Jobs at Djinni

We are building one of the most powerful live-streaming platforms, already connecting 400K+ monthly active users through live events, interactive video chats, and real-time community experiences. Our mission is bold: bring joy, fight loneliness, and deliver safe, ad-free entertainment that keeps people coming back. This is a complex, fast-moving space, and we love it that way! So, you will join a passionate, expert team tackling everything from scaling AI-powered recommendations to launching high-impact, data-driven features that boost monetization and engagement. Every idea counts here, and every release reaches a massive global audience. 
We are now expanding into Arab countries and Europe, enhancing content quality, and rolling out new features to keep users hooked. We are among the Top 5 streaming products in the US and rank in the Top 10 worldwide. Our next milestone: break into the global Top 5, and we are moving fast to make it happen. 

About your role: You will create high-impact creatives across paid traffic channels, directly supporting the performance of our user acquisition efforts in US, UK, CA, and AU markets — one of the most competitive niches in the industry. You'll be involved from concept ideation through to final delivery, working closely with designers, the UA team, and cross-functional partners.

Here you'll enjoy full ownership and the freedom to make independent decisions in your area of responsibility, within a bureaucracy-free environment built on fast, direct communication.

 

In this role, you will

• Creative production for each traffic channel (Meta, TikTok, Snapchat, DSP, Google)
• Collaborate with designers to create visual and textual content for each platform
• Develop and brainstorm creative concepts, from initial ideation to finalized execution
• Analyze competitors' concepts to generate new ideas and provide creative inspiration for the design team
• Research user behavior and funnels, identifying factors that impact performance and success
• Close cooperate with the user acquisition team and other departments (analytics, product team, b2b)
• Analyze creative testing, including structured reporting for product & marketing teams"

It’s all about you

• At least 6 months of experience in performance marketing with a focus on app and/or web projects
• KPI-driven mindset: hands-on daily work with CPA, CTR, ROI, and a clear understanding of how to hit and optimize targets
• Experience creating detailed technical briefs for designers to ensure effective creative production
• Proven ability to conduct competitor and market research and translate insights into strategy
• Confident user of analytical and data visualization tools (GA4, Looker Studio, Power BI, Tableau)
• Strong organizational skills: backlog management, task prioritization, launch planning, and production coordination
• English level B2+

Nice to have:

• Experience in the social discovery niche
• Familiarity with AI tools for creative generation or performance analysis

What we offer

Care and support: 

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity recovery support allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
   

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
   

Hiring process

• Interview with HR
• Test Task
• Interview with Hiring Team
• Bar-rasing 
• Reference check
• Offer

🚀 We're Hiring: PPC & SEM Campaign Manager Home Services | US Market | Full-Time | PST Hours

We're a performance-driven digital marketing agency specializing in home services and construction lead generation for the US market. We're looking for a hands-on Campaign Manager who owns results end to end — from strategy to the qualified phone call.

This is not a role for someone who only knows how to run ads. We need someone who understands the full journey: from search intent to phone call, from phone call to qualified opportunity, from opportunity to real revenue for a local service business.

⚠️ Non-Negotiable Requirements — Please Read Before Applying: → Full-time availability during US PST working hours 

→ Native-level English — written and verbal, non-negotiable 

→ Proven hands-on experience with the US market across Google, Meta, Bing, and native 

→ Solid, verifiable work history — not freelancers filling time between gigs 

→ Home services / construction experience required — e-commerce, SaaS, or fintech background alone is not enough

What you'll own: 

→ Plan, build, and manage paid campaigns across Google Ads, Meta, Microsoft/Bing, Taboola/Outbrain, Yelp Ads, Google Local Services Ads, and Nextdoor/LinkedIn as needed 

→ Create and optimize full-funnel lead generation strategies — audience targeting, ad copy, landing pages, tracking, and lead-nurturing funnels 

→ Monitor performance and continuously improve KPIs — cost per lead, lead quality, conversion rate, and ROI (not just clicks) → Own setup and integrity of conversion and call tracking so every lead is measured accurately 

→ Stay current on platform updates, A/B testing strategies, and market trends in home services 

→ Build repeatable systems, SOPs, reporting structures, QA processes, and campaign management workflows that allow the team to scale without losing quality 

→ Maintain strict QA discipline before every launch — budgets, geo-targeting, tracking, landing pages, phone numbers, forms, conversion actions, and campaign settings

AI & Automation — Core to This Role: 

→ Use AI to draft, test, and iterate ad copy and creative concepts at speed — with the judgment to edit and direct that output, never paste it raw 

→ Use AI for audience and keyword research, competitor analysis, and market intelligence 

→ Build reporting and analysis workflows that turn raw platform data into clear, decision-ready insights 

→ Be fluent in platform-native AI: Google Performance Max & Smart Bidding, Meta Advantage+, and AI-assisted creative — knowing when to trust automation and when to override it 

→ Build repeatable AI and automation systems using tools like Make.com, Zapier, or Google Apps Script to eliminate manual, repetitive work

Tracking & Attribution: 

✅ Hands-on with call tracking (CallRail or similar) and call-driven conversion measurement 

✅ Strong with GA4, Google Tag Manager, and conversion tracking across platforms 

✅ Familiar with offline conversion imports and server-side tracking to feed real lead quality back into platforms 

✅ You care what happens to a lead after the click — not just the cost of the click

Must-Haves: 

✅ Proven track record managing paid media campaigns targeting the US market 

✅ Deep knowledge of the home services vertical — remodeling, HVAC, solar, roofing, garage doors, windows, etc. 

✅ Demonstrated success generating high-quality leads at scale — measured by qualified leads and CPL, not vanity metrics 

✅ Experience building and managing end-to-end ad funnels from cold traffic to converted lead 

✅ Hands-on proficiency with Google Ads, Meta Ads Manager, Microsoft/Bing Ads, native platforms, and Google Tag Manager 

✅ Native-level English — strong written and verbal communication 

✅ Experience with Yelp Ads and Google Local Services Ads (LSA) — strong advantage 

✅ Familiarity with automation and lead-nurturing platforms — major plus

Who You Are: 

→ Independent, proactive, and execution-driven — you don't wait to be told what to do 

→ Data-minded but creative — constantly testing, iterating, and pushing performance boundaries 

→ You embrace AI and automation as tools for scale and smarter decisions — not as a gimmick or a crutch 

→ You think like a strategist and work like an operator 

→ You want to help small businesses grow — energized by making a real difference for an SMB owner, not by chasing the biggest budget

→ Loyal, analytical, hungry for results, and excited to grow as part of a small, sharp, accountable team

This role is NOT for you if: 

✖ Your background is primarily e-commerce/DTC, SaaS, or fintech 

✖ You rely on grey-hat or aggressive black-box agency tactics 

✖ You only want to direct strategy from above — we need someone hands-on, detail-oriented, willing to build, check, fix, test, and improve directly 

✖ You're a freelancer looking to fill time between gigs

Ready to shape the future of logistics technology? We are looking for a Middle/Senior Full Stack Developer to join our distributed team and help build a next-generation e-commerce fulfillment platform. This role offers remote flexibility with the option to work from Kraków, Poland. 

At Sigma Software, we partner with some of Europe’s most innovative companies, delivering solutions that combine cutting-edge technology with business impact. You will work in a collaborative Agile environment, leveraging modern frameworks and AI-assisted tools to create high-performance solutions. 

Why join us? You’ll be part of a long-term partnership, working on high-impact projects with access to advanced AI tools, cloud technologies, and a supportive team culture. 

CUSTOMER 

Our customer is one of Europe’s leading logistics providers, headquartered in Germany. Specializing in integrated supply chain systems and data-driven logistics optimization, they operate across multiple European markets, offering advanced warehousing, transportation, and fulfillment services. Sigma Software has been collaborating with them since 2017, delivering over 10 active projects that drive innovation and efficiency. 

PROJECT

You will contribute to the development of a next-generation e-commerce fulfillment platform designed to automate and optimize order processing, inventory management, and delivery tracking. The solution leverages modern web technologies and AI-assisted development tools to ensure scalability and efficiency. This is a chance to work on a high-impact product in a collaborative, Agile environment. 

Job Description

• Design, develop, and maintain robust software applications using TypeScript/JavaScript, Node.js, NestJS, and React.js 
• Implement new functionality from scratch, including role-based access control services, API integration services, and custom endpoints 
• Work in an AI-augmented development environment, leveraging tools like Claude Code, Cursor, and Microsoft Copilot 
• Collaborate closely with stakeholders to define, design, and deliver new features 
• Ensure code quality, security, and performance through critical evaluation of AI-generated outputs 
• Participate in SCRUM ceremonies and contribute to team planning, estimation, and retrospectives 

Qualifications

• 3+ years of commercial development experience with a focus on TypeScript/JavaScript 
• Proven expertise in Node.js, NestJS, React.js, Next.js, and REST API development 
• Experience with AI-assisted coding tools (Claude Code, Cursor, Microsoft Copilot, or similar) 
• Ability to write clear prompts for code generation and refactoring 
• Skills in evaluating AI-generated code for security and performance implications 
• Experience translating AI-generated specifications into implementation tasks 
• Proficiency in debugging and validating AI-generated code 
• Familiarity with AI-driven development frameworks (BMAD, Superpowers, GSD, spec-kit, or equivalent) 
• Experience with any cloud provider (preferably Azure) 
• Experience working in SCRUM teams 
• Fluent English 

WILL BE A PLUS

• Experience integrating and working with design systems (Tailwind, Storybook) 
• Proven experience with AI-augmented development (pet projects, certifications) 
• Participation in AI-assisted requirements breakdown and task decomposition using frameworks like spec-kit or BMAD 

PERSONAL PROFILE

• Strong communication, multitasking, and problem-solving skills 
• Analytical thinking and sound technical judgment 
• Quick grasp of existing digital products and architectures 

Native Media Buyer (Taboola / Outbrain)

We're looking for a Native Media Buyer with hands-on experience in Taboola, Outbrain, and other native platforms — someone who knows how to scale profitable campaigns and work with performance-driven traffic. This role is for a true operator: someone who understands funnels, works with data, and consistently delivers results.

Key Responsibilities

▸ Launch, optimize, and scale native advertising campaigns 

▸ Manage budgets of $50K+ monthly with a focus on profitability 

▸ Analyze performance data and identify growth opportunities 

▸ Structure campaigns for scalability and efficiency 

▸ Continuously test creatives, angles, and funnels 

▸ Collaborate with internal teams to drive performance growth

Requirements

✔ Hands-on experience with native traffic: Taboola, Outbrain, MSN, Mediago, etc. 

✔ Experience managing $50K+ monthly ad spend (current or recent) ✔ Proven ability to scale campaigns profitably 

✔ Experience in Crypto or CFD verticals 

✔ Strong analytical mindset and data-driven approach 

✔ Advanced English — Tier-1 / Tier-2 markets 

✔ Experience with cloaking systems — a plus

Compensation

💰 Competitive base salary + performance-based bonuses 

🚀 High earning potential — top performers earn $15K–$50K/month

How to Apply

Be ready to share:

📊 Real campaign performance data 

💵 Budget levels and scaling strategies 

⚙️ Optimization approach and decision-making logic

👉 We prioritize candidates who can demonstrate real, measurable results at scale.

We're looking for a System Administrator to join our IT team. The role is open to candidates at different experience levels. What matters most is a solid foundation, a problem-solving mindset, and genuine interest in the work. 

You'll be part of a stable, supportive environment with real mentoring available and room to grow. 

Must-have requirements: 

• Windows and/or macOS administration 
• Microsoft 365 and Entra ID (users, groups, licenses) 
• Microsoft Intune (MDM — device enrollment, compliance, app deployment) 
• Networking basics (DNS, DHCP, VPN) 
• Security fundamentals (MFA, Conditional Access, endpoint protection) 
• English B2 or higher 
• Strong communication skills with the ability to explain technical issues to non-technical users 
• Analytical thinking and a structured approach to troubleshooting 
• Ability to prioritize and manage multiple tasks simultaneously 
• Proactivity and ownership 

Nice-to-have: 

• Linux server administration 
• PowerShell or Bash scripting 
• Microsoft Defender, Azure DevOps, Cloudflare 
• MDM beyond Intune (Jamf, Mosyle) 
• Automation tools (Power Automate, n8n) 

Responsibilities: 

• Resolve IT incidents and requests reported by employees 
• Manage user accounts, groups, and access in Microsoft Entra ID and M365 Admin Center 
• Enroll and maintain devices using Microsoft Intune (MDM) 
• Support access management — onboarding/offboarding, permissions, licensing 
• Monitor systems, manage backups, and troubleshoot network issues 
• Automate repetitive tasks using PowerShell and/or Bash 

Ascendix offers you:

Healthcare:

• 20 paid vacation
• 5 paid sickness

Career and professional growth:

• Remote cooperation
• Career development and professional growth
• Technical performance reviews and 360 Evaluation
• Collaboration with a personal Direct Manager, Technical leads, and mentors

Learning and Development:

• Udemy and Pluralsight subscription
• Internal knowledge-sharing opportunities

Corporate spirit:

• Online and offline events & team-buildings
• Friendly and supportive atmosphere
• Open management

Role Overview

Employment Type: Full-time

Duration: Long-term

Location: Poland (Preferably Krakow) – Remote/Hybrid options available

Compensation: Competitive (Based on experience / Rates to be discussed)

About the Role

We are seeking a highly skilled and experienced Senior Ethereum / Web3 Developer to join our core engineering team. In this role, you will delve deep into blockchain infrastructure, protocol design, and transaction mechanics. You will be responsible for building, optimizing, and maintaining robust backend and Web3 systems that interact directly with the Ethereum ecosystem at a foundational level.

If you are passionate about the inner workings of the mempool, MEV, and high-performance Web3 infrastructure, this is the perfect opportunity for you.

Key Responsibilities

Design, develop, and maintain secure, high-performance Web3 backend systems and infrastructure.

Optimize transaction execution, manage mempool interactions, and implement MEV (Maximal Extractable Value) strategies.

Interface with blockchain nodes, validators, and builders to ensure seamless protocol operations.

Integrate and interact with complex DeFi protocols, ensuring deep technical alignment with smart contract logic.

Collaborate with cross-functional teams to architect scalable, resilient, and secure blockchain solutions.

Requirements

Experience: 5+ years of professional software engineering experience.

Web3/Blockchain: Strong, proven experience with Ethereum and Web3 technologies.

Infrastructure Knowledge: Deep understanding of blockchain infrastructure, including Transactions, Mempool mechanics, MEV, and the Validator/Builder pipeline.

DeFi Expertise: Hands-on experience working with DeFi protocols.

Backend Mastery: Exceptional backend engineering skills with a focus on performance, concurrency, and security.

Nice to Have (Bonus Points)

Trading Systems: Background in Algorithmic Trading, High-Frequency Trading (HFT), Crypto Trading, or Market Making.

Languages & Smart Contracts: Proficiency in Solidity (Smart Contracts), Rust, Go, or C++.

MEV Ecosystem: Experience as a Block Builder or Searcher.

DeFi Specialization: Deep knowledge of Lending Protocols and DeFi Risk Systems.

Ідеально для тих, хто прагне:

• Контролювати операції з обробки платежів;
• Забезпечувати безперебійну роботу та доступність способів оплати;
• Виявляти, досліджувати та передавати проблеми, пов'язані з платежами, відповідним постачальникам та внутрішнім командам;
• Координувати дії зі службою підтримки клієнтів, маркетингу та іншими зацікавленими сторонами щодо запитів на обробку платежів.

Досвід, який стане твоєю перевагою:

• 3+ роки досвіду роботи Billing/Payments менеджером або на схожій посаді в онлайн-платежах;
• Впевнена робота з цифрами та обробка фінансової/транзакційної інформації;
• Досвідчений користувач Excel та іншого програмного забезпечення MS Office;
• Гарне розуміння технічної інтеграції, воронок та потоків онлайн-платежів;
• Досвід письмового та усного спілкування з іноземними клієнтами або партнерами;
• Гарне розуміння платіжних та транзакційних систем та послуг.

Ми цінуємо:

• Увага до деталей;
• Багатозадачність, швидке виконання завдань;
• Високий рівень комунікативних навичок;
• Хороший командний гравець;
• Здатність до самостійної роботи та прийняття рішень щодо розподілу платежів.

Наші клієнти пропонують конкурентні переваги для підтримки вашого професійного та особистого зростання, зокрема:

• Орієнтація на здоров’я та добробут;
• Глобальне медичне страхування;
• Можливості для зростання;
• Програми бенефітів (компенсація спорту / стоматології / психолога тощо);
• Бонуси за досягнення результатів;
• Динамічне робоче середовище.

English version:

Perfect for those who aim to:

• Oversee payment processing operations within the assigned market;
• Ensure the smooth performance and availability of payment methods;
• Identify, investigate, and escalate payment-related issues to relevant providers and internal teams;
• Coordinate with customer support, marketing, and other stakeholders on payment processing requests and inquiries.

Experience you’ll need to bring:

• 3+ years as a billing/payments manager/specialist or similar role in online payments;
• Confident in dealing with numbers and processing of financial/transactional information;
• Advanced Excel and other MS Office software user;
• Good understanding of online payments technical integrations, funnels, flows;
• Experience in written and oral communication with foreign customers or partners;
• Good understanding of payment and transactional systems and services.

It's a perfect match if you have those personal features:

• Attention to details;
• Multitasking, quick task execution;
• High level of communication skills;
• Good team player;
• Ability to perform autonomy and take decisions on payment distribution.

Our clients offer competitive benefits to support your professional and personal growth, including: 

• Health & Wellness Focus;
• Global Medical Coverage;
• Growth Opportunities;
• Benefits Programs (compensation for the gym/stomatology/psychological service & etc.);
• Performance-Driven Rewards;
• Dynamic Work Environment.

What you'll own

Strategy & media planning

Build and update performance strategy across Meta and Google. Own media plans with forecasted budget, reach, CPC/CPA, ROMI, and revenue contribution.

Campaign launch & optimisation

Set up, run, and continuously optimise campaigns in Meta Ads and Google Ads. Key metrics: CPC, CPA, ROMI, ROAS, offline revenue, GMB-driven store traffic.

Navigating platform restrictions

Plan and run ads within Meta/Google policies for sensitive categories (cannabis, CBD, wellness). Work with CMO and legal to prevent bans and keep accounts healthy.

Creatives & hypothesis testing

Write briefs for designers, test offer × segment × format × placement combinations, and coordinate with brand and SMM teams.

Analytics & attribution

Configure GA4, pixels, UTMs, QR codes, promo codes, and offline conversions. Report monthly and quarterly on ROMI by channel, cost per store visit, and impact on new vs. repeat visits.

Requirements

- 3+ years in performance marketing / media buying with a focus on Meta Ads and Google Ads

- Proven experience with offline businesses — retail, HoReCa, clinics, fitness, wellness — where offline revenue matters as much as online leads

- Ability to build and optimise a full funnel — from impression to store visit and purchase

- Solid hands-on skills: Meta Ads Manager, Google Ads, GA4, basic GTM / event & conversion setup, Excel or Google Sheets (pivot tables, basic analytics)

- Comfortable working under platform restrictions — you don't burn out every time an ad gets rejected

- English Upper-Intermediate or higher (platform interfaces, support, working with English-language creatives and audiences)

About the Role
We are looking for a German-speaking VIP Manager to build strong relationships with high-value players and drive retention across European markets. The successful candidate will be responsible for delivering a personalized VIP experience, increasing player engagement, and maximizing player lifetime value.

Responsibilities

• Build and maintain relationships with VIP players.
• Provide personalized support and account management.
• Increase retention, loyalty, and repeat deposits.
• Reactivate inactive players and identify upselling opportunities.
• Monitor player behavior and performance metrics.
• Coordinate with internal departments to ensure exceptional customer experience.
• Achieve retention and revenue KPIs.

Requirements

• Fluent German (C1-C2) and English.
• Experience as a VIP Manager, Retention Manager, Account Manager, or similar customer-facing role.
• Strong communication and relationship-building skills.
• Customer-focused and sales-oriented mindset.
• Experience working with CRM systems and performance metrics.
• Ability to work independently in a remote environment.

Nice to Have

• Experience in iGaming, Gambling, Betting, Online Casino, or related industries.
• Experience managing VIP segments across multiple EU markets.

What We Offer

• Competitive salary package (Base Salary + Performance Bonus).
• Fully remote position.
• International and fast-growing environment.
• Career development opportunities.
• Long-term cooperation and growth potential.

About RiskSeal

RiskSeal is an innovative startup focused on providing cutting-edge risk management solutions in the fintech industry. Trusted by top fintech providers globally, RiskSeal is dedicated to developing highly scalable data collection and data processing tools that drive smarter and faster credit risk decisions. As a growing company, we thrive on creativity, collaboration, and the excitement of tackling new challenges.

Job Description

We are looking for a motivated and proactive DevOps Engineer to join our growing team. You will work closely with developers and other DevOps engineers to build, manage, and improve our cloud infrastructure and CI/CD processes. This is a great opportunity to gain hands-on experience with modern DevOps tools and practices while helping shape the future of our infrastructure.

Key Responsibilities and Skills

• Manage and automate cloud infrastructure using Pulumi (Python). Experience with Google Cloud Platform is preferred, but candidates with strong AWS, Azure, Oracle Cloud, or similar cloud backgrounds and willingness to switch to GCP are encouraged to apply.
• Maintain and optimize CI/CD pipelines using GitHub Actions with reusable workflows
• Deploy and manage Kubernetes workloads via GitOps using ArgoCD
• Configure and maintain VMs using Ansible for specialized workloads 
• Support multi-region infrastructure across
• Manage DBs like MySQL and Clickhouse
• Monitor infrastructure health using Prometheus, Grafana, and custom exporters
• Troubleshoot production issues and ensure system reliability across different environments
• Implement and maintain security policies using Cloud Armor and IAM
• Experience with bare-metal infrastructure and on-premises environments.
• Support developers with infrastructure-related needs and improvements

What We Offer

• A creative and dynamic work environment with minimal bureaucracy, fostering innovation and collaboration
• Support in your development as a specialist — you can always turn to anyone, and your question will never remain unanswered
• Hands-on experience with production-grade multi-region GCP infrastructure
• Opportunity to work with modern DevOps practices: IaC (Pulumi), GitOps (ArgoCD), reusable CI/CD pipelines
• Competitive salary and benefits package
• Flexibility in work hours and location

Account Manager (Arabic Speaking)
 

About the Role

We are looking for an Arabic-speaking Account Manager to join our team and work closely with partners across international markets. The role focuses on onboarding, supporting, and developing partner accounts while helping them achieve stronger performance and long-term growth.

Responsibilities

• Manage and develop relationships with existing partners.
• Onboard new partners and guide them through all stages of cooperation.
• Analyze partner performance and identify growth opportunities.
• Provide recommendations and support to improve key metrics.
• Resolve partner issues and ensure a high level of satisfaction.
• Monitor performance data and prepare reports.
• Collaborate with internal teams to optimize partner results.

Requirements

• Fluent Arabic and English (written and spoken).
• Experience in Account Management, Partner Management, Customer Success, Affiliate Management, or a similar role.
• Strong communication and negotiation skills.
• Analytical mindset and ability to work with data.
• Experience with Google Sheets / Excel.
• Ability to work in a fast-paced environment and manage multiple priorities.

Nice to Have

• Experience in Gambling, Betting, iGaming, Affiliate Marketing, or Digital Marketing.
• Additional languages are a plus.

What We Offer

• Competitive salary (Fixed Salary + KPI Bonus).
• Full-time position.
• Remote format.
• International team and professional growth opportunities.
• Training and onboarding support.

We’re building a cross-browser Fingerprint SDK and a high-performance backend for fraud detection and risk analysis. We’re looking for a Software Engineer who enjoys working close to the browser, handling large-scale data, and solving non-trivial engineering problems.

What You’ll Work On

• Design, develop and maintain a cross-browser Fingerprint SDK using Vanilla JavaScript/TypeScript, focused on performance, accuracy, and resilience against ad blockers and privacy restrictions
• Build backend services with Node.js (Express) to process and analyze large volumes of collected data
• Work with ClickHouse for analytical workloads and MySQL for transactional data
• Design and optimize raw SQL queries for high-performance data access

• Contribute to fraud detection and risk analysis systems by identifying patterns and anomalies in data

   

What We’re Looking For

• 7+ years of experience with JavaScript/TypeScript and raw Node.js (Express)
• Strong experience with JavaScript in the browser
• Experience writing and optimizing raw SQL queries
• Familiarity with high-volume data processing or analytics systems

• Bonus: experience with fingerprinting, anti-fraud systems, or cybersecurity

   

Nice to Have

• Experience dealing with ad blockers, tracking prevention (Safari/Firefox), or similar constraints
• Background in security, fraud detection, or risk analysis

What We Offer

• A collaborative and dynamic work environment with minimal bureaucracy, allowing for quick decision-making and efficient workflows.
• Opportunities for professional growth and development.
• The chance to work on cutting-edge technologies and challenging projects.
• Competitive salary and benefits package.
• Flexibility in work hours and location.

Data is at the core of every product decision we make. In this role, you’ll help shape and scale the data ecosystem behind products used by millions of users across international markets. You’ll work on high-volume data platforms, build reliable pipelines, and create the foundation that enables analytics, business intelligence, and data science teams to make fast, data-driven decisions. This is an opportunity to solve complex engineering challenges, optimize large-scale data systems, and directly influence the way data powers our products and business growth

In this role, you will
 

• Design and develop scalable, cloud-native data architectures in BigQuery, ensuring optimal performance, maintainability, and cost efficiency
• Build, automate, and maintain ETL/ELT pipelines using modern data stack tools and custom solutions
• Create and optimize business-critical data marts, aggregations, and analytical datasets for reporting, dashboarding, and product insights
• Implement data quality frameworks, monitoring systems, logging, and alerting mechanisms to ensure data reliability
• Continuously improve performance, scalability, and cost efficiency of production data infrastructure
• Partner closely with Data Science teams to build reliable data services, infrastructure, and pipelines supporting machine learning and advanced analytics initiatives
• Collaborate with product, analytics, and engineering teams to define and deliver scalable data solutions across the organization
  
  It’s all about you
   
• 3+ years of experience as a Data Engineer working with large-scale data platforms and high-volume datasets
• Strong expertise in data modeling, data warehousing concepts, and analytical data architecture design
• Proven experience designing and developing complex ETL/ELT workflows following BI and data engineering best practices
• Hands-on experience with BigQuery, including partitioning, clustering, query optimization, and cost management
• Strong SQL skills with the ability to write and optimize complex analytical queries using Google SQL
• Proficiency in Python and data processing libraries such as Pandas and PySpark
• Experience working with ClickHouse, including architecture understanding, performance optimization, and migration approaches
• Solid knowledge of Google Cloud Platform services, including Cloud Storage, Pub/Sub, DataForm, IAM, and service accounts
• Experience with Git, CI/CD practices, automated deployments, and environment management for data workflows
• Strong understanding of monitoring, logging, data validation, and production-grade data quality practices
• Excellent analytical thinking, problem-solving skills, and ability to work independently in a fast-paced environment
• Strong communication and collaboration skills with both technical and non-technical stakeholders
• Understanding of product metrics, experimentation frameworks, and data-driven decision making
• 2+ years of previous Software Engineering experience
• Experience optimizing storage and compute resources to improve infrastructure efficiency and reduce operational costs
• Experience integrating data platforms with BI tools such as Tableau or Looker
  
  Would be a plus
   
• Familiarity with supporting machine learning workflows and data infrastructure for Data Science teams
• Experience working with AI-powered development tools, including Claude Code, Claude Agents, or similar AI-assisted engineering solutions
  
  What we offer
• Care and support: 
• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Maternity Recovery Support Allowance
• Financial and legal support
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   
• Comfortable working environment:
• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
  
  Investment in your future:
• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
   
• Hiring process
• Intro call
• Technical interview
• Final  interview
• Reference check
• Offer
   

Sigma Software is looking for a Project Manager to join our Embedded & IT Support business unit. We are experiencing in the following domain areas:

— Smart Home & Smart City
— Connectivity & IoT
— Embedded systems for (Consumer Electronics, Industrial Automation, Energy, HVAC)
— Technical support
— DevOps services
— Atlassian partner products, integrations, and migrations

Why join us? In this role, you will be driving both embedded and technical support initiatives, focusing on high-class delivery and working in a multi-cultural environment in a team of real professionals.

Requirements

• At least 4 years of commercial experience in project management
• Strong knowledge of project management processes, methodologies, and tools
• Proven risk management and strong leadership skills
• Excellent negotiation and problem-solving abilities
• Experience managing cross-cultural teams
• Hands-on experience driving the adoption of AI practices across projects
• Excellent communication and presentation skills to communicate effectively with customers and project teams
• Upper-Intermediate English or higher
• Experience in embedded projects will be a plus

Responsibilities

• Plan, manage, and monitor project execution, ensuring on-time delivery within budget
• Act as the customer’s trusted partner, developing relationships and identifying additional service opportunities and business insights
• Tailor project delivery models to match customer needs and apply best project management practices
• Conduct portfolio risk analysis, proactively manage risks, and communicate effectively with stakeholders
• Be a people manager, execute the company’s people management practices, including hiring, onboarding, performance evaluation, and retention strategies
• Implement best practices and tools for project execution and management
• Drive continuous improvement through lessons learned and project achievements

Start: asap
Duration: long-term
Location: any
English: B2

Summary
We are looking for a senior GCP Data Engineer / Data Architect to lead and execute an on-premise GCP data migration project.

This is a hands-on data-focused role, not a classic DevOps/Kubernetes role.

Main responsibilities:
* Lead and implement the migration of data workloads from on-premise infrastructure to GCP
* Design and build GCP data lake / lakehouse architecture
* Work hands-on with GCP data services such as BigQuery, Dataproc, Cloud Storage, Spark, and related tools
* Design and implement scalable data pipelines and data processing flows
* Handle data ingestion, storage, security, reliability, and cost optimization
* Work independently with the existing technical team and drive technical decisions

Required experience:
* Strong hands-on GCP data engineering experience
* BigQuery, Dataproc, Spark, and Cloud Storage
* Data lake / lakehouse architecture
* On-premise to cloud migration experience
* Ability to lead technical decisions and work independently

Nice to have:
* Terraform / Infrastructure as Code
* Dataflow, Pub/Sub, Cloud Composer / Airflow
* GCP IAM, networking, monitoring, and security

Full-time availability is preferred.
Please apply only if you have real hands-on experience with GCP data platforms and data migration projects.