Jobs at Djinni

SouthRivers Data is a data & AI engineering partner. We strengthen the teams of consultancies and end clients across the EU, UK, and North America with senior data and AI engineers.

We're looking for an experienced Data Engineer to drive the development and maintenance of our data platform built on Azure. If you have strong hands-on experience with Databricks and Microsoft Fabric, we'd love to talk to you.

Responsibilities:

• Design, build, and maintain ETL/ELT pipelines using Azure Data Factory / Databricks
• Work with Microsoft Fabric: building data pipelines, lakehouse architecture, and semantic models
• Optimize performance and cost efficiency of data solutions on Azure
• Ensure data quality, reliability, and scalability across pipelines
• Collaborate with data analysts, ML engineers, and product teams to understand data requirements
• Contribute to data architecture design (data modeling, data governance)
• Conduct code reviews and mentor junior/mid-level engineers

Requirements:

• 3+ years of experience in Data Engineering
• Deep expertise in Azure (Data Factory, Synapse, Storage, Key Vault, etc.)
• Hands-on experience with Databricks (Spark, Delta Lake, Unity Catalog)
• Experience with Microsoft Fabric (Lakehouse, Data Pipelines, OneLake)
• Strong proficiency in SQL and Python (or Scala)
• Experience building and optimizing ETL/ELT processes
• Solid understanding of data modeling principles (dimensional modeling, star/snowflake schema)

Nice to Have:

• Experience with CI/CD for data pipelines (Azure DevOps, GitHub Actions)
• Knowledge of Power BI
• Experience in a regulated/enterprise environment
• Microsoft certifications (DP-203, Fabric Analytics Engineer, etc.)

Summary

We are looking for a proactive and results-driven SDR to join Red Rocket Software and help grow our outbound sales pipeline across European markets. In this role, you will be responsible for identifying potential clients, building targeted outreach campaigns, qualifying leads, and booking intro calls for the sales team.

You will work closely with Business Development and Marketing teams to generate new business opportunities for design & development services through LinkedIn outbound, personalized messaging, and strategic prospect research.

Responsibilities

• Build and execute outbound outreach campaigns via LinkedIn and other channels
• Research and identify ICP-fit companies and decision-makers
• Create personalized multi-touch outreach sequences
• Generate and qualify sales opportunities for the sales team
• Book and confirm intro calls with potential clients
• Maintain accurate CRM records and update lead statuses
• Track outreach performance and optimize messaging based on results
• Conduct account research using LinkedIn, company websites, Clutch, and other tools
• Collaborate with Business Development and Marketing teams to improve targeting and messaging
• Run A/B tests for outreach messages and analyze reply rates
• Maintain consistent outreach activity and follow-up discipline

Requirements

Must Have

• 1+ year of experience in SDR / Lead Generation / B2B Outreach roles
• Strong written English (B2+ minimum)
• Experience with LinkedIn Sales Navigator or similar prospecting tools
• Understanding of outbound sales processes and lead qualification
• Experience working with CRM systems (Pipedrive or similar)
• Ability to personalize outreach at scale
• Strong communication and organizational skills
• High level of ownership and self-management

• Ability to handle rejection and stay motivated in outbound environments

   

Nice to Have

• Experience in IT outsourcing, software agencies, or SaaS
• Experience working with European markets (DACH, Poland, Switzerland)
• Familiarity with Apollo, Instantly, Clay, or automation tools
• Understanding of tech buyer personas (CTO, Founder, Head of Product)
• Polish or German language skills

• Startup or agency background

   

What We Expect From You

• Ownership mindset and ability to work independently
• Strong attention to detail
• Consistency in outreach and follow-ups
• Analytical thinking and willingness to improve messaging through data
• Ability to balance outreach volume with personalization quality
• Proactive communication and collaboration with the team

We are looking for a senior frontend engineer to build high-performance 3D scientific visualization directly in the browser.

You will work at the intersection of frontend engineering, GPU programming, and large-scale data visualization. The core challenge is making complex 3D and time-varying datasets interactive in the browser without requiring users to download or fully load them first.

What you will do

• Build browser-based 3D visualization using TypeScript and WebGPU.
• Render large meshes, point clouds, volumetric fields, and other scientific data.
• Integrate visualization with asynchronous and random-access data streaming.
• Design efficient GPU buffer management, caching, and incremental scene updates.
• Build React-based UI around the visualization experience.
• Profile and optimize CPU, GPU, memory, and network performance.

• Work closely with systems, backend, and GPU engineers on end-to-end data delivery.

   

What we are looking for

• Strong production experience with TypeScript / JavaScript.
• Practical experience with WebGPU, or deep WebGL experience with an interest in moving to WebGPU.
• Strong understanding of performance optimization in browser applications.
• Experience with React or another modern frontend framework.
• Good knowledge of vector math, coordinate systems, cameras, transforms, and spatial data structures.

Nice to have

• Experience with Three.js, Babylon.js, vtk.js, React Three Fiber, or custom rendering engines.
• WGSL, GLSL, CUDA, Vulkan, DirectX, or Metal experience.
• Scientific visualization experience with ParaView, VTK, VisIt, or similar tools.
• Volume rendering, isosurfaces, unstructured meshes, point clouds, particles, or large geometry.
• LOD systems, spatial partitioning, octrees, BVHs, or GPU-driven rendering.
• Background in CAD, simulation, geospatial, medical imaging, games, or visualization software.

We are hiring on behalf of our client – an American media company with an office in Warsaw. They run a high-volume, performance-driven newsletter portfolio and drive traffic to advertisers and brand partners through owned channels. Affiliate revenue is a core part of the business, and they need someone to own the partner relationships that make it work.

This is a senior, commercial role. You will be the main point of contact for advertisers, affiliate networks, and affiliate managers — building relationships strong enough that partners bring you their best deals first, before anyone else sees them.

You will own payout negotiation end to end: commission rates, CPAs, rev shares, bonuses. That means reading performance data, spotting where a deal is underpriced, and pushing for better terms – not just accepting what a partner offers. You also own tracking hygiene across campaigns: links, sub-IDs, attribution, making sure nothing breaks and no revenue leaks.

Responsibilities

1. Partner communication & coordination

• Be the main point of contact for advertisers, affiliate networks, and affiliate managers
• Keep promo schedules, offer updates, performance feedback, and follow-ups tight and proactive
• Build strong relationships so partners prioritize us and share better deals first
• Spot new opportunities early and move fast to secure them

2. Payout negotiation & deal management

• Negotiate commission rates, CPAs, rev shares, and bonuses to maximize earnings
• Regularly review terms and push for improvements based on performance data
• Identify underperforming/undervalued deals and renegotiate with clear numbers
• Manage renewals and escalate when terms need to change

3. Tracking, links & execution

• Own tracking links, sub-IDs, parameters, and attribution hygiene across campaigns
• Prepare promo packages for internal teams (links, copy, creatives, instructions)
• Coordinate launches across multiple partners and deadlines at the same time
• Keep clean records of partners, offers, assets, and timelines

4. Performance & growth

• Monitor partner performance and flag where we’re leaving money on the table
• Improve partner workflows so we execute faster and capture more revenue
• Longer-term: industry events and conferences can be part of growth, but near-term focus is performance and revenue impact

Requirements

• 4+ years in affiliate / performance marketing (preferably publisher/traffic side)
• Proven experience negotiating payouts (CPA, rev share, commissions, bonuses) with advertisers or networks
• Strong understanding of tracking (links, sub-IDs, attribution, what breaks conversions)
• Highly organized with a “zero mistakes” mindset
• Strong English (C1+)
• Comfortable managing multiple partners and deadlines in parallel
• Hungry to grow, performance-oriented, and comfortable with occasional irregular hours when needed

Nice to have

• Experience with Impact, CJ, ShareASale (or similar platforms)
• Affiliate network relationships / strong partner Rolodex
• Experience in digital media / newsletter monetization
• Comfortable attending industry events

What we offer

• Competitive salary + performance-based bonuses
• 21 paid vacation days + 14 paid sick leaves
• Warsaw office available (hybrid setup)
• A fast-moving, high-performing team with real ownership and growth opportunities

Important: after confirming your application on this platform, you’ll receive an email with the next step: completing your application on our internal site, LaunchPod. So keep an eye on your inbox and don’t miss this step — without it, the process can’t move forward.

Why join us

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :)

About the role

We are looking for a Senior Data Scientist to develop predictive models and quantitative analytics that power risk-based vulnerability prioritization within a large-scale enterprise security program. You will structure and analyze massive security telemetry datasets, build ML algorithms to eliminate scanning noise and false positives, and establish unified data dashboards to drive adoption of data-driven security governance. The role requires 5+ years of data science experience with direct commercial application to vulnerability management, operating with full autonomy.

What you will do

• Develop predictive models and quantitative analytics to prioritize vulnerabilities based on contextual risk and business impact;
• Structure and analyze massive outputs of security data from across the enterprise ecosystem to support the ASPM framework;
• Create machine learning algorithms or statistical models to automatically identify and filter out scanning noise and false positives;
• Establish a unified data delivery structure and dashboards to drive the adoption of data-driven security governance.

Must haves

• 4+ years of commercial data science experience, operating completely autonomously with no required supervision;
• Advanced proficiency in Python, R, and SQL;
• Experience with machine learning frameworks such as TensorFlow and PyTorch;
• Experience with data visualization tools;
• Commercial experience applying data science to vulnerability management;
• Upper-intermediate English level.

Nice to haves

• Familiarity with Cloud Security Posture Management (CSPM) data outputs (e.g., Wiz).

The benefits of joining us

• Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps
• Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities
• A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands
• Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.

Meet Our Recruitment Process

Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback:

• Short online form to confirm basic requirements
• 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process.
• 5-minute introduction video

Synchronous stage – Live interviews

• Technical interview with our engineering team (scheduled at your convenience)
• Final interview with your future teammates

If it’s a match — you’ll get an offer!

About the Company

Biohackers World is a leading US-based health and wellness company, connecting people through conference & expo events, impactful media channels, and a transformative marketplace which bring together science, wellness, and community. We connect health innovators, visionary speakers, longevity experts, spirituality and health optimization enthusiasts into one transformative experience. We create an immersive environment where ideas are exchanged, collaborations are formed, and the future of health and technology is shaped.

 Mission of the Role

We're seeking a Senior Marketplace Partnerships Manager to build and manage our third-party seller ecosystem. You'll identify, onboard, and nurture brand partners whose products belong in our marketplace—while optimizing their performance and ensuring compliance.

This is an individual contributor role with strategic ownership. You'll report to the Head of Growth and own the full lifecycle: vendor sourcing, commercial negotiation, onboarding, ongoing account management, and performance reporting.

 Key Responsibilities

Vendor Acquisition

• Build and maintain a target list of 100–200 prospective brands across categories: supplements, nootropics, wearables, at-home diagnostics, recovery devices, light therapy, sleep optimization, mental and cognitive health, aesthetic, nutrition protocols and other health and wellness products.
• Conduct proactive outreach (cold email, LinkedIn, intro calls) to generate qualified leads.
• Vet brand product quality, regulatory compliance, and alignment with audience values.
• Convert prospects into active vendors through persuasive pitches and onboarding.
• Analyze marketplace data to identify underrepresented categories or high-demand gaps. Proactively recruit brands to fill those gaps and diversify product offerings.

Commercial Negotiation & Contracting

• Set commission structures by category (typically 10–30% take rate depending on margins and volume).
• Negotiate minimum performance commitments, and payment schedules.
• Draft and manage vendor agreements, including terms for refunds, returns, and brand representation.
• Identify upsell opportunities (featured placements, bundle promotions, event booths).

Onboarding

• Guide vendors through listing setup: product catalogs, images, descriptions, pricing, inventory feeds.
• Coordinate with technical/operations teams on marketplace platform integration (Shopify Plus, WooCommerce).

Account Management

• Serve as primary point of contact for 30–80 active vendors.
• Conduct quarterly business reviews (QBRs) with top performers, sharing sales data and growth recommendations.
• Monitor vendor KPIs: sell-through rates, return rates, customer ratings, response times.
• Address issues quickly: payout discrepancies, stock-outs, customer complaints, listing errors.

Qualifications

• 4–6 years in e-commerce partnerships, marketplace operations, or vendor management
• Proven success building or scaling a third-party seller program with measurable GMV/commission growth
• Comfortable setting commission rates, negotiate terms, and performance commitments
• Familiarity with marketplace platforms (Shopify Plus, WooCommerce, or equivalents)
• Proficient in spreadsheets, dashboards, and basic BI tools for performance analysis
• Clear, persuasive writing and speaking; able to manage vendor expectations professionally

Project Details
Project: Greenfield Accounting Engine
Start: Mid/late October, latest early November 2026
Duration: 6 months with option for extension
Workload: 120–160 hours/month
Location: Remote / Nearshore
Time Zone: Maximum ±1 hour from Germany
Language: English
Team: 5 Backend Developers + 1 Engineering Manager

The project is particularly suitable for experienced backend engineers who are comfortable working in a modern, architecture-driven environment with a strong focus on engineering quality, scalability and structured software delivery.


Developer focus: Kotlin + Spring Boot/WebFlux + AWS + Event Sourcing + DDD + TDD, with very strong software quality standards.

The client is building a new Accounting Engine that will become the central accounting platform for new markets. The solution will process business events such as invoices, receipts and transactions, generate accounting entries, and support reporting and further data-driven analytics.

Must-have

Backend:

• Kotlin
• Spring Boot
• Spring Boot WebFlux
• AWS
• PostgreSQL
• AWS Aurora PostgreSQL
   

Architecture:

• Event Sourcing
• Domain-Driven Design (DDD)
• Modern backend architecture
• Hexagonal Architecture
   

Quality:

• TDD
• Test-driven development
• High test coverage
• Strong software quality standards
• Quality gates
   

🟡 Should-have

• jOOQ
• Flyway
• Hexagonal Architecture
• Greenfield projects
• GitHub
• GitHub-based CI/CD
• SonarCloud
• Experience working with Product Owners
• Delivery-driven development
   

🟢 Nice-to-have

• AI Engineering
• AI-assisted development
• AI Delegated Engineering
• Claude / Cursor
• Basic accounting knowledge

DMT Business Development is a leading B2B lead generation and appointment setting agency. We create tailored & effective strategies for clients based on their needs and goals. Our team generated over 2m leads for hundreds of clients and booked 10k+ appointments with businesses of any scope.

Currently we have an open vacancy for Sales Development Representative.
 

Responsibilities:

• Communicate with potential clients via LinkedIn and email (we provide templates and contact lists);
• Handle responses, convert leads conversations into appointments;
• Make calls to prospects as a follow-up step if required;
• Prepare simple weekly and monthly reports;
• Join weekly calls with our team and clients from the US and/or Europe.
   

Ideal Candidate Profile:

• 1+ year of experience in sales, business development, or lead generation;
• Strong written and spoken English (B2/C1);
• Highly organized, proactive, and eager to learn;
• Able to multitask and adapt quickly in a dynamic environment;
• Passionate about growing in sales and business development;
• Results-driven mindset with a focus on exceeding targets and delivering value to clients.

Working conditions:

• Working hours: Monday-Friday, 2 PM to 10 PM (Kyiv time);
• 20 paid vacation days per year and company events.
• A young and friendly team environment.
• Benefits include company guarantees, bonuses, and corporate event.

We are looking for an aspiring Lead Generation Specialist to join our dynamic team. If you are an ambitious individual aiming for professional development, we have an excellent opportunity for you to realise your potential. The field of IoT is expected to continue growing by 25% annually. If you're enthusiastic about joining this field, TEKTELIC offers an excellent environment for advancing your professional journey. 

Mandatory requirement: we consider only Kyiv-based candidates.

Overview of the Role

You'll mainly focus on turning cold leads into active clients by using follow-up techniques, including setting up introductory calls with prospects. Being proactive, an excellent communicator, and crafting messages to our Ideal Customer Profile are key to success in this role. 

Requirements:

- 6+ months of proven experience in lead generation, sales, or a similar role, with a focus on cold outreach. 

- Knowledge of CRM systems like HubSpot, Pipedrive, etc.

- Ability to work independently and as a productive sales team member, making outbound prospecting reach outs by email, LinkedIn, and other platforms daily.

- Excellent English communication skills, both written and verbal. 

- Experience using LinkedIn and Sales Navigator or similar prospecting applications for new lead generation while maintaining follow-ups with old prospecting connections.

- Experience in crafting effective communication sequences. 

Responsibilities: 

- Nurture leads using Sales Navigator. 

- Create personalized messages and follow-ups. 

- Schedule introductory meetings with clients. 

- Conduct daily professional network research and outreach via LinkedIn, Sales Navigator, Industry Conference sites, and other resources.

- Collaborate closely with the Sales Team. 

- Record daily activities in CRM. 

We Offer:

- Competitive compensation.

- PE accounting support.

- Well-being program.

- Comprehensive benefits package, including health insurance from day one.

- Opportunity for career growth in the dynamic field of IoT.

- Collaborative and innovative work environment.

- Potential for rapid advancement to roles such as Sales Manager or Business Development Manager.

- Paid Time-off and an additional week off during Christmas Holidays.

- Engaging social events.

If you are passionate about sales, possess excellent communication skills, and are excited about contributing to the growth of the IoT industry, we invite you to apply for the Lead Generation Manager position at TEKTELIC. Join us in addressing real-life challenges through cutting-edge IoT solutions.

About TEKTELIC 
TEKTELIC is a global leader in LoRaWAN® IoT solutions headquatered in Canada - designing and manufacturing gateways, sensors, having our own network server, and focusing on end-to-end IoT infrastructure from its base in Calgary, Canada. Founded in 2009, we focus on three high-growth verticals: Industrial (Oil&Gas), Smart Buildings, Asset Tracking & Personnel Monitoring, and Digital Medicine. Our carrier-grade products are deployed by hundreds of LPWAN operators worldwide. 

*Mandatory requirement: we consider only Kyiv/Lviv-based candidates for this role.
 

About the Role 
We're hiring our first AI Automation Specialist to lead applied AI across the company. This is a hands-on, cross-functional role: you'll sit with teams in Sales, Operations, Finance, and beyond, find the work that drains their time, and replace it with reliable AI-powered workflows. 

This is an implementation and ownership role, not a research one. You won't be training models or doing data science — you'll be composing existing AI tools, APIs, and no-code/low-code platforms into workflows that run in production, and you'll own them once they're live. If you like turning "we waste ten hours a week on this" into something that just works, this is your role. 
 

We’re looking for someone long-term, at least a year commitment. 

Responsibilities 

• Assess each department's workflows to identify high-value opportunities for AI automation (repetitive, multi-step, or judgment-assisted tasks). 
   
• Design and prototype agentic workflows (multi-step AI agents, tool integrations, approval/human-in-the-loop checkpoints) tailored to each department's needs. 
   
• Act as the internal point of contact between departments for ai transformation 
   
• Select and configure the right tools/platforms (e.g., Claude Cowork, MCP connectors) for each use case 
   
• Monitor deployed workflows for performance, drift, and failure modes, and iterate or retire workflows that underperform. 
   
• Track adoption metrics per department and report progress to leadership. 

Requirements 

• Experience in process automation with AI, systems integration, business-process optimization, or a closely related field. 
• Ability to communicate across both technical and non-technical teams. 
• Strong process-mapping and business-analysis skills — the ability to translate a business problem into a working, monitored automation. 
• An ownership mindset: you care about reliability, edge cases, and proving impact — not just shipping a demo. 
• Hands-on experience with workflow automation platforms — any of n8n, Make, Zapier, or Power Automate. 
• Comfort with APIs, webhooks, and JSON, plus the ability to write light scripts (Python or JavaScript) when a no-code tool hits its ceiling. 
• English level: Upper-Intermediate. 
   

*This is an applied automation role. Machine learning, model training, algorithm development, and data science are not part of this position. 

What We Offer 

• Real ownership from day one — you'll define how AI works across the whole company, not just execute someone else's plan. 
• Direct impact and visibility — your work touches every department and is reported to leadership. 
• Modern tooling and autonomy to choose the right platforms for the job. 
• Competitive salary  
• Health insurance + Well-being program (250 USD/year) 
• Paid time off + extra Christmas week 
• PE accounting support 
• Supportive, collaborative team 
• Engaging Team events 

Mirko Solutions is an international IT company specializing in web and mobile development for clients in the US, Canada, EU, and Australia. We deliver high-quality digital solutions including web applications, mobile apps, cloud systems, and custom software for businesses worldwide.

Due to the rapid growth of our company, we are currently looking for an experienced Middle Fullstack Developer (Node.js + React) to join our team and work on a new international project in our Tallinn office.

Responsibilities:

• Develop and maintain scalable backend and frontend functionality
• Build and integrate REST APIs and third-party services
• Develop backend services using Node.js
• Build and maintain frontend applications using React
• Work with databases and complex business logic
• Investigate and fix production and integration-related issues
  Participate in code reviews and technical discussions
• Collaborate with QA, Team Leads, and other developers during feature delivery

Requirements:

• 3+ years of commercial software development experience
• Strong hands-on experience with Node.js
• Solid experience with React
• Good knowledge of TypeScript
• Experience designing and integrating REST APIs
• Experience with SQL and relational databases
• Experience with Git and Docker
• Understanding of CI/CD practices
• Good understanding of software development principles and best practices
• Good command of English
• Ability to work from our Tallinn office

We offer:

• Opportunity to work on an international project
• Professional growth and development
• Friendly and supportive team environment
• Collaboration with experienced international teams

WHO WE ARE:

Volpis is a company of ambitious professionals providing Web & Mobile App Design and Development services for more than 9 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.

Location: Lviv only (remote)
Candidates must be based in Lviv. Work is remote.

Required experience:

• 4 + years of experience in project management within an outsourced or product IT company;
• Proven track record of delivering multiple successful projects (preferably in web, mobile);
• Technical understanding gained through experience or education in development, QA, or business analysis.

Required skills:

• Ability to manage the full delivery lifecycle — from pre-sale/discovery to release and post-launch support;
• Proficiency in Jira, Confluence, and documentation management, including maintaining structured project documentation, roadmaps, and delivery reports;
• Experience with project tracking and planning tools, such as Gantt charts, burndown charts, and Earned Value Management (EVM) metrics;
• Solid understanding of Agile and Scrum principles (experience with Waterfall is a plus);
• Excellent analytical and problem-solving abilities with a hands-on mindset;
• Strong leadership and communication skills — able to motivate teams, resolve conflicts, and maintain client confidence;
• Risk management expertise: able to identify potential issues early, assess their impact, and develop effective mitigation plans;
• Proactive and ownership-driven mindset: takes initiative, proposes improvements, and drives decisions rather than waiting for direction;
• Business-oriented thinking: understands how PM decisions impact client goals, budgets, and company success;
• Excellent time management and prioritization skills;
• Participation in HR-related processes — onboarding, performance reviews, salary reviews, and offboarding;
• Involvement in recruitment — interviewing, evaluating, and selecting candidates for project roles;
• Initiating and managing termination processes where necessary;
• Experience with financial coordination — preparing or verifying invoices, tracking project profitability, and supporting financial transparency;
• Upper-Intermediate / Advanced English, both verbal and written.

Would be a plus:

• Project management certification (PMI, CSM, PSM, etc.);
• Experience working with multi-team or complex projects;
• Technical or engineering degree.

Responsibilities:

• The primary goal is to ensure each project’s success — for the client, the company, and the team;
• Define and manage project scope, objectives, and deliverables aligned with client expectations;
• Lead and coordinate cross-functional teams, ensuring effective collaboration and accountability;
• Monitor project progress, identify bottlenecks, and proactively address risks before they escalate;
• Control budget, timelines, and quality to deliver predictable results;
• Facilitate sprint planning, reviews, retrospectives, and recurring status meetings;
• Propose and implement process improvements to enhance efficiency, quality, and client satisfaction;
• Act as the main communication bridge between the client and internal stakeholders, ensuring transparency and trust;
• Support the company’s overall growth through continuous improvement, feedback, and innovation.

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.

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.

Location: Lviv only (remote)
Candidates must be based in Lviv. Work is remote.
 

Required skills:

• 8+ years of Project Management experience in software development, including complex, multi-team or multi-stream projects;
• Ability to manage the full delivery lifecycle — from pre-sale and discovery to release and post-launch support;
• Strong technical background and understanding of software development, architecture, integrations, dependencies, and technical risks;
• Proven ability to work with ambiguity, changing requirements, priorities, and complex dependencies;
• Strong client and stakeholder management skills, including difficult conversations, negotiations, and escalations;
• Strong leadership and people management skills — able to resolve conflicts, address performance issues, and build team accountability;
• Advanced risk management and problem-solving skills, including experience recovering projects that are off track;
• Strong financial and business awareness — budgets, profitability, forecasting, staffing, and the commercial impact of delivery decisions;
• High level of ownership and autonomy — able to make decisions and handle complex situations without constant escalation;
• Solid understanding of Agile/Scrum and project planning practices, with proficiency in Jira and Confluence;
• Experience participating in recruitment and HR processes, including interviews, performance reviews, and team changes;
• Advanced English, including the ability to independently lead complex client conversations.

Would be a plus:

• Previous experience in a technical role (Software Engineer, QA, BA, etc.);
• Technical or engineering degree;
• Project Management certification (PMP, PMI-ACP, CSM, PSM, etc.);
• Experience managing multiple projects or accounts;
• Experience with account growth or identifying new business opportunities.

Responsibilities:

• Take end-to-end ownership of project success from delivery, client, financial, and team perspectives;
• Lead complex projects with multiple teams, workstreams, stakeholders, and dependencies;
• Establish structure and processes for new, ambiguous, or problematic projects;
• Manage scope, priorities, timelines, budget, risks, and client expectations;
• Own client communication, including scope negotiations, difficult conversations, and escalations;
• Proactively identify risks and drive mitigation and project recovery plans;
• Manage project financial performance, including budget, profitability, forecasting, and staffing efficiency;
• Work closely with technical teams to understand estimates, dependencies, constraints, and technical risks;
• Lead teams, build accountability, and handle performance and communication issues;
• Participate in pre-sales and discovery, including estimates, team composition, risks, and delivery approach;
• Mentor less experienced PMs and contribute to improving the company’s delivery practices.

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.

Join Sigma Software to help build advanced machine learning solutions for one of the large-scale players in the programmatic advertising ecosystem. We are looking for a Senior Machine Learning Engineer with strong production ML expertise and deep interest in real-time optimization systems, large-scale behavioral data, and AdTech challenges.

In this role, you will work with a dedicated Sigma Software team on a predictive modeling platform integrated with a live ad exchange processing hundreds of millions of auction requests daily. You will contribute to sophisticated ML solutions involving bid optimization, calibration, counterfactual evaluation, and constrained decision-making systems.

We as a company offer the opportunity to work on technically challenging products, collaborate with experienced engineers and data scientists, and make a direct impact on large-scale production systems.

CUSTOMER

Our Customer is a technology company operating supply-side infrastructure within the programmatic advertising ecosystem. The company manages a high-scale ad exchange platform and is investing in predictive decisioning capabilities to improve advertising performance, audience targeting, and campaign optimization through advanced machine learning technologies.

PROJECT

The project focuses on building a predictive modeling and optimization platform on top of a live ad exchange environment. The platform evaluates and filters advertising supply in real time, predicts high-performing audience contexts, builds look-alike audiences from small seed datasets, and optimizes campaign performance across multiple business objectives and operational constraints.

The team works on complex machine learning challenges including censored bid-landscape modeling, sparse and delayed conversion attribution, calibration systems, counterfactual evaluation, and constrained optimization models. The solution is designed for large-scale production use and close collaboration with the Customer’s internal data science organization.

Job Description

• Build and improve censored bid-landscape models to estimate clearing-price distributions from partially observed auction data
•  Develop real-time win probability estimation models responsive to bid pricing dynamics
• Design and implement hierarchical lift estimation models with confidence-bound-based selection strategies
• Build conversion propensity models using sparse, delayed, and aggregate-only labels
• Develop look-alike audience modeling approaches using positive-unlabeled learning and embedding-based nearest-neighbor techniques
• Implement advertiser-level calibration strategies while independently monitoring ranking and calibration quality
• Design robust offline evaluation frameworks using inverse-propensity scoring, doubly-robust estimators, and importance reweighting
• Define exploration strategies and propensity logging approaches to ensure reliable downstream correction and evaluation
• Develop constrained optimization mechanisms for campaign objectives, pricing constraints, and volume targeting
• Contribute to data diagnostics, capability assessments, and evidence-based model recommendations
• Collaborate with the Customer team during post-launch tuning and performance validation cycles
• Prepare technical documentation and knowledge transfer materials for the Customer’s internal data science team
• Participate in architecture discussions and contribute to scalable ML platform design decisions

Qualifications

• 5+ years of experience in Machine Learning or Data Science with production-grade models measured against business KPIs
• Strong Python skills including numpy, pandas, and scikit-learn
• Strong SQL skills and experience working with large-scale datasets
• Deep practical experience with XGBoost, LightGBM, or CatBoost
• Strong understanding of regularization, calibration methods, and categorical feature handling
• Strong knowledge of probability, statistics, confidence intervals, and statistical power analysis
• Experience with feature engineering for structured and behavioral datasets
• Hands-on experience with Spark or PySpark
• Practical knowledge of experimentation frameworks and A/B testing methodologies
• Experience with advanced validation approaches including temporal splits, leakage detection, drift analysis, and slice-based metrics
• Understanding of explainability techniques such as SHAP and permutation importance
• Upper-Intermediate English level or higher

WILL BE A PLUS

• Experience in AdTech modeling including CTR/CVR prediction, bid-landscape modeling, audience segmentation, and RTB mechanics
• Experience working with sparse, delayed, or censored labels
• Knowledge of attribution modeling, survival analysis, and positive-unlabeled learning
• Practical experience with counterfactual and off-policy evaluation techniques
• Understanding of calibration methods including isotonic regression and Platt scaling
• Experience with hierarchical, empirical-Bayes, or partial-pooling models
• Knowledge of constrained or multi-objective optimization approaches
• Experience with uplift modeling and causal inference methods
• Experience with Vertex AI or similar managed ML training environments
• Publications, competitive modeling achievements, or open-source contributions related to Machine Learning or AdTech

PERSONAL PROFILE

• Strong analytical and problem-solving skills
• Ability to work effectively in a highly data-driven environment
• Strong communication and stakeholder management abilities
• Ability to explain complex modeling decisions to technical and non-technical audiences
• Proactive mindset with strong ownership mentality
• Attention to detail and scientific rigor in experimentation and evaluation

Position Overview

NYC Glass & Window Repair is looking for a motivated, organized, and results-driven Sales Representative to manage incoming leads, communicate with residential and commercial customers, prepare estimates, follow up on opportunities, and convert inquiries into booked projects.

The ideal candidate is comfortable speaking with customers, understands consultative sales, follows up consistently, and takes ownership of every lead from the initial inquiry through closing and handoff to the operations team.

Experience in windows, doors, glass, construction, home improvement, or building services is highly preferred but not required if the candidate is willing and able to learn the technical aspects of our services.

Key Responsibilities

• Respond quickly to new leads received by phone, email, website, text, and other channels.
• Speak with customers to understand the problem, project scope, budget, timeline, and expectations.
• Review customer photos, videos, measurements, drawings, and project documentation.
• Determine whether the project can be quoted remotely or requires an on-site assessment.
• Schedule site visits and coordinate with estimators when necessary.
• Prepare and send professional estimates and proposals.
• Explain proposed solutions, materials, hardware, glass options, lead times, warranties, and pricing to customers.
• Follow up consistently on all open estimates and sales opportunities.
• Negotiate professionally while protecting company margins.
• Convert qualified leads into signed/approved projects and collect required deposits.
• Upsell and cross-sell appropriate services when they genuinely benefit the customer.
• Maintain accurate customer information, notes, estimates, follow-up dates, and sales stages in the CRM system.
• Re-engage previous customers and older leads when appropriate.
• Coordinate sold projects with scheduling, purchasing, project management, and installation teams.
• Maintain communication with customers until the project has been properly handed off.
• Develop long-term relationships with property managers, general contractors, architects, designers, building owners, and repeat customers.
• Meet individual sales, revenue, conversion-rate, and follow-up KPIs.

Services the Sales Representative Will Sell

The representative will be trained to sell services including window repair and replacement, insulated glass (IGU) replacement, commercial and residential glass replacement, door repair and installation, storefront glass and aluminum systems, shower enclosures, custom mirrors, glass partitions, railings, historical window restoration, window screens, smart glass and window film, and specialty glazing projects.

Sales Process

The Sales Representative is expected to take ownership of the sales pipeline:

New Lead → Qualification → Site Visit/Estimate → Proposal → Follow-Up → Negotiation → Closing → Deposit → Operations Handoff

A lead should never be left without a clearly documented next action or follow-up date.

Requirements

The ideal candidate should have excellent verbal and written English, strong communication and negotiation skills, and the confidence to speak with both homeowners and commercial clients.

The candidate must be highly organized, comfortable working with CRM systems, able to manage multiple opportunities simultaneously, and persistent with follow-ups without being overly aggressive.

Basic mathematical skills are required for measurements, quantities, pricing, percentages, and margins. The candidate must also be comfortable learning technical terminology related to glass, windows, doors, hardware, framing systems, and construction.

Preferred Experience

Previous experience in construction sales, window and door sales, glass and glazing, home improvement, building materials, property services, or B2B sales is a strong advantage.

Experience dealing with property managers, general contractors, architects, designers, management companies, and commercial clients is also highly desirable.

Key Performance Indicators (KPIs)

Performance should be evaluated primarily on sales revenue, gross profit/margin, lead-to-sale conversion rate, estimate-to-sale conversion rate, speed of response to new leads, follow-up completion rate, average project value, CRM accuracy, and repeat/referral business.

What We Are Looking For

We want someone who is sales-driven but not pushy. The goal is not simply to give customers a price—it is to understand what they need, recommend the correct solution, explain why it is the right solution, build trust, and close the project.

The right candidate should think:

“Every qualified lead needs a clear next step until the customer buys, declines, or the opportunity is formally closed.”