Jobs at Djinni

Role Overview

We are looking for a Senior Email Marketing Manager to own our newsletter portfolio, driving engagement, retention, deliverability, and revenue.

You will manage 7–10 newsletters, working closely with writers and designers to optimize content, subscriber experience, and commercial performance. This is an individual contributor role with the opportunity to build and lead a team as the portfolio grows.

Key Responsibilities

• Own the strategy, publishing, and optimization of multiple newsletters.
• Improve key performance metrics, including open rate, CTR, subscriber retention, and revenue.
• Optimize subject lines, content, layouts, CTAs, and publishing schedules.
• Develop subscriber lifecycle, segmentation, and re-engagement campaigns.
• Own email deliverability, including sender reputation, domain health, authentication (SPF, DKIM, DMARC), IP management, and inbox placement.
• Monitor list quality, suppression, and hygiene to maintain healthy databases.
• Optimize newsletter monetization through advertising, sponsorships, and affiliate placements.
• Conduct A/B tests and analyze campaign performance to improve results.
• Ensure all campaigns meet editorial, branding, and quality standards.
• Collaborate with writers, designers, and internal stakeholders to deliver high-quality newsletters.

• Build scalable processes, documentation, and reporting to support portfolio growth.

   

Requirements

Must Have

• 5+ years of experience in email marketing or newsletter management(managing email campaigns from 100 K each).
• Experience managing high-volume email programs or multiple newsletters.
• Strong understanding of email KPIs, segmentation, automation, and lifecycle marketing.
• Hands-on experience with email deliverability, sender reputation, authentication, and inbox placement.
• Experience optimizing newsletter engagement and monetization.
• Strong analytical, organizational, and project management skills.
• Excellent QA skills and attention to detail.
• Experience using AI tools to improve marketing workflows.
• English proficiency at C1 level or higher.

Nice to Have

• Experience with Substack, Ghost, or similar email platforms.
• Experience with sponsorship, affiliate, or advertising monetization.
• Background in digital publishing or content-led growth.
• Familiarity with email validation tools such as NeverBounce or ZeroBounce.

We're looking for someone who:

• Takes ownership and works independently.
• Thinks strategically and makes data-driven decisions.
• Has a strong commercial mindset.
• Builds scalable processes and continuously improves them.
• Collaborates effectively across teams.
• Pays close attention to detail and quality.
• Thrives in a fast-paced environment.

What We Offer

Professional Growth

• International and multicultural environment.
• Career development opportunities.
• Learning resources and corporate library.
• Opportunity to work with a high-performing team.
• Access to modern tools and AI technologies.

Benefits

• Competitive salary.
• Performance bonuses.
• 21 paid vacation days.
• 14 paid sick leave days.
• Work-life balance.
• Team events and activities.

Working Environment

• Remote or hybrid work.
• Modern office in Warsaw.
• Complimentary snacks and drinks.
• Friendly and supportive team.

We Look Forward to Meeting You!

If you're passionate about building high-performing newsletters and driving measurable business growth through email marketing, we'd love to hear from you.

Who We Are

PAR Retail, with its Open Commerce® product suite and patent pending Wallet Steering® System, empowers Convenience & Fuel Retailers to gain more share of wallet and customer lifetime value than possible with any other solution provider. PAR Retail’s unified Open Commerce product suite consists of: Activate for Intelligent 1:1 Loyalty, Transact for Contactless Commerce, and Experience for Cross-Channel Customer Experiences. PAR Retail’s solutions are supported by a set of subscription-based program management services and are contractually backed by its 1.5X Performance Guarantee.

Responsibilities & Activities

• Build and maintain automated tests for Mobile, Web, and Backend applications;
• Analyse test results, investigate failures, and help drive issues to resolution;
• Collaborate with developers and product teams to ensure high-quality releases;
• Research and evaluate new automation tools, technologies, and industry best practices;
• Use AI-powered tools to accelerate test automation development and maintenance;
• Identify opportunities to automate repetitive QA and engineering workflows.

Experience & Skills You’ll Need

• Proficiency in TypeScript/JavaScript, including experience developing and maintaining automated test frameworks;
• Hands-on experience with Playwright, Appium, Detox, WebdriverIO, or similar automation frameworks;
• Experience working with CI/CD pipelines and automated testing practices;
• Practical experience using AI development tools such as Claude Code, GitHub Copilot or similar platforms;
• Experience using AI to create, maintain, and improve automated test coverage;
• Ability to leverage AI agents to increase productivity and automate routine engineering tasks;
• Strong communication, collaboration, and problem-solving skills;
• Highly proactive, self-driven, and comfortable taking ownership of initiatives with minimal supervision;
• Load and performance testing experience is a plus.

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Flexible working hours;

- A unique and friendly environment where everyone can explore and learn new technologies.

Про проєкт

Шукаємо сильного C++ розробника для розробки та розвитку власного браузера на базі Chromium.

Проєкт пов’язаний з Chromium, browser automation, browser fingerprinting, web security та низькорівневою роботою з браузерним середовищем.

Основні задачі

• Розробка та підтримка власного Chromium fork.
• Збірка, оновлення та підтримка Chromium через GN / Ninja.
• Робота з Blink, V8, Browser Process, Renderer Process та іншими компонентами Chromium.
• Модифікація browser logic та внутрішніх API.
• Інтеграція C++ та JavaScript.
• Робота з browser fingerprinting та browser environment.
• Дослідження Web API та поведінки сучасних браузерів.
• Робота з HTTP/HTTPS, TLS, Headers, Cookies, Proxy та networking.
• Робота з User-Agent, Client Hints, Referer, Viewport, WebGL, Canvas, WebRTC, WebGPU.
• Оптимізація performance, memory usage та stability.
• Робота з multithreading та IPC.
• Аналіз та вирішення складних технічних задач на рівні Chromium.
   

Вимоги

• Від 2 років практичного досвіду роботи з anti-detect браузерами.
• Впевнене знання C++.
• Досвід роботи з великими C++ codebase.
• Практичний досвід роботи з GN / Ninja.
• Розуміння архітектури Chromium або інших browser engines.
• Розуміння Blink, V8, multi-process architecture та IPC.
• Хороше знання JavaScript.
• Глибоке розуміння HTTP/HTTPS, TLS та browser networking.
• Розуміння принципів browser fingerprinting.
• Розуміння User-Agent, Client Hints, Referer, Cookies, Proxy, Viewport, WebGL, Canvas, WebRTC та WebGPU.
• Досвід роботи з Linux або Windows.

Ми пропонуємо

• Віддалена робота.
• Довгостроковий проєкт з цікавими технічними задачами.
• Конкурентна заробітна плата.
• Оплачувана відпустка та лікарняні.
• Мінімум бюрократії та максимум технічної свободи.

N-iX  is looking for an experienced Senior Data Scientist with a strong focus on AI Engineering. The role involves designing and delivering production-ready AI solutions for the insurance industry, with a particular emphasis on Agentic AI, LLMs, RAG pipelines, and Computer Vision.

Key Responsibilities:

• Design and develop autonomous AI agent systems for the insurance domain
• Build production-ready AI solutions using:
  • Multi-Agent Systems
  • Large Language Models (LLMs)
  • Retrieval-Augmented Generation (RAG)
  • Computer Vision
• Research, evaluate, and implement state-of-the-art AI technologies
• Develop scalable AI products for international markets
• Collaborate with a team of Data Scientists and AI Engineers
• Take AI solutions from architecture and proof of concept through production deployment
• Participate in building proprietary AI models for the insurance industry

Required Skills:

• 5+ years of commercial experience as a Data Scientist / AI Engineer
• Strong Python development skills
• Hands-on experience with:
  • Machine Learning
  • Deep Learning
  • Generative AI
  • LLMs
  • RAG architectures
  • AI Agent frameworks
• Experience building production AI systems
• Solid software engineering background
• Experience with data analysis and AI product development
• Degree in Computer Science/Data Science/Mathematics/Physics/Engineering or equivalent technical background
• Upper-intermediate+ English level 
• Strong analytical thinking, proactive mindset
• Ability to design scalable AI solutions
• Ability to explain complex technical concepts
• Independent and structured way of working
• Team player

Nice to Have:

• Experience within the insurance industry
• German or Spanish language skills

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

* benefits package is not applicable for freelancers

Why this role exists:

This role exists to design, build, and maintain streaming data solutions based on Apache Kafka and related technologies, ensuring reliable data processing, integration, and testing of streaming applications.

What you’ll drive:

Streaming pipelines & data flow

• Build and maintain data pipelines using Apache Kafka, including topics, partitions, and consumer group tuning.
• Implement and manage Kafka Connect source and sink connectors for integrations.

Streaming application development

• Design and develop stateful streaming applications using Kafka Streams or Flink with Java (and Scala where applicable).
• Ensure data consistency and schema evolution using Schema Registry (Avro).

Quality & testing

• Write and maintain unit and integration tests for streaming topologies.

What makes you a GR8 fit:

Must-have

• 3+ years of experience in back end.
• Commercial experience in software engineering with strong proficiency in Java (Scala is a plus).
• Understanding of Apache Kafka architecture and internals.
• Experience working with Apache Flink.
• Experience with Schema Registry and schema evolution strategies.
• Knowledge of serialization formats such as Avro and JSON.
• Experience using SQL for processing large datasets.
• Upper-intermediate or higher level of English.

Nice-to-have

• Experience running Kafka and/or Flink on Kubernetes.
• Familiarity with monitoring tools such as Prometheus and Grafana for streaming metrics.
• Understanding of stream processing semantics.
• Experience with CI/CD pipelines for streaming applications.

Founded in 2020, Iterasec has grown into one of the leading penetration testing companies in Ukraine and Poland. We specialize in high-impact and in-depth security testing, from web and mobile applications to complex infrastructures, IoT, automotive systems, networks, and cloud environments. Our clients are fast-moving startups as well as Fortune 500 giants and world-renowned automotive and cloud companies.

We’re looking for a talented Sourcer or Lead Generation Manager, responsible for prospecting, researching, creating lead databases and running LinkedIn campaigns.

This is a junior–mid operational role. No hard selling. No closing. This is a pipeline-building and database-heavy position.

Responsibilities:

• Build and maintain prospect databases.
• Research target domain, companies, and decision-makers.
• Identify and qualify potential leads according to our Ideal Customer Profile (ICP).
• Prepare contact lists and data for outbound campaigns.
• Launch and manage LinkedIn outreach campaigns.
• Maintain data accuracy in CRM and lead generation tools.
• Schedule intro calls for the founder or partnership manager.

Requirements:

• 6+ months of experience in lead generation, or sourcing.
• Strong research and data management skills.
• Experience with LinkedIn, CRM systems, and prospecting tools.
• Discipline, attention to detail and strong organizational skills.
• Good written English (at least B1).
• Curiosity about technology and cybersecurity.
• Persistence without being pushy.

What we offer:

• Exposure to cybersecurity, offensive security, and advanced technical domains.
• Clear progression path: LeadGen/Sourcer → SDR → Partnerships.
• Competitive compensation for this role level.
• Flexible remote environment, professional growth, and autonomy.

About Us

We are make-it.run, an IT company with a cozy office in the center of Kyiv. We build websites and apps for clients around the world.

About the Role

We're looking for a friendly, organised person to help us run the company day to day.

No experience needed - we'll teach you everything. This is a great way to get into IT without being a programmer (but good way to become, our managers can easily grow in company and become developers). You'll get two weeks of personal training, and after that the team will always be there to help.

What You'll Do

This is not a job where you sit and do the same thing all day. Your days will be varied - a mix of organising, communicating, creating, and learning new things. 

Here's what your work will look like:

• You'll work side by side with the CEO. Day to day, the role looks a lot like being a personal assistant to the CEO and a bit like a project manager — helping keep the company and projects organised, making sure everything runs smoothly, nothing gets stuck, and the team can focus on their work. You'll quickly become someone everyone relies on.
• You'll help our company look great online. Like an SMM manager, you'll take care of how we present ourselves to the world - our website, our social media, our stories about the projects we build. You'll do this with the help of AI tools, and this is honestly the coolest part: we'll teach you to do things that usually only programmers can do, without writing a single line of code yourself.
• You'll explore and discover. Part of your time will go to research - looking for interesting information, new opportunities, and ideas that help the company grow. If you're naturally curious, you'll enjoy this a lot.
• You'll make our office a nice place to be. From little everyday things to bigger ideas - you'll help create a space where the whole team feels comfortable and happy to come to work.

Don't worry if some of this sounds unfamiliar - you'll grow into each of these step by step during your training, and nothing will land on you all at once.
 

Who We're Looking For

• Someone responsible, who can be trusted with money and documents.
• English at intermediate level or higher.
• Comfortable with a computer — everything else we'll teach you.
• Ready to work from our office in Kyiv.
   

What You'll Get

• the salary in $ depending on your skills, with room to grow.
• A real start in the IT industry and modern AI skills that are in demand everywhere.
• Personal training and support — you'll never be left on your own.
• Flexible mornings: start anytime between 9:00 and 11:00.
• A modern office on Pankivska Street and a small, friendly team.

ZentixSoft is looking for a Solution Architect! 🚀
 

Format: Full-Time Outstaffing, long-term engagement (12+ months).

💡 Why ZentixSoft?
 💸 Salary Review: A structured system of compensation reviews aligned with your engineering growth. 
⚖️ Work-Life Balance: Sustainable workflows with no senseless overtime, helping you keep your resource fully charged. 
🦾 Trust and Transparency: Zero micromanagement and no invasive time-trackers—we fully trust your professional autonomy. 
🎁 Gifts & Culture: Corporate gifts for holidays, birthdays, and a true team atmosphere where your voice always matters.
 

Our Perfect Match: 
1️⃣ Architecture Experience: Deep expertise in designing and evolving Modular Monolith Architectures and transitioning to cloud solutions. 2️⃣ Back-End & Messaging: Solid mastery of Java Spring Boot, caching strategies (Redis), and asynchronous messaging systems (ActiveMQ).
 3️⃣ Data & Infrastructure: Designing MySQL databases for high-load systems and hands-on experience with Kubernetes (K8s). 
4️⃣ Front-End Vision: Understanding of modern web architectures built with React / Next.js. 
5️⃣ Communication: Fluent English (B2+/C1) for direct alignment and strategic syncs with international stakeholders.
 

Project Details: ⏳ Duration: 12+ months (Full-time). 
🚀 Start: In 1 month.

ZentixSoft is looking for Tech Leads! 🛠️

Format: Full-Time Outstaffing, long-term project (12+ months).

💡 Why ZentixSoft? 
💸 Salary Review: A structured system of compensation reviews aligned with your engineering growth. 
⚖️ Work-Life Balance: Sustainable workflows with no senseless overtime, helping you keep your resource fully charged. 
🦾 Trust and Transparency: Zero micromanagement and no invasive time-trackers—we fully trust your professional autonomy. 
🎁 Gifts & Culture: Corporate gifts for holidays, birthdays, and a true team atmosphere where your voice always matters.
 

Our Perfect Match: 
1️⃣ Hands-on & Leadership: Strong technical background (Java + Frontend) combined with team mentoring, code reviews, and building CI/CD processes. 
2️⃣ Backend Core: Java Spring Boot, experience with Modular Monolith, message brokers (ActiveMQ), and caching (Redis). 
3️⃣ Frontend Core: Hands-on development experience with React / Next.js. 
4️⃣ Database & DevOps: Proficiency in MySQL query optimization and understanding deployments in Kubernetes. 
5️⃣ Communication: English level Upper-Intermediate (B2+) or higher.
 

Project Details: 
⏳ Duration: 12+ months (Full-time). 
🚀 Start: In 1 month.

We’re expanding our team and looking for an experienced TikTok Media Buyer to join us.

We're looking for someone who knows how to build, optimize, and scale profitable TikTok campaigns in the iGaming vertical. If you're already managing daily budgets of $1,000+, have recent gambling experience, and understand how to drive volume across different GEOs — we'd love to connect.

We are a fast-moving team with quick decision-making, zero unnecessary bureaucracy, and a strong focus on performance and growth.

What’s important for us:

• Hands-on experience in iGaming / Gambling;
• Strong expertise in TikTok Ads;
• Experience working with spend-based deals;
• Current daily spend of $1,000+;
• Proven and active TikTok gambling cases within the last 3 months;
 

What we offer:

• Competitive base salary + performance-based bonus system;
• All resources and tools required for launching and scaling campaigns;
• Fully remote work format;
• Freedom in decision-making without micromanagement;
• Direct communication and fast implementation of ideas;
• Opportunity to grow into a Team Lead role.

About us:

• 80+ people in the in-house team;
• Fast-paced environment with direct communication and no unnecessary bureaucracy;
• Focused exclusively on the iGaming vertical and long-term growth.

If you have strong TikTok experience in gambling, know how to scale campaigns profitably, and want to be part of a team where your expertise directly impacts growth — we'd love to hear from you.

We’re expanding our team and looking for an experienced In-App Media Buyer to join us.

We’re looking for someone who is already working with a spend-based model, manages daily budgets of $1,000+, and knows how to buy and scale In-App traffic across multiple GEOs.

We are a fast-moving team with quick decision-making, zero unnecessary bureaucracy, and a strong focus on results.

What’s important for us:

• Hands-on experience in iGaming / Gambling;
• Strong expertise in In-App traffic acquisition;
• Practical experience with Unity Ads and Moloco;
• Experience working with spend-based deals;
• Current daily spend of $1,000+;
• Strong understanding of campaign optimization and scaling strategies;
• Proven and active gambling cases within the last 3 months;
 

What we offer:

• Competitive base salary + performance-based bonus system;
• All resources and tools required for launching and scaling campaigns;
• Fully remote work format;
• Freedom in decision-making without micromanagement;
• Opportunity to grow into a Team Lead role.

About us:

• 80+ people in the in-house team;
• Fast-paced environment with direct communication and no unnecessary bureaucracy.

If you have solid experience buying and scaling In-App traffic in the gambling vertical, are confident working with Unity Ads and Moloco, and know how to manage budgets efficiently, we'd love to hear from you.

We’re expanding our team and looking for an experienced Facebook Media Buyer to join us.

We’re looking for someone who is already working with a spend-based model, manages daily budgets of $1,000+, and knows how to buy and scale Facebook traffic across multiple GEOs.

We are a fast-moving team with quick decision-making, zero unnecessary bureaucracy, and a strong focus on results.

What’s important for us:

• Hands-on experience in iGaming / Gambling;
• Strong expertise in Facebook Ads;
• Experience working with spend-based deals;
• Current daily spend of $1,000+;
• Strong understanding of campaign optimization and scaling strategies;
• Proven and active Facebook gambling cases within the last 3 months.

What we offer:

• Competitive base salary + performance-based bonus system;
• All resources and tools required for launching and scaling campaigns;
• Fully remote work format;
• Freedom in decision-making without micromanagement;
• Opportunity to grow into a Team Lead role.

About us:

• 80+ people in the in-house team;
• Fast-paced environment with direct communication and no unnecessary bureaucracy.

If you have solid gambling experience, know how to manage budgets efficiently, and can scale Facebook campaigns profitably, we'd love to hear from you.

RISK inc: An International iGaming Company Pushing the Boundaries of Entertainment
 

Who We Are: An international iGaming company specializing in identifying and fostering the growth of high-potential entertainment markets. With 1000+ professionals in 20+ locations, we operate in 10 countries, serving over 300,000 customers.

Always Pushing the Boundaries? You Already Belong at RISK!

Our global-scale operations are based on strong internal expertise, analytics, and data research. We have expertise in iGaming operations (sports betting, online casino), digital and affiliate marketing, tech solutions, and data analytics.

We are looking for a Senior Product Manager to join our team.
 

Responsibilities:

• Manage and develop products across multiple brands and GEOs;
• Analyze user behavior, product funnels, and key business metrics;
• Identify product opportunities and bottlenecks through data, user research, and competitor analysis;
• Generate, validate, and prioritize product ideas that improve user experience and business results;
• Own initiatives from problem definition and requirements to release and post-launch analysis;
• Prepare clear product requirements, specifications, and user stories;
• Drive releases, identify blockers, and ensure tasks move forward;
• Work closely with CRM, Marketing, Analytics, Design, Content, and Technical teams;
• Participate in product roadmap planning and prioritization, bringing data-driven recommendations.
   

Requirements:

• 4+ years of Product Management experience, including hands-on experience with B2C products in iGaming;
• Strong understanding of online casino and/or sportsbook products, user journeys, and key metrics;
• Data-driven approach and experience evaluating product decisions through metrics, A/B tests, or alternative measurement methods;
• Strong ownership and ability to independently drive initiatives and remove blockers;
• Ability to work effectively in a fast-changing environment with multiple priorities;
• Strong technical understanding of platform capabilities, integrations, dependencies, and product constraints;
• Ability to balance user value, technical feasibility, and implementation effort when shaping product solutions;
• Fluent Ukrainian or Russian for internal communication;
• English - Intermediate or higher.
   

Will be a plus:

• Experience with Tableau or other BI tools;
• Experience with new market or product launches.
   

Our Benefit Cafeteria is Packed with Goodies:

• Children Allowance
• Mental Health Support
• Sport Activities
• Language Courses
• Automotive Services
• Veterinary Services
• Home Office Setup Assistance
• Dental Services
• Books and Stationery
• Training Compensation

• And yes, even Massage!

   

Ready to Take the Leap?

Join a team where every day is an opportunity to take a RISK and come out on top. Follow us on LinkedIn and Instagram, and let us be your hub for turning ambitious ideas and extraordinary solutions into reality.

Level: Middle Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours: EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

About the Client

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role

We are looking for a Middle-level Software Engineer to work on the core query engine of a large-scale distributed data platform. You will develop features across query planning, optimization, and execution, contribute to performance-critical components, and help evolve the platform's ability to process massive analytical workloads across heterogeneous data sources.

This is a systems-level, backend engineering role focused on distributed data processing internals — not application development or CRUD services.

Responsibilities

• Develop and maintain features across the query engine — planning, optimization, execution, and data access layers.
• Write high-quality, performance-conscious code in Java and/or C++.
• Work with SQL semantics, query plans, and execution operators over large-scale distributed data.
• Integrate with columnar formats, open table formats, and connectivity drivers used across the platform.
• Contribute to CI/CD pipelines and automated testing — participate in build, test, and release workflows in Jenkins.
• Deploy and validate work in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker.
• Debug complex issues spanning query planning, distributed execution, memory management, and I/O.
• Collaborate closely with US-based engineering teams on design reviews, code reviews, and technical decisions.

Required Qualifications

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Java or C++, with solid OOP and software design fundamentals. Candidates comfortable with both are especially valued.
• SQL & Data: Strong SQL skills and solid understanding of relational and analytical data systems, including query execution concepts.
• Data processing systems experience: Hands-on experience with data processing systems — query engines, distributed databases, ETL/ELT frameworks, or analytical platforms.
• Engineering experience: 3+ years in backend/systems software engineering.
• CI/CD & DevOps basics: Practical experience with Jenkins pipelines and modern development workflows.
• Containers: Working knowledge of Docker and basic Kubernetes (running workloads, debugging pods, kubectl fluency).
• Cloud: Comfortable operating in at least one major cloud (GCP, AWS, or Azure).
• Version Control: Confident with Git / GitHub workflows.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.

Desired Skills

• Experience with Apache Arrow (columnar in-memory format).
• Familiarity with Apache Calcite (SQL parsing, planning, optimization framework).
• Exposure to Gandiva or LLVM-based expression compilation.
• Experience with open table formats — Apache Iceberg, Delta Lake, or Hudi.
• Familiarity with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines (e.g., Presto, Trino, or similar).
• Understanding of query planning, optimization, and execution internals.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Experience with performance profiling and optimization of latency-sensitive systems.
  Please note: We can consider only candidates currently residing in the EU, EEA, or the UK.
  Please note: We can consider only candidates currently residing in the EU, EEA, or the UK

Level: Senior Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours: EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

About the Client

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role

We are looking for a Senior SDET to lead the design of automated test frameworks and testing strategy for a large-scale distributed data platform. You will own the quality of the query engine, connectivity layer, and backend services end-to-end — from framework architecture through CI/CD infrastructure across all major clouds — and mentor middle engineers on the team.

This is a data-heavy, backend-focused role. We are not looking for web/UI QA engineers — the work centers on validating distributed query execution, data correctness at scale, connectivity drivers, and backend microservices.

Responsibilities

• Architect, design, and evolve automated test frameworks in Python / pytest for backend services, REST APIs, and distributed data components.
• Define testing strategy for new features and platform components — coverage, risk assessment, and quality gates.
• Own end-to-end, integration, performance, and regression testing covering SQL query execution, data correctness at scale, and platform APIs.
• Lead performance and load testing efforts with JMeter, including workloads over JDBC / ODBC / Arrow Flight drivers.
• Design and validate large-scale data testing scenarios — query plans, result correctness across heterogeneous data sources, metadata consistency, and behavior under high concurrency.
• Own CI/CD test pipelines in Jenkins — architect, maintain, and continuously improve.
• Provision and manage test environments in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker; drive automation and reproducibility.
• Investigate complex, cross-layer failures and drive root-cause analysis with engineering.
• Mentor middle SDETs, review test designs, and set quality standards across the team.
• Partner with US-based development leads on shift-left practices, testability, and release readiness.

Required Qualifications

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Python, including pytest, with deep understanding of OOP, software design principles, and test framework architecture.
• SQL & Data: Advanced SQL skills and strong understanding of relational and analytical data systems, including query execution internals.
• Data-intensive testing experience: Demonstrated experience testing data-intensive systems — query engines, ETL/ELT pipelines, streaming platforms, or analytical databases. Candidates with only web/UI QA backgrounds are not a fit.
• Testing experience: 5+ years in backend/system test automation, with demonstrated ownership of test strategy and infrastructure.
• CI/CD & DevOps: Solid experience architecting and maintaining Jenkins pipelines and test environments.
• Containers & Orchestration: Strong working knowledge of Docker and Kubernetes (running workloads, debugging pods, deploying complex environments).
• Cloud: Hands-on experience with at least one major cloud (GCP, AWS, or Azure); exposure to more than one is a strong plus.
• Version Control: Confident with Git / GitHub workflows and code review practices.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.
• Leadership: Prior experience mentoring engineers, defining test strategy, or leading a QA/SDET function.

Desired Skills

• Deep experience testing REST APIs and backend microservices at scale.
• Hands-on with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines (e.g., Presto, Trino, or similar).
• Strong understanding of modern data lakehouse concepts, open table formats (Apache Iceberg), and data warehousing.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Performance testing with JMeter or comparable load-testing tools at production scale.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Deep understanding of query plan generation, query acceleration / materializations, and metadata integrity in distributed data systems.
• Prior experience leading a QA/SDET function in a data-platform or database engineering environment.
  Please note: We can consider only candidates currently residing in the EU, EEA, or the UK.