Senior Performance Test Engineer

🏢 Summary: Senior Full-Stack Developer role focused on architecting, designing, and delivering high-performance Java-based solutions for a scalable analytical platform. The position involves building core components, improving performance and non-functional aspects, and supporting back-end engineering initiatives. The role requires hands-on development across both back-end and front-end technologies. 🗂️ Requirements: 7+ years of professional software development experience, Fluency in Java and Spring, Strong knowledge of SQL and SQL databases, Experience with TypeScript and Angular, Experience building RESTful web services, Familiarity with Redis, Familiarity with ActiveMQ Artemis (JMS), Experience with Docker 📃 Skills: Java, Spring, SQL, TypeScript, Angular, Redis, ActiveMQ, Artemis, Docker, REST, JMS 🏢 Description: DataWalk is a high-tech software product company that brings the next level of technology to the world through a patent-based hybrid graph analytical platform. Our system is used by US Departments, Intelligence Agencies, and top Fortune500 companies to combat money laundering, fraud, human trafficking, terrorism or organized crime. If you are interested in making the world a safer place and leverage a unique business opportunity, please read further. We are looking for an experienced Senior Full-Stack Developer to join our Product Engineering teams. The position will play a significant role in architecting, designing, developing, and delivering high-performance Java-based software solutions that underpin our platform's stability, scalability, and efficiency. Responsibilities: Design and implement core components of the DataWalk platform. Identify, recommend, design and implement non-functional and performance improvements. Evaluate new technologies and their application to the business. Work with team members to conduct root cause analysis of issues, review code and/or design proper testing mechanisms. Support back-end engineering efficiency initiatives. Requirements: 7+ years of professional experience, preferably in a product-focused company. Fluency in Java, Spring, and SQL. Experience with TypeScript and Angular. Strong knowledge of SQL databases (preferably columnar databases) and experience with RESTful web services. Familiarity with Redis, ActiveMQ Artemis (JMS), and Docker. B2 English proficiency (for effective communication). Demonstrated high level of ownership and initiative (high agency). Ability to manage multiple priorities in a fast-paced environment. Excellent communication and collaboration skills. Nice to have: Kubernetes and Kubernetes API. Knowledge of/experience in graph analytics. Experience in the area of back-end performance measurement, analysis and improvements. We offer: Work in a high tech company with Polish-American work culture and an excellent development perspective. Work on a product based on a unique technology. Growth opportunities in a passionate team of professionals. Challenging and inspiring environment. Friendly atmosphere and attractive package of benefits (private healthcare, life insurance, multisport cards, training).

🏢 Summary: B2B Senior Test Engineer role focused on ensuring quality, reliability, and performance of Azure-based Data Hubs and data pipelines, with emphasis on automated testing and big data validation. The position involves building test frameworks, validating ETL workflows, and integrating testing into CI/CD processes. Work is hybrid with regular on-site presence in Warsaw. 🗂️ Requirements: Strong expertise in Python, Strong expertise in PySpark, Strong expertise in SQL, Experience with test automation frameworks, Experience with Azure Data Services (Databricks, Data Factory, Storage Accounts), Experience in testing big data pipelines and ETL workflows, Hands-on experience with CI/CD tools, Knowledge of data governance and data quality frameworks, Ability to work in Agile/Scrum environment 📃 Skills: Python, PySpark, SQL, Azure, Databricks, DataFactory, AzureDevOps, Jenkins, CI/CD, ETL, BigData, DevOps 🏢 Description: contract: B2B rate: 145 pln/h + VAT mode: 2x a month from the office, Warsaw As a Senior Test Engineer, you will be responsible for ensuring the quality, reliability, and performance of Data Hubs and data processing pipelines in Azure & Databricks. You will develop automated test frameworks, conduct regression testing, and validate large-scale data processing workflows. How you will get the job done ·       designing, developing, and maintaining automated test frameworks for data processing and orchestration. ·       conducting regression, performance, and scalability testing for data ingestion and transformation. ·       implementing data quality validation and anomaly detection in Azure-based data pipelines. ·       collaborating with Data Engineers and DevOps teams to integrate testing into CI/CD pipelines. ·       ensuring compliance with data security, governance, and privacy standards. ·       defining test strategies, best practices, and documentation for Data & AI solutions Skills and experience you will need ·       strong expertise in Python, PySpark, SQL, and test automation frameworks. ·       experience with Azure Data Services (Databricks, Data Factory, Storage Accounts). ·       proficiency in testing big data pipelines, distributed systems, and ETL workflows. ·       hands-on experience with CI/CD tools (Azure DevOps, Jenkins) and test automation. ·       strong understanding of data governance, quality frameworks, and monitoring tools. ·       excellent problem-solving skills and ability to work in Agile/Scrum environments. Nice to Have ·       experience with ML model validation and AI pipeline testing ·       familiarity with data lineage tracking and metadata management tools

🏢 Summary: Senior QA Automation & Performance Test Engineer role focused on designing, developing, and executing automated and performance test solutions to ensure quality, scalability, and reliability of complex software systems. The position involves owning non-functional testing activities, building automation frameworks, and optimizing application performance across web, microservices, and cloud environments. The role requires strong programming expertise and hands-on experience with enterprise-grade testing and monitoring tools. 🗂️ Requirements: Strong proficiency in Java, Strong proficiency in C, Experience with LoadRunner Enterprise, Experience with Selenium or Cucumber, Hands-on experience in automation testing across web, microservices, databases, and cloud applications, Experience with CI/CD pipelines, Experience building performance and load testing frameworks, Experience with logging and APM tools, Knowledge of Linux performance tuning, Knowledge of database optimisation techniques, Experience with WebSphere, Experience with Tomcat, Ability to analyse logs and database queries, Experience managing test and defect lifecycle in Agile and Waterfall 📃 Skills: Java, C, LoadRunner, Selenium, Cucumber, Gatling, Locust, AppDynamics, AppInsights, Splunk, Linux, SQL, WebSphere, Tomcat, CI/CD 🏢 Description: We are seeking a highly skilled Senior QA Automation & Performance Test Engineer to join our dynamic team. The ideal candidate will be responsible for designing, developing, maintaining, and executing automated and performance test scripts to ensure the quality, reliability, and scalability of our software products. This role requires a strong background in software development, test automation frameworks, performance testing, and a passion for delivering high-quality solutions. This position offers a flex-hybrid model of work, with 3 days per week working from the office located in Wroclaw or Krakow. Responsibilities Collaborate with cross-functional teams to understand software requirements and develop comprehensive test plans, cases, and scenarios Design, develop, and maintain automated and performance test scripts using industry-standard tools and frameworks Own and manage all non-functional testing activities, including performance, stress, load, and regression testing Continuously research and evaluate new testing technologies, tools, and methodologies to improve efficiency and effectiveness Advocate for best practices in testing and quality assurance, contributing to process improvement Develop custom tools and integrate with existing tools to increase engineering productivity Ensure quality, security, reliability, and compliance by testing both functional and non-functional requirements Coordinate test activities within the pod and across other test managers as required Enable and drive a culture of 'automation-first' in the QA space Perform in-sprint automation testing and build regression test suites Analyse errors using logs, database queries, legacy and Unix file systems, etc Expertly manage the complete test and defect lifecycle across agile and waterfall methodologies Generate test reports and share status across multiple levels Capacity planning and management of web, microservices, and mobile applications Performance monitoring and tuning of applications using tools like AppDynamics, AppInsights, Splunk Use quantitative methods to identify performance and throughput bottlenecks Work on large-scale migration projects for financial institutions’ core platforms Requirements Strong proficiency in programming languages such as Java and C Strong experience in LoadRunner Enterprise (2023 or earlier) Experience with test automation frameworks such as Selenium, Cucumber, or similar BDD frameworks Hands-on experience with automation testing for desktop, web, data services, microservices, database, ETL, cloud-based applications, middleware, and OS Experience with CI/CD pipelines Expertise in building frameworks for performance and load tests using tools like Gatling, Locust, LoadRunner Experience with logging and APM tools (AppDynamics, AppInsights, Splunk) Good understanding of Linux performance tuning and database optimisation techniques Experience with WebSphere and Tomcat application servers Strong analytical skills, proactive, detail-oriented, and comfortable working in dynamic, fast-paced environments Excellent communicator with strong written and verbal English skills We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Software Development Engineer in Test role focused on defining test strategy and building scalable automation for e-commerce and user experience platforms used by millions of customers. The position drives quality across complex web and backend systems, shaping automation architecture and CI/CD practices. It involves leading testing efforts and improving reliability of business-critical applications. 🗂️ Requirements: 6+ years of experience in software testing and test automation, Strong programming skills in Python, Java, JavaScript, Kotlin, or TypeScript, Experience designing and maintaining test automation frameworks, Extensive experience in UI and API test automation, Strong knowledge of CI/CD workflows and tools, Experience testing complex front-end and back-end systems, Experience working in Agile teams, Ability to lead testing efforts across teams 📃 Skills: Python, Java, JavaScript, TypeScript, Kotlin, REST, API, UI, Jenkins, CircleCI, GitHub, Git, CI/CD, Automation, E2E 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. They are now looking for a Senior Software Development Engineer in Test to join the Quality Engineering team, supporting the e-commerce and user experience platforms used by millions of customers worldwide. In this role, you will play a key part in defining test strategy, shaping automation architecture, and driving quality across complex systems. You will partner closely with engineering, product, and design teams, act as a quality leader within the organization, and mentor others to continually raise the bar for testing excellence. Projects you may work on: E-commerce and user experience platforms (web + backend, business-critical user journeys), Content and streaming applications, including media- and music-related systems, Key takeaways: Stack: JavaScript, TypeScript, Python, Java, Kotlin, REST APIs, UI & API automation frameworks, Jenkins, CircleCI, GitHub Actions, Git Salary: 19 000 PLN - 23 000 PLN gross on the Contract of Employment Working model : Hybrid - 3x weekly from the office Location: ul. Grzybowska, Warsaw Recruitment process : A call with Motife recruiter Interview with the Hiring Manager Interviews panel (live coding) Final meeting Responsibilities: Define and drive comprehensive test strategies across unit, integration, and E2E testing. Architect, build, and scale test automation frameworks for complex systems. Lead the adoption of best practices in testing, automation, and maintainability. Act as a quality owner for critical features, systems, and releases. Collaborate cross-functionally with engineering, product, design, and leadership teams. Mentor and coach engineers and SDETs on testing strategies and quality standards. Support and improve CI/CD pipelines to enable fast, reliable releases. Participate in release readiness, risk assessment, and long-term quality planning. Requirements: 6–8+ years of experience in software testing and test automation. Strong programming skills in one or more languages (Python, Java, JavaScript, Kotlin, TypeScript, etc.). Proven experience designing, architecting, and maintaining test automation solutions and frameworks for complex front-end and back-end systems. Extensive experience with UI and API test automation. Strong understanding of CI/CD workflows and tools like Jenkins, CircleCI, and GitHub Actions. Experience working in cross-functional Agile teams. Ability to work autonomously and lead testing efforts across teams. Excellent communication skills and a strong user-first mindset. Nice to have Experience with content, media, or streaming platforms. Experience leading cross-team or organization-wide quality initiatives. Experience acting as a release or quality lead. What we offer: 100% paid medical care, Multisport, Creative tax (KUP) Home office allowance MacBook Pro Apply now If you’re excited to shape the future of Android development in digital fitness and wellness, we’d love to hear from you! Please apply through our careers page with your CV in English.

🏢 Summary: Senior Software Development Engineer in Test role focused on defining test strategy and building scalable automation frameworks for e-commerce and user experience platforms used by millions of customers. The position drives quality across complex web and backend systems, leading automation architecture and CI/CD improvements. It involves close collaboration with cross-functional teams and ownership of end-to-end testing excellence. 🗂️ Requirements: 6–8+ years in software testing and test automation, Strong programming skills in Python, Java, JavaScript, Kotlin, or TypeScript, Experience designing and maintaining test automation frameworks, Extensive UI and API test automation experience, Strong knowledge of CI/CD workflows and tools, Experience testing complex front-end and back-end systems, Experience working in Agile teams, Ability to lead testing efforts across teams 📃 Skills: Python, Java, JavaScript, TypeScript, Kotlin, REST, APIs, UI, Automation, Jenkins, CircleCI, GitHub, Git, CI/CD, Agile 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. They are now looking for a Senior Software Development Engineer in Test to join the Quality Engineering team, supporting the e-commerce and user experience platforms used by millions of customers worldwide. In this role, you will play a key part in defining test strategy, shaping automation architecture, and driving quality across complex systems. You will partner closely with engineering, product, and design teams, act as a quality leader within the organization, and mentor others to continually raise the bar for testing excellence. Projects you may work on: E-commerce and user experience platforms (web + backend, business-critical user journeys), Content and streaming applications, including media- and music-related systems, Key takeaways: Stack: JavaScript, TypeScript, Python, Java, Kotlin, REST APIs, UI & API automation frameworks, Jenkins, CircleCI, GitHub Actions, Git Salary: 19 000 PLN - 23 000 PLN gross on the Contract of Employment Working model : Hybrid - 3x weekly from the office Location: ul. Grzybowska, Warsaw Recruitment process : A call with Motife recruiter Interview with the Hiring Manager Interviews panel (live coding) Final meeting Responsibilities: Define and drive comprehensive test strategies across unit, integration, and E2E testing. Architect, build, and scale test automation frameworks for complex systems. Lead the adoption of best practices in testing, automation, and maintainability. Act as a quality owner for critical features, systems, and releases. Collaborate cross-functionally with engineering, product, design, and leadership teams. Mentor and coach engineers and SDETs on testing strategies and quality standards. Support and improve CI/CD pipelines to enable fast, reliable releases. Participate in release readiness, risk assessment, and long-term quality planning. Requirements: 6–8+ years of experience in software testing and test automation. Strong programming skills in one or more languages (Python, Java, JavaScript, Kotlin, TypeScript, etc.). Proven experience designing, architecting, and maintaining test automation solutions and frameworks for complex front-end and back-end systems. Extensive experience with UI and API test automation. Strong understanding of CI/CD workflows and tools like Jenkins, CircleCI, and GitHub Actions. Experience working in cross-functional Agile teams. Ability to work autonomously and lead testing efforts across teams. Excellent communication skills and a strong user-first mindset. Nice to have Experience with content, media, or streaming platforms. Experience leading cross-team or organization-wide quality initiatives. Experience acting as a release or quality lead. What we offer: 100% paid medical care, Multisport, Creative tax (KUP) Home office allowance MacBook Pro Apply now If you’re excited to shape the future of Android development in digital fitness and wellness, we’d love to hear from you! Please apply through our careers page with your CV in English.

🏢 Summary: Senior Software Development Engineer in Test role focused on defining test strategy, building scalable automation frameworks, and driving quality across complex e-commerce and user experience platforms. The position involves leading testing efforts for web and backend systems, mentoring engineers, and improving CI/CD processes to ensure reliable releases. The role combines hands-on automation development with quality leadership in cross-functional Agile teams. 🗂️ Requirements: 6–8+ years of experience in software testing and test automation, Strong programming skills in at least one of: Python, Java, JavaScript, Kotlin, TypeScript, Experience designing and maintaining test automation frameworks for front-end and back-end systems, Extensive experience in UI test automation, Extensive experience in API test automation, Strong knowledge of CI/CD workflows and tools, Experience working in Agile teams, Ability to lead testing efforts across teams 📃 Skills: JavaScript, TypeScript, Python, Java, Kotlin, REST, API, UI, Automation, Jenkins, CircleCI, GitHub, Git, CI/CD, Agile 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. They are now looking for a Senior Software Development Engineer in Test to join the Quality Engineering team, supporting the e-commerce and user experience platforms used by millions of customers worldwide. In this role, you will play a key part in defining test strategy, shaping automation architecture, and driving quality across complex systems. You will partner closely with engineering, product, and design teams, act as a quality leader within the organization, and mentor others to continually raise the bar for testing excellence. Projects you may work on: E-commerce and user experience platforms (web + backend, business-critical user journeys), Content and streaming applications, including media- and music-related systems, Key takeaways: Stack: JavaScript, TypeScript, Python, Java, Kotlin, REST APIs, UI & API automation frameworks, Jenkins, CircleCI, GitHub Actions, Git Salary: 19 000 PLN - 23 000 PLN gross on the Contract of Employment Working model : Hybrid - 3x weekly from the office Location: ul. Grzybowska, Warsaw Recruitment process : A call with Motife recruiter Interview with the Hiring Manager Interviews panel (live coding) Final meeting Responsibilities: Define and drive comprehensive test strategies across unit, integration, and E2E testing. Architect, build, and scale test automation frameworks for complex systems. Lead the adoption of best practices in testing, automation, and maintainability. Act as a quality owner for critical features, systems, and releases. Collaborate cross-functionally with engineering, product, design, and leadership teams. Mentor and coach engineers and SDETs on testing strategies and quality standards. Support and improve CI/CD pipelines to enable fast, reliable releases. Participate in release readiness, risk assessment, and long-term quality planning. Requirements: 6–8+ years of experience in software testing and test automation. Strong programming skills in one or more languages (Python, Java, JavaScript, Kotlin, TypeScript, etc.). Proven experience designing, architecting, and maintaining test automation solutions and frameworks for complex front-end and back-end systems. Extensive experience with UI and API test automation. Strong understanding of CI/CD workflows and tools like Jenkins, CircleCI, and GitHub Actions. Experience working in cross-functional Agile teams. Ability to work autonomously and lead testing efforts across teams. Excellent communication skills and a strong user-first mindset. Nice to have Experience with content, media, or streaming platforms. Experience leading cross-team or organization-wide quality initiatives. Experience acting as a release or quality lead. What we offer: 100% paid medical care, Multisport, Creative tax (KUP) Home office allowance MacBook Pro Apply now If you’re excited to shape the future of Android development in digital fitness and wellness, we’d love to hear from you! Please apply through our careers page with your CV in English.

🏢 Summary: The offer is for a QA Performance Engineer responsible for planning and executing performance testing, identifying system bottlenecks, and improving overall product quality. The role involves hands-on testing, defect reporting, test environment setup, and collaboration on test strategies and documentation. It requires strong technical expertise in performance testing, programming, and QA processes. 🗂️ Requirements: Competent level in Computer Science, Knowledge of architecture and design patterns, Proficiency in Java or Python, Experience with build automation, Experience with code review processes, Experience with unit testing, Knowledge of IT operations, Experience in test design, Experience in test data management, Experience in bug hunting and bug tracking, Experience with testing doubles, Experience with API testing, Experience with performance testing tools, Ability to execute and analyze performance tests 📃 Skills: Java, Python, API, PerformanceTesting, BuildAutomation, UnitTesting, CodeReview, TestDesign, TestDataManagement, BugTracking, TestingDoubles, ITOperations 🏢 Description: We are seeking a QA Performance Engineer with a strong and specialized skill set. The ideal candidate independently plans and executes performance testing, identifies and reports performance issues, analyzes system bottlenecks, and contributes to the continuous improvement of performance testing processes and overall product quality. Responsibilities: Execute test cases for assigned features or modules, report defects, and collaborate with other engineers to ensure the thorough testing of software applications. Contribute to test planning activities, assisting in estimating effort, defining testing milestones, and actively participating in test strategy discussions. Create and maintain product documentation and guides. Assist in the execution of performance test scenarios and report findings to senior team members. Participate in the setup and maintenance of test environments. Contribute to documentation efforts related to performance testing activities. Min requirements: Competent level in Computer Science, Novice in Architecture and design patterns Competent level in Programming languages (Java/Python) Competent level in Development processes, including Build automation, Code review and Unit testing Competent level in IT Operations Competent level in Quality Assurance: - Test Design and Test Data Management - Bug Hunting and Bug Tracking - Testing doubles - API, Performance Testing Tools and Performance Testing We offer: Opportunity to work on bleeding-edge projects Work with a highly motivated and dedicated team Competitive salary Flexible schedule Benefits package - medical insurance, sports Corporate social events Professional development opportunities Well-equipped office About us: Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI , supported by profound expertise and ongoing investment in data , analytics , cloud & DevOps , application modernization and customer experience . Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

🏢 Summary: Remote (later hybrid in Warsaw) Senior Load Test Engineer role focused on designing, executing, and automating performance testing for large-scale production systems. The position involves identifying bottlenecks, analyzing metrics, and integrating load tests into CI/CD pipelines to ensure platform stability and scalability. You will work closely with backend teams to maintain high performance under heavy user traffic. 🗂️ Requirements: 5+ years performance and load testing experience, Experience with large production systems, Proficiency with k6, Gatling, JMeter, or Locust, Ability to create complex load testing scripts from scratch, Strong understanding of backend systems and databases, Knowledge of infrastructure behavior under heavy load, Ability to analyze metrics from monitoring tools, Knowledge of HTTP, WebSockets, real-time protocols, Experience testing APIs under load, Experience with CI/CD pipeline integration, Proficiency with Git 📃 Skills: k6, Gatling, JMeter, Locust, Grafana, Datadog, NewRelic, HTTP, WebSockets, CI/CD, Git, APIs, Databases 🏢 Description: Please note: Remote mode but later hybrid in Warsaw Position Overview We are looking for a Senior Load Test Engineer who is passionate about performance testing. You understand how systems work when many users use them at the same time. You know how to find problems before real users experience them. You can clearly explain what is wrong and why it needs to be fixed. You work independently, manage your testing process from start to finish, and care about keeping our platform fast and stable as it grows. Key Responsibilities Plan and run load, stress, spike, and long-running tests on important parts of our platform. Study the results and find exactly where and why performance becomes worse. Work closely with backend engineers to understand the system and identify the real bottlenecks. Create and maintain performance test scripts that can be reused, stored in version control, and easily updated when the product changes. Add performance tests to CI/CD pipelines so problems can be detected early. Set performance goals and limits together with engineering and product teams. Watch how the platform behaves under load using monitoring tools and connect metrics with test results. Write clear reports and give practical recommendations to engineering teams. Qualifications 5+ years of practical experience with performance and load testing for large production systems. Strong experience with tools such as k6, Gatling, JMeter, or Locust, including creating complex scripts from the beginning. Good understanding of backend systems, databases, and how infrastructure behaves under heavy load. Ability to read and understand metrics from tools like Grafana, Datadog, New Relic, or similar. Good knowledge of HTTP, WebSockets, and real-time communication protocols. Experience testing APIs under load, including authentication flows, many users at the same time, and stateful scenarios. Familiar with CI/CD pipelines and adding performance tests to automated build processes. Comfortable using Git and working in agile engineering teams. Soft Skills Naturally curious — you like to understand why a system behaves in a certain way under pressure. Strong analytical thinking — you can review many metrics and quickly find the most important problem. Good communication — you can explain complex performance issues clearly to both developers and product managers. Self-motivated — you do not wait for someone to tell you there is a problem; you actively look for it.

🏢 Summary: Senior Data Platform Engineer role focused on designing, building, and operating scalable, highly available data persistence systems for distributed services. The position combines backend engineering, platform reliability, and cloud-native data infrastructure to improve performance, scalability, and observability of global data ecosystems. Hybrid work model with competitive salary and comprehensive benefits. 🗂️ Requirements: 5+ years of software engineering experience in production systems, Strong backend engineering skills (Python, Java, or Kotlin), Experience with large-scale, data-intensive systems, Solid understanding of distributed systems fundamentals, Experience in cloud environments (AWS preferred), Experience with relational or NoSQL databases, Hands-on experience with large-scale data pipelines, Experience with event-driven or streaming architectures, Understanding of end-to-end data flow (ingestion, transformation, storage, access), Experience designing scalable and reliable data systems 📃 Skills: Python, Java, Kotlin, Kafka, Spark, PostgreSQL, MySQL, DynamoDB, Redis, Elasticsearch, AWS, Terraform, ETL 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior Data Platform Engineer to join the Datastores team. This team is responsible for building and operating the core data persistence layer used by application services across the organization. In this role, you will design and improve the systems that store, access, and scale critical data across distributed services. It is a hands-on engineering position where you will work at the intersection of backend engineering, platform reliability, and cloud-native data infrastructure. Your work will directly influence the scalability, performance, and reliability of the company’s global data ecosystem. Key takeaways: Stack: Python, Kafka, Spark, PostgreSQL, AWS Salary: 23.000 - 30 000 PLN gross per month on Employment Contract Working model: hybrid - 3x weekly from the office Location: ul. Grzybowska 60, Warsaw Recruitment process: A call with Motife recruiter (30 min) Coding Interview (1h) Interview panel: architecture & system design discussion; Hiring Manager meeting (up to 2h in total) Responsibilities: Data Infrastructure Engineering Design, build, and operate backend systems that rely on scalable and highly available data persistence layers. Contribute to architectural decisions around distributed data systems, multi-region persistence, and global scalability. Improve the reliability and performance of production datastores used by critical services. Data Performance & Optimization Partner with service teams to improve database schema design, query performance, and data modelling. Optimize data access patterns and indexing strategies for relational and NoSQL databases. Support teams in designing systems that scale efficiently under high load. Developer Experience & Platform Tooling Build and maintain self-service tooling that enables engineers to provision and manage databases and caching layers. Contribute to infrastructure automation using tools such as Terraform and internal developer platforms. Improve observability and operational insight into datastore performance and reliability. Platform Reliability & Observability Implement monitoring, metrics, and tracing strategies to improve visibility into production data systems. Develop autoscaling and performance optimization strategies for critical data infrastructure. Support operational excellence by reducing manual processes and improving system resilience. Requirements: Technical Expertise 5+ years of experience in software engineering, building and operating production systems Strong backend engineering fundamentals (e.g. Python, Java, or Kotlin) Experience working with large-scale, data-intensive systems Solid understanding of distributed systems fundamentals (e.g. scalability, latency, reliability, data consistency) Experience working in cloud environments (preferably AWS) Familiarity with relational or NoSQL databases (e.g. PostgreSQL, MySQL, DynamoDB, Redis, Elasticsearch) Data Systems & Architecture Hands-on experience with large-scale data pipelines and data processing systems Exposure to event-driven architectures, streaming or batch processing (e.g. Kafka, Spark, ETL workflows) Understanding of end-to-end data flow: ingestion (how data enters the system) transformation (how it is processed) storage & access (how other services consume it) Experience designing systems where data performance, scalability, and reliability are critical Collaboration & Engineering Mindset Ability to work cross-functionally with service teams to improve system design and data access patterns. Strong problem-solving skills with a focus on performance, scalability, and reliability. Clear communication skills and a collaborative engineering approach. What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If you’re excited about building developer platforms that scale, empower teams, and set new standards for engineering excellence, we’d love to hear from you. Apply via our careers page and please submit your CV in English .

🏢 Summary: Senior Data Platform Engineer role focused on designing, building, and operating scalable, highly available data persistence systems for distributed services. The position combines backend engineering, cloud-native infrastructure, and data platform reliability to improve performance and scalability of global data systems. It is a hands-on role working with large-scale data pipelines, streaming, and cloud environments. 🗂️ Requirements: 5+ years of software engineering experience in production systems, Strong backend programming skills in Python, Java, or Kotlin, Experience with large-scale, data-intensive systems, Solid understanding of distributed systems fundamentals, Experience with cloud environments, preferably AWS, Experience with relational or NoSQL databases, Hands-on experience with large-scale data pipelines, Experience with event-driven architectures or streaming systems, Understanding of end-to-end data flow and data modeling, Experience designing scalable and reliable data systems, Experience with infrastructure automation tools 📃 Skills: Python, Java, Kotlin, Kafka, Spark, PostgreSQL, MySQL, DynamoDB, Redis, Elasticsearch, AWS, Terraform, ETL 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior Data Platform Engineer to join the Datastores team. This team is responsible for building and operating the core data persistence layer used by application services across the organization. In this role, you will design and improve the systems that store, access, and scale critical data across distributed services. It is a hands-on engineering position where you will work at the intersection of backend engineering, platform reliability, and cloud-native data infrastructure. Your work will directly influence the scalability, performance, and reliability of the company’s global data ecosystem. Key takeaways: Stack: Python, Kafka, Spark, PostgreSQL, AWS Salary: 23.000 - 30 000 PLN gross per month on Employment Contract Working model: hybrid - 3x weekly from the office Location: ul. Grzybowska 60, Warsaw Recruitment process: A call with Motife recruiter (30 min) Coding Interview (1h) Interview panel: architecture & system design discussion; Hiring Manager meeting (up to 2h in total) Responsibilities: Data Infrastructure Engineering Design, build, and operate backend systems that rely on scalable and highly available data persistence layers. Contribute to architectural decisions around distributed data systems, multi-region persistence, and global scalability. Improve the reliability and performance of production datastores used by critical services. Data Performance & Optimization Partner with service teams to improve database schema design, query performance, and data modelling. Optimize data access patterns and indexing strategies for relational and NoSQL databases. Support teams in designing systems that scale efficiently under high load. Developer Experience & Platform Tooling Build and maintain self-service tooling that enables engineers to provision and manage databases and caching layers. Contribute to infrastructure automation using tools such as Terraform and internal developer platforms. Improve observability and operational insight into datastore performance and reliability. Platform Reliability & Observability Implement monitoring, metrics, and tracing strategies to improve visibility into production data systems. Develop autoscaling and performance optimization strategies for critical data infrastructure. Support operational excellence by reducing manual processes and improving system resilience. Requirements: Technical Expertise 5+ years of experience in software engineering, building and operating production systems Strong backend engineering fundamentals (e.g. Python, Java, or Kotlin) Experience working with large-scale, data-intensive systems Solid understanding of distributed systems fundamentals (e.g. scalability, latency, reliability, data consistency) Experience working in cloud environments (preferably AWS) Familiarity with relational or NoSQL databases (e.g. PostgreSQL, MySQL, DynamoDB, Redis, Elasticsearch) Data Systems & Architecture Hands-on experience with large-scale data pipelines and data processing systems Exposure to event-driven architectures, streaming or batch processing (e.g. Kafka, Spark, ETL workflows) Understanding of end-to-end data flow: ingestion (how data enters the system) transformation (how it is processed) storage & access (how other services consume it) Experience designing systems where data performance, scalability, and reliability are critical Collaboration & Engineering Mindset Ability to work cross-functionally with service teams to improve system design and data access patterns. Strong problem-solving skills with a focus on performance, scalability, and reliability. Clear communication skills and a collaborative engineering approach. What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If you’re excited about building developer platforms that scale, empower teams, and set new standards for engineering excellence, we’d love to hear from you. Apply via our careers page and please submit your CV in English .