Jobs at Djinni

About SlotCatalog
 

SlotCatalog is a leading intelligence and data platform in the online casino industry. We serve both players and industry stakeholders by tracking slot games, providing performance insights, and managing large-scale structured data. The business is profitable and growing, with strong traction across both SEO and direct industry relationships. We are now expanding into regulated markets, direct media sales, and AI-powered tools. 
 

What We’re Looking For 

We are looking for a Senior PHP Developer who thinks in terms of architecture, ownership, and real production impact, not just task execution.
 

Role Overview

This role requires architecture-level thinking, responsibility for production systems, and the ability to make technical decisions that directly influence the product and business outcomes. 

You will work closely with Product, DevOps, and Data teams, taking ownership of backend services end-to-end: from design and implementation to release, monitoring, and long-term stability.

What You Will Do

• Design and evolve SlotCatalog’s PHP backend running in real production
• Own features and services end-to-end, including releases and post-release stability
• Make and defend technical and architectural decisions
• Translate business goals into scalable and maintainable technical solutions together with Product
• Improve system performance, reliability, and long-term maintainability
• Confidently read, debug, refactor, and modernize existing code
• Participate in deployments, incident handling, and production troubleshooting
• Contribute to architectural standards and best practices

Requirements

• 5+ years of PHP experience in production environments
• Strong knowledge of PHP 8+, OOP, SOLID principles, and design patterns
• Proven experience with Laravel and/or Symfony in large codebases
• Deep understanding of PostgreSQL / MySQL and relational data modeling
• Experience designing and maintaining REST APIs under real traffic
• Confident use of Git, code reviews, and responsibility for merged code
• Experience working with:
  • Linux environments
  • Docker
  • CI/CD pipelines
  • Practicable usage of admin panels builder filament (v.5)
• Ability to diagnose and resolve production issues under pressure

• English C1-C2 is a must

   

Strong Advantage

•  Experience with SEO-sensitive websites
•  Experience with CMS/admin platforms
•  Experience with high-traffic content or affiliate websites
•  Experience improving old systems without full rewrites

Ownership & Product Mindset

You are a good fit if you:

• Think in terms of outcomes, not just tasks
• Challenge requirements when they are unclear, risky, or inefficient
• Understand how technical decisions impact performance, SEO, data quality, and business metrics
• Are comfortable being fully accountable for what goes to production
• Care about system behavior after release, not only about implementation

Not a Fit If

• You need extremely detailed step-by-step tickets
• You avoid legacy or complex code
• You have never owned features after release
• You are not interested in production stability and real user impact

What We Offer
 

🎯 Autonomy & Impact
Take ownership of your projects and partnerships — your ideas will directly influence our global growth.

🏡 Remote & Flexible
Work from anywhere with a schedule that supports your productivity and work-life balance.

🌴 Time Off
Enjoy 28 paid vacation days plus an extra day off on your birthday.

🩺 Health & Recovery
Paid sick leave to support your well-being.

📚 Learning & Development
Access to English courses, internal knowledge resources, and professional development opportunities.

Balto Health is a growing U.S. healthcare and telehealth product that helps patients access medications, navigate insurance, receive lab-testing guidance, and get personalized care online.

We’re looking for a User acquisition manager to help grow our paid marketing channels and bring more qualified customers to Balto. 

Key Responsibilities

• Plan, launch, and scale ad campaigns on Facebook and Google (there will be an opportunity to work with other channels as well)
• Stay on top of Meta and Google healthcare (prescription drugs) ad policies; 
• Track performance and look for ways to improve CPA and lead quality
• Do competitor research to find new ad ideas, creative angles, hooks, offers, and channels to test
• Create clear tasks and briefs for our designer and creative marketing specialist 
• Work on new ad concepts
• Analyze campaign data and share clear recommendations
• Proactively identify growth opportunities and performance issues.

Requirements

• 3+ years of hands-on experience managing Meta Ads (Facebook) and Google Ads campaigns
• Strong expertise in campaign scaling, audience testing, creative testing, and performance optimization 
• English proficiency at a strong B2 level or higher, both written and spoken
• Comfortable working with numbers, reports, and performance metrics
• Able to write clearly and communicate results in a simple way
• Organized, proactive, and comfortable working in a fast-moving environment
•  Ownership mindset

Nice to Have

• Experience in healthcare, telehealth, insurance, pharmaceuticals, or another related industry.  
• Experience with other user acquisition channels (Tiktok, X(Twitter))

We are offering:

• Competitive compensation based on experience and skills.
• Remote work.
• Paid vacation of 20 working days per year.
• Work Schedule: 8 hours per day, 5 days a week.

Description

Join a global, cross-functional team building an enterprise insurance product with integrated e-billing functionality.

We are looking for an experienced Cloud Engineer to scale and secure our infrastructure. You will drive cloud automation across Azure and other clouds, writing clean Terraform, Python, and Bash code to streamline deployments, enhance system reliability, and automate day-to-day operations.

Requirements

Must have:

• Azure DevOps: strong working knowledge of ADO in an enterprise setting (pipelines, branching, PRs, projects, Terraform module development)
• Scripting: Terraform, Bash, Python, Azure/AWS CLI, PowerShell, YAML
• Azure advanced deployment and administration of PaaS and IaaS services
• Basic networking skills
• Containerization: EKS and/or AKS
• Design and architecture experience in a large enterprise environment

Nice to have:

• AWS Landing Zone Accelerator
• Backstage.io
• AI Foundry and/or AWS Bedrock

Job responsibilities

Design, build, and maintain scalable, highly available PaaS and IaaS infrastructure across Azure and other cloud environments in alignment with enterprise architectural standards.

Architect and maintain enterprise Azure DevOps (ADO) environments, including pipeline optimization, branching strategies, PR governance, and custom Terraform module development.

Develop, test, and deploy modular IaC configurations using Terraform, PowerShell, Bash, Python, and cloud CLIs to enforce multi-region consistency.

Manage, secure, and scale enterprise Kubernetes clusters across AKS nvironments.

Deploy, configure, and operate cloud AI services using Azure AI Foundry to support enterprise LLM integrations and GenAI workloads.

Manage core networking components, including VPC/VNet peering, subnets, routing, firewalls, load balancers, and hybrid connectivity solutions.

Support multi-account enterprise governance.

Establish monitoring, observability, and automated remediation patterns across hybrid cloud assets.

Universal Parallel is a technology-driven digital advertising company working at the intersection of media, AI, automation, and advanced AdTech infrastructure.

We help brands and agencies plan, activate, and optimize digital advertising campaigns across major platforms including YouTube, Meta, TikTok, and other digital channels.

Today, a significant part of our new business comes through partners and reseller relationships.

Our next commercial challenge is to build a stronger direct sales channel — creating our own relationships with agencies and advertisers and developing an additional, scalable source of new business.

We are looking for a Head of Sales to build this function from the ground up.

About the Role

This is a zero-to-one commercial role.

We are looking for a hands-on commercial leader who can start from a relatively blank page: understand our business, explore the market, determine where the strongest opportunities are, develop the sales strategy, build the pipeline, and personally turn opportunities into revenue.

You will have significant ownership over how Universal Parallel approaches direct sales.

This includes determining which markets and client segments to prioritize, developing our commercial proposition, building relationships with agencies and advertisers, creating the sales process, and personally leading strategic opportunities from first conversation through closing.

This is a player-coach role with a strong emphasis on “player.”

At this stage, success will come from personally building relationships and winning business — not from managing an existing sales organization.

Your Mission

Build Universal Parallel’s direct sales engine from the ground up and turn it into a predictable source of new clients and revenue alongside our existing partner and reseller channels.

You will help answer — and then execute against — the fundamental commercial questions:

• Who should Universal Parallel sell to?
• Which international markets have the strongest potential?
• Where should we prioritize agencies versus direct advertisers?
• Which verticals and client segments offer the strongest opportunity?
• What is our strongest commercial proposition?
• How should we position Universal Parallel against alternative solutions?
• Which acquisition channels generate the highest-quality opportunities?
• What should our sales process look like?
• What commercial infrastructure do we need in order to scale?

This role is about finding those answers through a combination of strategy, market feedback, experimentation, and hands-on selling.

What You’ll Do

Build the Sales Strategy

• Develop Universal Parallel’s direct sales strategy from the ground up.
• Analyze the business, existing client base, partner ecosystem, capabilities, and commercial model.
• Define and continuously refine ICPs.
• Identify priority markets, client segments, verticals, agencies, and target accounts.
• Determine where Universal Parallel has the strongest right to win.
• Develop go-to-market approaches for different client segments.
• Define commercial priorities based on market potential and actual sales feedback.

Explore & Validate the Market

• Test different markets, client segments, propositions, and acquisition approaches.
• Speak directly with agencies, advertisers, and industry stakeholders.
• Gather market intelligence and understand how potential clients perceive Universal Parallel’s proposition.
• Identify recurring client needs, commercial barriers, and buying triggers.
• Use actual market feedback and pipeline data to refine the sales strategy.
• Identify which sales motions have the strongest potential to scale.

Personally Drive New Business

• Build relationships with media agencies, direct advertisers, and relevant strategic partners.
• Develop relationships with senior decision-makers across Marketing, Media, Digital, Procurement, and agency leadership.
• Generate opportunities through targeted outbound activity, networking, referrals, industry relationships, and strategic account development.
• Personally open doors and create new commercial conversations.
• Build and maintain a high-quality pipeline of potential business.

Own the Full Sales Cycle

• Lead opportunities from initial contact through signed commercial agreement.
• Conduct discovery and understand client objectives, media challenges, budgets, buying cycles, and decision-making processes.
• Translate Universal Parallel’s capabilities into relevant commercial solutions.
• Develop and lead pitches and presentations.
• Work with internal teams to prepare proposals and commercial solutions.
• Handle objections and competitive positioning.
• Lead pricing and commercial negotiations.
• Maintain momentum throughout complex sales cycles.
• Close new business and generate revenue.

Develop the Commercial Proposition

• Translate Universal Parallel’s technology, media capabilities, expertise, and campaign results into clear commercial propositions.
• Identify which capabilities create the strongest differentiation in the market.
• Develop propositions for different types of agencies and advertisers.
• Work with Management and internal experts to build sales materials, case studies, pitches, and proof points.
• Continuously refine positioning based on client conversations and market feedback.

Build Sales Infrastructure

• Design the sales process from prospecting through qualification, discovery, pitching, proposal, negotiation, closing, and handover.
• Establish clear CRM standards and funnel stages.
• Define qualification criteria.
• Introduce structured pipeline management.
• Establish forecasting and sales reporting.
• Define relevant commercial KPIs.
• Build repeatable sales cadences and playbooks based on validated approaches.

The objective is not to introduce process for the sake of process, but to create enough structure to make sales measurable, predictable, and eventually scalable.

Cross-Functional Collaboration

• Work directly with Management on company growth strategy and commercial priorities.
• Collaborate with Growth Account Management, Account Management, AdOps, Finance, and other internal teams.
• Ensure commercial propositions are operationally deliverable and financially sustainable.
• Build a structured transition from new-business acquisition into client onboarding and delivery.
• Bring client and market feedback back into the company to influence positioning, services, and future commercial development.

What We’re Looking For

• 5+ years of experience in digital media, AdTech, MarTech, advertising, agency sales, or a closely related commercial environment.
• Proven track record of generating and closing new B2B business.
• Experience building pipeline rather than only managing an inherited portfolio.
• Strong understanding of the digital advertising ecosystem.
• Experience selling to media agencies and/or direct advertisers.
• Strong commercial and negotiation skills.
• Ability to personally prospect, open relationships, pitch, negotiate, and close.
• Experience managing complex B2B sales cycles.
• Confidence working directly with senior and C-level stakeholders.
• Strong presentation and storytelling skills.
• Experience with pipeline management, CRM, forecasting, and sales KPIs.
• Strategic thinking combined with strong hands-on execution.
• High degree of autonomy and ownership.
• Comfortable operating with ambiguity and testing hypotheses rather than waiting for a predefined playbook.
• Excellent English communication skills.

Strong Advantage

We would be particularly interested in candidates who:

• Have previously built a sales function, commercial channel, or market from an early stage.
• Have launched or developed a new geography or territory.
• Have experience selling digital advertising, AdTech, or media solutions.
• Have an established network of agency and/or advertiser decision-makers.
• Understand YouTube, Meta, TikTok, CTV, programmatic, contextual advertising, or the broader digital video ecosystem.
• Have experience selling internationally.
• Have worked in entrepreneurial, high-growth, or early-stage commercial environments.
• Can demonstrate not only sales leadership experience but also a strong personal track record of winning business.

Geography

We are deliberately not assigning this role to one predefined market.

One of the responsibilities of the Head of Sales will be to help determine where Universal Parallel has the strongest commercial opportunity.

We are open to exploring different international markets based on commercial potential, Universal Parallel’s capabilities, and the candidate’s existing expertise and network.

We value relevant market knowledge and relationships, but we do not expect the successful candidate to fit into a predetermined geographical sales strategy — helping us develop that strategy is part of the role.

What Success Looks Like

The primary outcome of this role is straightforward:

Universal Parallel develops a functioning direct sales channel that generates new clients and revenue independently of our existing reseller network.

Success will be measured through:

• New direct revenue generated.
• New clients won.
• Qualified pipeline created.
• Quality and scalability of identified markets and client segments.
• Pipeline coverage and conversion.
• Win rate.
• Average deal size.
• Sales cycle development.
• Forecast visibility and accuracy.
• Development of a validated direct sales strategy.
• Establishment of a repeatable sales process and commercial playbook.

First 6–12 Months

During the first stage, we expect the Head of Sales to:

• Deeply understand Universal Parallel’s business, products, services, clients, economics, and partner ecosystem.
• Analyze potential markets and commercial opportunities.
• Define and test initial ICP hypotheses.
• Explore different agencies, advertisers, verticals, and markets.
• Develop Universal Parallel’s direct sales positioning.
• Build the first structured direct pipeline.
• Personally initiate and develop strategic relationships.
• Run pitches and commercial negotiations.
• Close new direct business.
• Identify which markets, segments, propositions, and acquisition channels perform best.
• Establish CRM, forecasting, KPIs, and sales reporting.
• Create a repeatable sales playbook based on actual market validation.

From there, the role and commercial structure can evolve based on what proves successful.

This Role Is Probably Not for You If

You are primarily looking to manage an established sales team, inherit an existing client portfolio, or execute against a mature sales strategy.

There is no finished sales machine waiting for you here.

We are looking for someone who is energized by building one — combining commercial strategy with the willingness and ability to personally create pipeline and close business.

Why Universal Parallel?

This is an opportunity to build rather than inherit.

You will have significant influence over Universal Parallel’s commercial direction: which markets we enter, which clients we pursue, how we position ourselves, and how our direct sales channel develops.

You will work directly with company leadership while building relationships with agencies and leading brands across international markets.

For the right commercial leader, this is an opportunity to take ownership of a major new growth channel and shape how Universal Parallel approaches the next stage of its development.

Universal Parallel is a technology-driven digital advertising company working at the intersection of media, AI, automation, and advanced AdTech infrastructure.

We help brands and agencies plan, activate, and optimize digital advertising campaigns across major platforms including YouTube, Meta, TikTok, and other digital channels.

Today, a significant part of our new business comes through partners and reseller relationships. As we continue to grow, we want to build a stronger direct new-business channel and establish our own relationships with agencies and advertisers.

We are looking for a hands-on Business Development Manager who can help us explore the market, identify where the strongest commercial opportunities are, build relationships with potential clients, and turn those relationships into real business.

About the Role

This is not a role where you will receive a fixed list of accounts and an established sales playbook to execute.

Our direct sales function is at an early stage, which means you will have the opportunity to help shape how Universal Parallel approaches new business.

You will work closely with Management to explore potential markets and client segments, identify target accounts, test different approaches, build a qualified pipeline, and develop new relationships with agencies and direct advertisers.

We are deliberately keeping the market scope broad.

Rather than assigning one predefined geography or vertical, we want to understand where Universal Parallel has the strongest opportunity to win. This could include agencies, direct advertisers, specific industries, or different international markets.

We are looking for someone who is comfortable exploring those opportunities rather than operating within a completely predefined sales structure.

Your Mission

Help Universal Parallel build a sustainable direct new-business pipeline and identify where we have the strongest opportunity to grow.

You will help us answer questions such as:

• Which markets offer the strongest commercial potential?
• Which agencies and advertisers should we be speaking to?
• Which client segments respond best to our proposition?
• Which acquisition channels generate the strongest opportunities?
• What messaging and commercial propositions resonate with potential clients?

Most importantly, you will turn this market exploration into conversations, qualified opportunities, and new business.

What You’ll Do

New Business Development

• Identify and develop new business opportunities with media agencies and direct advertisers.
• Research potential markets, companies, brands, and relevant decision-makers.
• Build and maintain structured target-account and prospect lists.
• Proactively approach potential clients through LinkedIn, email, networking, referrals, industry connections, and other relevant channels.
• Generate meetings and start commercial conversations with relevant decision-makers.
• Develop relationships with Marketing, Media, Digital, Procurement, and agency stakeholders.

Market Exploration

• Explore different markets, client segments, and verticals to identify where Universal Parallel has the strongest commercial potential.
• Test different approaches to prospecting and client acquisition.
• Gather feedback from the market and identify recurring client needs and challenges.
• Help Management understand which segments, propositions, and channels have the strongest potential to scale.
• Bring market intelligence and prospect feedback back into the business.

Lead Qualification & Discovery

• Conduct initial discovery conversations with potential clients.
• Understand their media activity, objectives, challenges, budgets, buying process, and potential needs.
• Identify where Universal Parallel’s capabilities can create value.
• Qualify opportunities based on commercial potential and fit.
• Maintain clear next steps for every active opportunity.

Pitching & Commercial Development

• Present Universal Parallel and our capabilities to potential clients.
• Adapt the commercial story to different client types and business needs.
• Work with Management and internal teams to develop relevant proposals and solutions.
• Participate in pitches, follow-ups, and commercial discussions.
• Support opportunities through the sales cycle and contribute to converting them into new business.

Pipeline & CRM Management

• Build and maintain a transparent new-business pipeline.
• Keep CRM data, prospect status, meetings, opportunities, and next steps up to date.
• Maintain disciplined follow-up across active prospects.
• Track pipeline development and conversion.
• Provide regular visibility into activity, opportunities, market feedback, and expected next steps.

Cross-Functional Collaboration

• Work closely with Management on new-business priorities and commercial opportunities.
• Collaborate with Growth Account Management, Account Management, AdOps, and other internal teams when preparing pitches and proposals.
• Ensure potential client needs are clearly communicated internally.
• Help turn Universal Parallel’s expertise, technology, campaign results, and case studies into compelling sales conversations.

What We’re Looking For

• 3+ years of experience in business development, sales, partnerships, account development, or a similar commercial role.
• Experience in digital advertising, media, AdTech, MarTech, SaaS, or an agency environment is highly preferred.
• Proven ability to generate new business opportunities rather than only manage existing accounts.
• Comfortable with outbound prospecting and starting relationships from scratch.
• Strong research and prospecting skills.
• Ability to identify relevant decision-makers and navigate organizations.
• Confidence conducting discovery meetings and presenting to potential clients.
• Commercial mindset and ability to identify business opportunities.
• Strong written and verbal communication skills.
• Structured approach to pipeline management and follow-ups.
• Comfortable working with targets and measurable KPIs.
• High level of autonomy, ownership, and self-organization.
• Comfortable operating in an environment where not everything has already been defined.
• Strong English communication skills.

Strong Advantage

• Existing network within media agencies, advertisers, or the digital advertising ecosystem.
• Experience selling digital advertising, media, AdTech, or marketing technology.
• Understanding of YouTube, Meta, TikTok, programmatic advertising, CTV, or digital video.
• Experience developing new markets or territories.
• Experience selling internationally.
• Experience working in an early-stage or rapidly evolving commercial environment.

Geography

This is an international business development role.

We are not limiting the position to one predefined sales market. We are interested in exploring opportunities across international markets and will consider the candidate’s existing network, market knowledge, and experience when defining the initial focus.

How Success Will Be Measured

Success in this role will be measured through:

• Qualified new-business opportunities generated.
• Relevant client meetings created.
• Qualified pipeline value.
• New clients and revenue generated.
• Conversion of outbound activity into meaningful commercial conversations.
• Quality and consistency of pipeline management.
• Ability to identify promising markets, client segments, and acquisition approaches.
• Contribution to building a repeatable direct new-business channel for Universal Parallel.

Why Universal Parallel?

This is an opportunity to join at the stage where our direct new-business approach is still being shaped.

You will not simply execute an established sales playbook — you will have the opportunity to influence it.

You will work directly with Management, explore international opportunities, build relationships with agencies and brands, and help Universal Parallel determine where and how our direct sales channel can scale.

For someone who combines curiosity, commercial drive, and hands-on execution, this role offers significant ownership and room to grow.

Universal Parallel is looking for an experienced Head of Marketing Operations/ Digital Director to take full ownership of the financial performance, operational efficiency, and strategic growth of our Digital Department across Awareness and Performance.

This is a senior leadership role for someone who can combine strong digital media expertise with commercial thinking, financial ownership, client leadership, and operational excellence.

About the Role

As Digital Director, you will be responsible for the overall performance of the Digital Department — from P&L and campaign profitability to media delivery, client retention, upselling, team management, and process optimization.

Your key objective will be to ensure that client media plans are delivered effectively and in full, agreed KPIs are achieved, target margins are maintained, and existing client relationships are developed into sustainable growth opportunities.

You will work directly with the CEO and collaborate closely with Account Management, Sales/Business Development, AdOps, Performance, Operations, and other internal teams.

Key Responsibilities

Financial Performance & P&L

• Own the P&L of the Digital Department and ensure sustainable profitability.
• Monitor campaign and department-level margins and identify opportunities to improve financial performance.
• Control direct costs and resource allocation across the department.
• Ensure campaigns operate within agreed profitability targets.
• Provide the CEO with monthly P&L reporting, performance analysis, and strategic recommendations.

Media Delivery & Campaign Performance

• Ensure full and effective utilization of client media budgets.
• Oversee the execution of client media plans across Awareness and Performance campaigns.
• Monitor key media KPIs and benchmarks, including Reach, Frequency, CPM, CPV, CPA, and other campaign-specific metrics.
• Initiate campaign adjustments, optimization, pauses, or relaunches when performance deviates from agreed benchmarks or negatively impacts profitability.
• Ensure consistent delivery quality across the entire client portfolio.

Quality Assurance & Operational Excellence

• Build and maintain a structured Quality Assurance framework for digital campaigns.
• Establish clear standards for campaign setup, execution, monitoring, optimization, and reporting.
• Conduct regular campaign and process retrospectives and translate findings into operational improvements.
• Identify operational bottlenecks and reduce manual work through process optimization and automation.
• Participate in the development and implementation of SkyFlow as the company’s unified operational system.

Client Growth & Retention

• Develop growth plans for existing clients and identify opportunities for upselling and cross-selling.
• Participate in strategic client meetings and complex negotiations.
• Support Account Managers in managing key enterprise accounts and resolving escalations.
• Maintain strong client relationships and contribute to high retention and satisfaction levels.
• Build structured development plans for key accounts.

New Business & Strategic Partnerships

• Participate in new business meetings together with the Sales/BD team.
• Contribute digital and media expertise to proposals and presales strategies.
• Review and approve strategic client proposals before presentation.
• Support the monetization and development of strategic partnerships.
• Build temporary cross-functional teams for complex pitches and new business opportunities.

Team Leadership

• Lead and develop the Digital team across Awareness and Performance.
• Ensure effective allocation of clients and projects based on team capacity and expertise.
• Participate in hiring, performance management, team development, and organizational planning.
• Establish clear performance standards and accountability across the department.
• Foster an ownership-driven, data-driven culture focused on business and client outcomes.

What We’re Looking For

• 5+ years of experience in digital marketing, including leadership experience in roles such as Digital Director, Head of Digital, Client Service Director, Head of Account, CMO, or similar. Previous experience working in a digital or media agency environment is highly desirable and will be considered a strong advantage.
• Proven experience working with Enterprise-level brands and complex client accounts.
• Strong understanding of digital advertising across platforms such as Google Ads, YouTube, DV360, Meta, TikTok, and performance marketing channels.
• Strong financial acumen with hands-on experience managing departmental P&L, campaign profitability, budgets, and financial planning.
• Strong understanding of media planning, campaign delivery, and metrics such as Reach, Frequency, CPM, CPV, CPA, and related KPIs.
• Proven experience in strategic account management, complex negotiations, stakeholder management, client retention, and upselling.
• Experience building and optimizing internal operational processes.
• Strong analytical skills and experience working with management reporting, dashboards, and large datasets.
• Experience implementing automation or operational systems would be a strong advantage.
• Strong leadership skills, ownership mindset, adaptability, and ability to make decisions in a fast-changing environment.
• Upper-Intermediate to Advanced English.
• Degree in Marketing, Economics, Business Administration, or a related field; MBA is a plus.

What You Will Own

This is not purely a media-management role.

The Digital Director will have significant decision-making authority across campaign strategy, quality standards, team management, client allocation, operational processes, presales strategy, and crisis management.

You will have direct visibility into the financial performance of the department and the authority to initiate changes required to improve delivery, profitability, and client outcomes.

Major decisions related to senior-level hiring, pricing, strategic contracts, significant team expansion, and projects below target profitability will be made together with the CEO.

Why Join Universal Parallel

This role offers the opportunity to directly influence how the Digital Department operates and grows.

You will have ownership not only over campaign delivery, but also over financial performance, client growth, team development, operational standards, and automation — with the mandate to build a scalable digital operation capable of supporting Universal Parallel’s continued growth across multiple markets.

About the company

A US telehealth company selling GLP-1 weight loss treatments, longevity peptides, and women’s health products. Fully licensed and LegitScript-certified. They have their own creative team, developers, and analytics — they just need someone to run the ads.

What you’ll do

• Run paid ads for the US market: Meta first, then Google, TikTok, Pinterest, and Reddit.
• Keep accounts safe: know Meta’s rules for health products, avoid bans, keep creatives and tracking compliant.
• Watch the funnel in Mixpanel and Hyros, find where people drop off, and fix it.
• Test new creatives every week with the in-house team.
• Review results with the founders every week.
• Grow the account from 5–10 orders a day to 50.

What you need

• 3+ years of hands-on media buying for the US.
• Experience with health products: telehealth, weight loss, supplements, or similar.
• Strong Meta Ads skills, plus at least two of Google, TikTok, Pinterest, Reddit.
• Comfortable with attribution tools like Hyros or Mixpanel.
• English for weekly calls with the founders.
• A few hours of overlap with US Central time.

Nice to have

• Subscription products with quiz or intake funnels.
• Experience with pay-for-performance deals.

What we offer

• Remote.
• Part-time to start, full-time as spend grows.
• Work directly with the founders.
• Base pay plus a share of results is on the table.

WHO WE ARE:

Volpis is a company of ambitious professionals providing Web & Mobile App Design and Development services for more than 10 years. Regularly listed in the Top IT Outsourcing Companies and Top Custom Software Development Companies on Clutch.co. Being a full-service company, we provide expertise in all phases of the software development life cycle. We’ve successfully covered more than 100 products all over the world. Together, we’ve created a dynamic, fun, inspiring environment where we can be ourselves and grow each day.

Our client is a well-established American company with a long history in navigation. Today it builds connected technology for the transportation industry: truck GPS tablets, mobile apps, and a web platform for fleet management. The products help professional drivers and businesses move more safely and efficiently.

We are looking for a strong AQA Engineer to join an experienced team working on the client’s product ecosystem. The work covers the web platform and related services, with real-world impact on thousands of drivers and fleets across North America.

Required experience/skills:

• 4+ years of experience in software QA, including strong hands-on experience testing mobile applications on iOS and Android;
• Strong experience with both manual and automated testing;
• Hands-on experience designing, writing, and maintaining automated tests;
• Strong knowledge of Python and experience with pytest or similar test automation frameworks;
• Ability to write clean, maintainable, and reusable automation code;
• Good understanding of OOP principles and basic software architecture concepts;
• Strong understanding of test design techniques, exploratory testing, regression testing, and risk-based testing;
• Experience defining test strategy and selecting appropriate test coverage based on product and release risks;
• Strong REST API testing experience, including authentication, request/response validation, error handling, and API workflows;
• Good understanding of HTTP methods, status codes, headers, JSON, authentication mechanisms, and client-server architecture;
• Ability to investigate issues using logs, API responses, browser/device debugging tools, and backend information;
• Experience integrating automated tests into CI/CD pipelines;
• Experience with Git and modern CI/CD systems such as GitHub Actions, GitLab CI, Jenkins, or Azure DevOps;
• Experience working with test management systems such as TestRail, Xray, Zephyr, or similar;
• Experience with Jira or similar issue-tracking systems;
• Ability to review requirements, identify gaps and ambiguities, challenge assumptions, and define test scenarios before development is completed;
• Strong understanding of release testing, regression strategy, defect prioritization, and production risk assessment;
• Ability to communicate quality risks clearly to developers, product managers, and customers;
• Experience using AI tools to support requirements analysis, test design, debugging, automation, or QA process improvement;
• Strong analytical and problem-solving skills;
• Upper-Intermediate or higher English

Leadership & Process Ownership:

• Experience improving or establishing QA processes at a project or company level;
• Ability to define minimum QA standards across multiple projects or teams;
• Experience mentoring QA engineers and reviewing their testing approach;
• Ability to evaluate QA effectiveness across multiple projects without micromanaging individual testers;
• Experience performing root-cause analysis for production defects and improving processes based on findings;
• Ability to balance quality, business priorities, delivery timelines, and release risks;
• Experience collaborating with engineering and product teams to introduce shift-left testing practices.

Would be a plus:

• Experience with mobile UI automation;
• Experience with Playwright, Selenium, Appium, XCTest, Espresso, or similar tools;
• Knowledge of Docker;
• Experience testing applications with complex backend integrations;
• Experience with performance, security, or accessibility testing;
• Experience setting up automation infrastructure from scratch.

Responsibilities:

• Analyze product requirements and identify risks, gaps, ambiguities, and edge cases before development is completed;
• Define appropriate test strategy and coverage for new features and releases;
• Perform functional, exploratory, regression, integration, API, and mobile testing;
• Create and maintain meaningful test documentation, including test cases, checklists, test plans, and regression suites where appropriate;
• Design, implement, and maintain automated tests;
• Integrate automated tests into CI/CD pipelines and monitor their reliability;
• Investigate defects using logs, APIs, application behavior, and backend data;
• Report defects with clear reproduction steps, impact, severity, and supporting evidence;
• Perform root-cause analysis of escaped production defects and propose process improvements;
• Assess release quality and clearly communicate risks to the team;
• Collaborate closely with developers, product managers, business analysts, and customers;
• Continuously improve QA practices, tooling, automation coverage, and testing efficiency;
• Depending on seniority, mentor QA engineers and contribute to establishing consistent QA standards across projects.

Your Benefits:

• 15 days paid vacation + 5 public holidays;
• 7 days 100% paid sick leaves;
• Sport and health compensation;
• Flexible working hours;
• Corporate training (internal and external);
• IT Cluster membership;
• Personal Birthday and anniversary gifts;
• Сorporate parties and team-buildings;
• Company legal and accounting support.

INTERVIEW PROCESS: HR Interview, Technical Interview, Сustomer Interview.

About TEKTELIC

TEKTELIC is a global leader in LoRaWAN IoT, providing carrier-grade gateways, sensors, and end‑to‑end solutions for Industrial, Building Automation, Asset Tracking, and Medical IoT. Our solutions help enterprises reduce costs, improve operations, and scale reliably across thousands of connected devices.
 

About the Role

You will act as a key point of coordination between customers, the EU sales team, and internal operations.
 

This is a fast-paced, detail-oriented role with significant ownership, ideal for someone building a career in operations within a product-based organization.

Working hours: 9 AM-6 PM Kyiv time.
 

Key Responsibilities

Sales & Order Management

• Serve as a primary point of contact for customer inquiries related to quotes, orders, and delivery status
• Follow up on submitted RFQs/RFPs 
• Maintain and update customer records including contact, shipping, and billing information
   

Logistics & Delivery Execution

• Communicate delivery schedules and status updates to customers and internal stakeholders
   

Operations Coordination

• Coordinate with production, supply chain, and finance teams to ensure timely order fulfillment

  
   

Required Skills & Qualifications

• 2+ years of experience in Customer Support 
• Experience supporting B2B customers, ideally across European markets
• Strong communication and customer service skills
• High attention to detail and accuracy
• Ability to manage multiple priorities in a fast-paced environment
• Structured, problem-solving mindset
• Upper-Intermediate English
  
   

What We’re Looking For

• A strong communicator who effectively bridges customers, sales, and operations
• A proactive, hands-on coordinator 
• Someone comfortable balancing commercial support with operational execution
• A reliable team player aligned with EU working hours and able to support a distributed team
   

What we offer

• Ongoing opportunities and personal growth in a leading Canadian company
• Competitive compensation + PE accounting support
• Well-being program (250 USD per year)
• Opportunity for career growth in the dynamic field of IoT
• Collaborative and innovative work environment
• Paid Time-off and an additional week off during Christmas Holidays
• Flexible work setup (Kyiv office or remote in Kyiv) and a supportive, international team
• Health insurance
• Engaging social events

We are currently looking for a Brand Manager to develop and scale our Forex vertical across international markets.

We are particularly interested in professionals with experience in affiliate networks, working with brokers, brand partnerships, and traffic monetization.
 

Responsibilities

• Develop and manage relationships with brands, brokers, and affiliate partners.
• Support the growth and scaling of the Forex vertical across Tier 1–2 markets.
• Identify opportunities for new partnerships and brand development.
• Collaborate with internal media buying and affiliate teams.
• Work with traffic monetization models, including CPA, CPL, and CRG.
• Monitor partner performance, traffic quality, and business results.
• Negotiate partnership terms and identify opportunities for business growth.
   

Requirements

• Proven experience as a Brand Manager or relevant experience in affiliate marketing / business development.
• Experience in Forex, CFD, Crypto, or related financial verticals.
• Understanding of affiliate networks, traffic acquisition, and monetization models.
• Experience working with international GEOs, preferably Tier 1–2.
• Portfolio of brands, partnerships, or successful projects.
• Fluent Ukrainian or Russian — mandatory.
• English communication skills.
• Strong negotiation and relationship management skills.
   

What We Offer

• Fully remote, full-time position.
• Competitive compensation, discussed individually.
• Support from an experienced international team.
• Opportunity to develop and scale projects in the Forex vertical.
• Performance-driven environment with an in-house media buying team.
   

Interested?

Send your CV and share examples of brands, partnerships, or projects you've worked with.

Team Summary

Our AI QA team provides end-to-end testing solutions of complex AI-driven features, hardware sensors supporting AI functionality, and large-scale cloud and embedded systems. We bring proven experience in both hardware and software product development, with a strong focus on motion detection technologies.

We specialize in manual testing across integration, E2E, and acceptance levels, ensuring comprehensive test coverage, continuous product state monitoring, and stable product releases.

The team contributes to the development of AI features and embedded systems.

Job Summary

We are looking for a QA Engineer with experience in software testing, preferably with exposure to embedded systems. In this role, you will be responsible for executing manual tests as well as executing our existing automation.

Responsibilities and Duties

• Conduct confirmation testing
• Estimate own tasks
• Execute existing test cases
• Report test results for assigned activities
• Report bugs according to the template

Qualifications and Skills

• 1+ year of experience in manual testing
• Strong knowledge of testing methodologies, test documentation practices, and test design techniques
• Understanding and hands-on experience with embedded systems testing
• Experience with bug tracking systems
• Basic experience with UNIX/Linux, including CLI navigation and use of regular expressions
• Basic experience with databases and SQL
• Basic experience with API testing using Postman/Charles (send requests, validate responses)
• Basic experience with Python (execute and maintain existing automation scripts)
• Basic experience in mobile testing
• Good written and spoken English
• Ability to work from our lab location in Gdansk

Nice to have

• Understanding AWS services
• Understanding CI tools (Jenkins)
• Basic experience with Raspberry Pi
• Basic knowledge in computer vision and machine learning

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture, and an individual approach to each team member
• Competitive salary packages with performance-based annual reviews
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company
• Employment via Contract of Employment (UoP) in complete alignment with Polish Labour Law
• Guaranteed paid vacation, public holidays, and medical leaves as per statutory regulations
• Continuous growth and development opportunities through internal knowledge hubs, corporate courses, and free English classes
• Comprehensive private medical insurance to supplement your standard NFZ coverage.

Our AI QA team provides end-to-end testing solutions of complex AI-driven features, hardware sensors supporting AI functionality, and large-scale cloud and embedded systems. We bring proven experience in both hardware and software product development, with a strong focus on motion detection technologies.
We specialize in building and executing multi-layered automation frameworks across integration, system, and acceptance levels, ensuring comprehensive test coverage, continuous product state monitoring, and stable product releases.
The team contributes to the development of AI features and embedded systems.

We are looking for a QA Engineer with solid experience in software testing, preferably with exposure to embedded systems. In this role, you will be responsible for executing manual tests as well as expanding and maintaining our existing automation coverage.

Responsibilities:

Define requirements for test environments, data, resources, and tools
Create and maintain traceability matrices
Provide accurate high-level and detailed estimations for assigned activities and features
Develop and execute Test Plans in line with standards
Ensure automated test coverage (execution, analysis, reporting)
Contribute to the development and expansion of the existing Python test framework
Interpret and apply product and project metrics (technical and quality)
Prepare Test Summary Reports for features and programs in line with standards
Monitor, update, and implement new QA approaches based on standards (ISO/IEC/IEEE, ISTQB, RST)
Apply Quality Management principles (Planning, Assurance, Control, Continuous Improvement)

Skills:

5+ years of experience as a QA engineer

Basic knowledge in computer vision and machine learning
Understanding and hands-on experience with embedded systems testing
Good Automation skills with Python
Hands-on experience in UNIX/Linux, including CLI navigation and use of regular expressions
Experience with databases and SQL
Experience with CI tools (Jenkins)

Nice to have:

Basic experience with Raspberry Pi
Hands-on experience in Bash scripting
Familiarity with AWS services
Practical experience with API testing (CRUD operations, debugging with Postman or similar tools)
Experience in mobile testing
ISTQB Certification

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture, and an individual approach to each team member
• Competitive salary packages with performance-based annual reviews
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company
• Employment via Contract of Employment (UoP) in complete alignment with Polish Labour Law
• Guaranteed paid vacation, public holidays, and medical leaves as per statutory regulations
• Continuous growth and development opportunities through internal knowledge hubs, corporate courses, and free English classes
• Comprehensive private medical insurance to supplement your standard NFZ coverage.

Team Summary

Our AI QA team provides end-to-end testing solutions of complex AI-driven features, hardware sensors supporting AI functionality, and large-scale cloud and embedded systems. We bring proven experience in both hardware and software product development, with a strong focus on motion detection technologies.

We specialize in building and executing multi-layered automation frameworks across integration, system, and acceptance levels, ensuring comprehensive test coverage, continuous product state monitoring, and stable product releases.

The team contributes to the development of AI features and embedded systems.

Job Summary

We are looking for a QA Engineer with solid experience in software testing, preferably with exposure to embedded systems. In this role, you will be responsible for executing manual tests as well as expanding and maintaining our existing automation coverage.

Responsibilities and Duties

• Define requirements for test environments, data, resources, and tools
• Create and maintain traceability matrices
• Provide accurate high-level and detailed estimations for assigned activities and features
• Develop and execute Test Plans in line with standards
• Ensure automated test coverage (execution, analysis, reporting)
• Contribute to the development and expansion of the existing Python test framework
• Interpret and apply product and project metrics (technical and quality)
• Prepare Test Summary Reports for features and programs in line with standards
• Monitor, update, and implement new QA approaches based on standards (ISO/IEC/IEEE, ISTQB, RST)
• Apply Quality Management principles (Planning, Assurance, Control, Continuous Improvement)

Qualifications and Skills

• 3+ years of experience in manual testing
• Strong knowledge of testing methodologies and test documentation practices
• Experience with bug tracking systems
• Hands-on experience in UNIX/Linux, including CLI navigation and use of regular expressions
• Experience with databases and SQL
• Experience with CI tools (Jenkins)
• Practical experience with API testing (CRUD operations, debugging with Postman or similar tools)
• Basic automation skills with Python (ability to read a script or maintain simple tests)
• Good written and spoken English
• Ability to work from our lab location in Kyiv

Nice to have

• Understanding and hands-on experience with embedded systems testing
• Familiarity with AWS services
• Basic experience with Raspberry Pi
• Hands-on experience in Bash scripting
• Basic knowledge in computer vision and machine learning
• Experience in mobile testing

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture and an individual approach to each team member.
• Competitive compensation and perks. Annual performance review.
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company.
• Gig-contract.
• 21 paid vacation days per year, paid public holidays according to the Ukrainian legislation.
• Development opportunities like corporate courses, knowledge hubs, and free English classes as well as educational leaves.
• Medical insurance is provided from day one. Sick leaves and medical leaves are available.
• Remote working mode is available within Ukraine only.
• Free meals, fruits, and snacks when working in the office.

Project Description

We are looking for a sys admin to cover the US time zone. Working hours: 7 PM to 3 AM.

IT System Administrator (Evening/Night Shift, 7 PM – 3 AM)

Responsibilities:

• Device fleet: set up, maintain, and update Windows and macOS machines; handle hardware onboarding and offboarding.
• User access: manage accounts, roles, permissions, MFA, password resets, and access revocation for departing employees.
• Endpoint updates and security: apply OS and software patches, manage antivirus/EDR, enforce disk encryption (BitLocker, FileVault) and security policies.
• Monitoring: track device health and corporate services, respond to alerts during the shift.
• Backups: oversee backups of workstations and user data.
• Troubleshooting: resolve OS, software, network, VPN, and peripheral issues.
• Developer support: configure local environments (Docker, SDKs, IDEs, repository and VPN access), perform initial diagnosis of deployment issues, and escalate to DevOps.
• Tickets: handle user requests, maintain documentation, and prepare shift handovers.

Requirements:

• Experience: 2+ years as an IT Administrator or IT Support (L2).
• Windows: solid administration of Windows 10/11, including Group Policy.
• macOS: hands-on experience supporting and configuring macOS.
• MDM: Microsoft Intune, Jamf, Kandji, or similar.
• Identity and access: Entra ID (Azure AD) or Active Directory, Google Workspace or Microsoft 365, SSO (Okta, JumpCloud, etc.).
• Networking (end-user level): DNS, DHCP, Wi-Fi, VPN.
• Scripting: PowerShell and Bash/zsh for automating routine tasks.
• Ticketing systems: Jira Service Management, Freshservice, or similar.
• English: B1 or higher.

Nice to Have

• Basic understanding of Docker, Git, and CI/CD to communicate effectively with DevOps.
• Experience with EDR tools (CrowdStrike, SentinelOne, Defender for Endpoint).
• Basic AWS or Azure knowledge at the access-management level (IAM).
• Certifications: Microsoft (MD-102), Apple (ACSP), CompTIA A+/Network+.
• Familiarity with ITIL processes.

Night Shift Specifics

• Autonomy: able to resolve user issues independently without team backup.
• Escalation: clear judgment on when to escalate an incident to on-call DevOps and when it can wait until morning.
• Communication: clear written handovers for the day shift.
• Schedule: consistent availability from 7 PM to 3 AM with an agreed rotation of days off.

POSITION OVERVIEW

As a System Analyst on the Fintech Core project, you will define technical architecture, system specifications, and integration designs for a white-label modular fintech platform that enables rapid creation of digital banking and payment products.

The platform provides a complete technology stack including general ledger, middleware, mobile/web applications, and extensive third-party integrations for KYC, payments, card issuance, and compliance. You’ll work closely with Business Analysts, Solution Architects, and Engineering teams to translate business requirements into detailed technical specifications, design robust system architectures, and ensure seamless integration across microservices while maintaining regulatory compliance and enterprise-grade security.

This role offers hands-on experience designing financial systems at scale, with exposure to payment processing, card networks, digital wallets, cross-border transactions, and regulatory compliance frameworks serving multiple fintech implementations globally.

General project description 

Fintech Core is a white-label modular fintech solution designed for rapid creation and launch of digital banking and payment products. It provides a comprehensive, turnkey platform that enables businesses to build neobanks, digital wallets, payment systems, and other fintech products within 3 months rather than years. The solution includes a complete technology stack: a robust general ledger platform, middleware layer, customizable frontend applications for iOS/Android/Web, and extensive third-party integrations for KYC, payments, card issuance, and compliance. Unlike traditional SaaS offerings, Fintech Core provides full access to source code, eliminating vendor lock-in and enabling deep customization.

The platform is built on a microservices architecture with modular components that can be independently scaled and customized. It supports multi-currency operations, cross-border payments, card issuing, account management, transaction processing, compliance monitoring, and back-office orchestration. The solution is PCI & DSS compliant and designed to meet regulatory requirements across multiple jurisdictions.

Project stage: Active development and continuous enhancement. The platform is mature with multiple successful implementations but undergoes constant evolution to incorporate new regulatory requirements, payment integrations, and fintech capabilities. Quality, scalability, and compliance are paramount priorities.

The size and the structure of the team Cross-functional team including Product Owners, Business Analysts, System Analysts, Frontend/Backend Developers, QA Engineers, DevOps, Security Specialists, and Compliance Consultants. The team operates in an Agile environment with close collaboration between technical and business functions.

YOUR BACKGROUND

Technical Skills 

• 4+ years of experience as a System Analyst, Technical Analyst, or similar role in fintech or banking domains 
• Strong understanding of financial systems architecture including general ledgers, payment processing, and account management 
• Experience with microservices architecture, API design, and distributed systems 
• Proficiency in creating technical documentation: system design documents, data flow diagrams, sequence diagrams, ER diagrams 
• Knowledge of database design and data modeling for transactional systems 
• Understanding of integration patterns, message queues, and event-driven architectures 
• Familiarity with payment systems standards (ISO 20022, SWIFT, SEPA, card schemes) 
• Experience with API specifications (REST, OpenAPI/Swagger, webhooks) 
• Understanding of cloud infrastructure and deployment architectures (AWS, Azure, GCP) 
• Knowledge of authentication and authorization mechanisms (OAuth, JWT, API keys)

Domain Knowledge 

• Understanding of core banking concepts: accounts, transactions, balances, ledgers, reconciliation 
• Knowledge of payment flows: domestic/international transfers, card payments, digital wallets 
• Familiarity with KYC/AML processes and regulatory compliance requirements 
• Understanding of financial data security standards (PCI DSS, GDPR) 
• Experience with fintech product features: onboarding, card issuing, FX, acquiring

Analytical & Documentation Skills 

• Excellent analytical thinking and problem-solving abilities 
• Strong technical writing skills with attention to detail 
• Ability to translate complex business requirements into technical specifications 
• Experience with UML, BPMN, or similar modeling notations 
• Proficiency with documentation tools (Confluence, Notion, or similar) 
• Experience with requirements management and traceability

English level - Upper-Intermediate.

Skills that will be a plus:

• Experience with white-label or multi-tenant system architectures
• Knowledge of blockchain and cryptocurrency integrations
• Familiarity with regulatory frameworks (PSD2, Open Banking, MiFID)
• Experience with performance testing and system optimization
• Understanding of DevOps practices and CI/CD pipelines
• Previous experience with modular platform architecture
• Knowledge of financial compliance and audit requirements
• Experience with data migration and system integration projects

RESPONSIBILITIES

• Analyze and document system requirements for platform modules including payments, card issuance, digital wallets, accounts, ledger management, and compliance systems
• Translate business requirements into detailed technical specifications, API contracts, database schemas, and integration architectures
• Design data models, entity relationships, and data flow diagrams for transactional and financial systems with appropriate normalization and performance considerations
• Define integration patterns and technical specifications for connecting with payment processors, KYC/AML providers, card issuers, and open banking platforms
• Document system behaviors using sequence diagrams, component diagrams, deployment architectures, and API specifications (OpenAPI/Swagger)
• Collaborate with Solution Architects to ensure system designs align with microservices architecture patterns, scalability requirements, and technical best practices
• Define non-functional requirements including performance benchmarks, security controls, data retention policies, and audit trail specifications
• Facilitate technical design workshops with Engineering teams to review system specifications, validate implementation approaches, and identify technical risks
• Create comprehensive system documentation in Confluence covering technical flows, component interactions, message formats, and infrastructure requirements
• Support QA teams by defining system integration test scenarios, technical acceptance criteria, and end-to-end testing strategies
• Analyze system performance bottlenecks and propose optimization solutions for high-throughput financial transaction processing
• Ensure all technical specifications maintain regulatory compliance requirements (PCI DSS, GDPR, PSD2) and financial data security standards
• Maintain traceability between business requirements, system specifications, technical implementations, and test cases
• Participate in sprint planning, technical refinement sessions, and architecture review boards to ensure alignment between product vision and technical execution