QA Automation Engineer - Sports

🏢 Summary: QA Engineer role focused on backend testing within the Retention domain of an iGaming platform, supporting communication systems, bonuses, loyalty programs, and player engagement features. The position involves designing and executing automated and manual tests, debugging issues, and improving testing processes in a fast-paced agile environment. The offer includes hybrid work, training budget, workation options, and modern equipment. 🗂️ Requirements: 5+ years of software testing experience, 2+ years of automated testing experience, Experience with backend testing, Knowledge of Java, Knowledge of JavaScript, Knowledge of MySQL, Experience with Postman, Experience with DataDog, Structured QA and testing methodology approach, Strong problem-solving skills, Strong communication skills, Ability to manage incidents and improve system resilience, English proficiency minimum B2/C1 📃 Skills: Java, JavaScript, MySQL, Postman, DataDog, Kotlin, Confluence, TestRail, AI 🏢 Description: ABOUT THE ROLE Curious about what the iGaming industry has to offer? This is a fantastic opportunity to join a fast-paced, flat-structured team within LeoVegas' Retention domain as a Quality Assurance Engineer! The Retention team powers the organisation with communication capabilities, ranging from indirect and direct communication with the players to a custom-built toolbox that enriches the player journey with bonuses, loyalty programs, and seamless cross-channel experiences. As one of the most crucial parts of the player lifecycle, the Retention domain ensures our players return for new, exciting, and rewarding experiences. We’re driven by excellence and fueled by innovation. As a QA Engineer, you are a leading light, bringing a quality-first mindset to the whole process. You have a structured approach to creating test plans, writing and executing test cases, and debugging and reporting defects. YOU WILL BE RESPONSIBLE FOR: Collaborating with development teams to analyse requirements and define comprehensive test strategies for the backend side of our platform. Proactively work to ensure high-quality software releases by engaging in the planning and development phase. Design and develop test plans with cases, including automated and manual, for integration and regression, as well as exploratory testing. Execute test cases, accurately document defects, and provide timely reports on testing progress and results. Investigate, debug, and troubleshoot issues, providing technical advice and support to stakeholders. Maintain and update the test case repository. Contribute to the continuous improvement of the testing process. Stay up-to-date with new testing tools and technologies OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS You have at least 2 years of experience creating automated tests and 5 years of experience with testing in general. You have a structured approach to quality assurance, including well-defined testing methodologies. You understand Java (as you will be testing backend). You know JavaScript, MySQL, Postman and DataDog. You have strong problem-solving and communication skills. You have the ability to manage incidents by balancing tactical short-term solutions while suggesting long-term changes that enhance system resilience. You speak English fluently (B2/C1 level is a minimum, as we communicate in English). NICE TO HAVES Familiarity with Kotlin, Confluence and TestRail. Experience using AI in testing. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 18 offices worldwide. BENEFITS Hybrid work policy (3 days from the office) 4 weeks of Workation  (T&C apply) Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) Training budget ICAS assistance program that can provide help and guidance during challenging moments. Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Free parking for bicycles and motorcycles Free gym in the building Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company working language is English, we’d like to see your CV in English, please

🏢 Summary: Software Engineer role focused on enhancing customer onboarding and responsible gaming features for a multi-brand gaming platform built on microservices. The position involves developing backend solutions, improving platform architecture, writing automated tests, and collaborating with cross-functional teams in an agile environment. Candidates will work with Java, Spring Boot, and cloud-based technologies to deliver secure and scalable solutions. 🗂️ Requirements: 3+ years of experience with Java and Spring Boot or other object-oriented languages, Experience with SQL and relational databases, Knowledge of microservice architectures, Ability to write unit, integration, and end-to-end tests, Experience collaborating in agile development environments, English proficiency for professional communication 📃 Skills: Java, Spring, SpringBoot, SQL, Microservices, Kotlin, Git, Kafka, Jenkins, GCP, BigQuery, Postman, Testing, Telemetry, Monitoring, Python, PHP, C#, C++ 🏢 Description: ABOUT THE ROLE Are you an experienced software engineer looking for a meaningful role in a dynamic environment? Join our Markets Platform Team at LeoVegas Group, where you will play a crucial role in enhancing our global customer onboarding process and developing responsible gaming features. Your work will ensure a seamless, secure, and enjoyable experience for our customers across all our brands. In this position, you will focus on refining the onboarding journey and promoting responsible gaming. Our mission is to create a safe gaming environment where players can set healthy limits on their gambling habits. We leverage data-driven insights and a robust CI/CD process, following the Kanban methodology to deliver high-quality solutions. You will work alongside expert back-end developers specialising in Java and Kotlin, as well as dedicated Quality Assurance Engineers. YOU WILL BE RESPONSIBLE FOR: Developing a multi-brand gaming platform called Rhino, built on 230+ microservices. Driving continuous improvement in the player onboarding process and responsible gaming solutions through innovative solutions. Writing extensive tests (units, e2e, integration) and updating documentation. Participating in architectural discussions and suggesting ideas for technical improvements. Collaborate with Product Managers and other stakeholders to deliver innovative solutions that enhance customer experience and promote safe gaming practices. Working closely with Backend Engineers, QA Engineers and TA Engineers. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Min. 3 years of experience in using Java + Spring Boot framework, or similar experience in Object Oriented Languages (C#, C++, Python, PHP) and willing to learn Java You have experience with SQL and relational databases You are familiar with microservice architectures NICE TO HAVES Experience with Kotlin, Git, Kafka, Jenkins. Familiarity with Google Cloud Platform and BigQuery. Strong understanding of API testing methodologies and hands-on experience with tools like Postman. Knowledge of Automated Testing. Experience with telemetry and monitoring. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 1400 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 11 offices worldwide. BENEFITS Hybrid work policy 4 weeks of Workation  (T&C apply) Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) Training budget ICAS assistance program that can provide help and guidance during challenging moments. Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Free parking for bicycles and motorcycles Free gym in the building Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company working language is English, we’d like to see your CV in English, please

🏢 Summary: Senior software engineer role focused on enhancing customer onboarding and responsible gaming features for a multi-brand gaming platform built on microservices. The position involves developing backend solutions, improving platform architecture, and collaborating with cross-functional teams in a data-driven CI/CD environment. Candidates will work primarily with Java and Spring Boot while contributing to testing, monitoring, and scalable platform development. 🗂️ Requirements: 5+ years of experience with Java and Spring Boot or other object-oriented languages, Experience with SQL and relational databases, Knowledge of microservice architectures, Ability to write unit, integration, and end-to-end tests, Experience collaborating in agile development environments, English proficiency 📃 Skills: Java, Spring, SpringBoot, SQL, Kotlin, Git, Kafka, Jenkins, GCP, BigQuery, Postman, Microservices, CI/CD, Kanban, Testing, Telemetry, Monitoring, C#, C++, Python, PHP 🏢 Description: ABOUT THE ROLE Are you an experienced software engineer looking for a meaningful role in a dynamic environment? Join our Markets Platform Team at LeoVegas Group, where you will play a crucial role in enhancing our global customer onboarding process and developing responsible gaming features. Your work will ensure a seamless, secure, and enjoyable experience for our customers across all our brands. In this position, you will focus on refining the onboarding journey and promoting responsible gaming. Our mission is to create a safe gaming environment where players can set healthy limits on their gambling habits. We leverage data-driven insights and a robust CI/CD process, following the Kanban methodology to deliver high-quality solutions. You will work alongside expert back-end developers specialising in Java and Kotlin, as well as dedicated Quality Assurance Engineers. YOU WILL BE RESPONSIBLE FOR: Developing a multi-brand gaming platform called Rhino, built on 230+ microservices. Driving continuous improvement in the player onboarding process and responsible gaming solutions through innovative solutions. Writing extensive tests (units, e2e, integration) and updating documentation. Participating in architectural discussions and suggesting ideas for technical improvements. Collaborate with Product Managers and other stakeholders to deliver innovative solutions that enhance customer experience and promote safe gaming practices. Working closely with Backend Engineers, QA Engineers and TA Engineers. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Min. 5 years of experience in using Java + Spring Boot framework, or similar experience in Object Oriented Languages (C#, C++, Python, PHP) and willing to learn Java You have experience with SQL and relational databases You are familiar with microservice architectures NICE TO HAVES Experience with Kotlin, Git, Kafka, Jenkins. Familiarity with Google Cloud Platform and BigQuery. Strong understanding of API testing methodologies and hands-on experience with tools like Postman. Knowledge of Automated Testing. Experience with telemetry and monitoring. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 1400 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 11 offices worldwide. BENEFITS Hybrid work policy 4 weeks of Workation  (T&C apply) Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) Training budget ICAS assistance program that can provide help and guidance during challenging moments. Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Free parking for bicycles and motorcycles Free gym in the building Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company working language is English, we’d like to see your CV in English, please

🏢 Summary: Senior QA Engineer role focused on end-to-end quality ownership of payment-critical features such as deposits, withdrawals, and compliance flows. The position involves hands-on automation, API/contract/E2E testing, and close collaboration with backend, frontend, and mobile engineers in a CI/CD-driven Agile environment. The role emphasizes improving test automation, reliability, and non-functional quality across distributed payment systems. 🗂️ Requirements: Proven experience testing payment systems or regulated financial platforms, Strong automation skills in API, contract, and E2E testing, Proficiency in TypeScript, Java or Kotlin, Experience with REST APIs and backend testing, Understanding of microservices and event-driven architectures, Experience working with Kafka, Practical experience improving CI/CD pipelines, Experience with MySQL, Ability to analyze distributed system failures, Fluent English (B2+) 📃 Skills: TypeScript, Java, Kotlin, REST, Kafka, MySQL, CI/CD, Microservices, API, E2E, Cucumber, Gherkin, TestRail, Xray, Zephyr 🏢 Description: ABOUT THE ROLE: Join the Payments team at LeoVegas Group as a Senior QA Engineer, focusing on payment-critical flows such as deposits, withdrawals, contract lifecycles, and compliance-driven features. You will take end-to-end ownership of quality for squad-level payment features, working hands-on with automation and end-to-end validation. In this role, you will act as a strong technical QA partner, collaborating closely with backend (Java/Kotlin, Kafka, REST, MySQL), frontend (TypeScript), and mobile engineers. You will operate in an Agile environment with a mature CI/CD setup, working alongside product, security, and compliance stakeholders. YOU WILL BE RESPONSIBLE FOR: Owning end-to-end testing and verification for Payments features delivered by your squad Breaking down ambiguous testing problems and define scoped, pragmatic test approaches with engineers and product Designing, building and maintaining robust automation (API, contract, E2E) and reliable test data/mocks for complex payment scenarios Improving CI feedback loops, reduce flakiness, and close observability/monitoring gaps for your area Triaging and resolving critical production defects and being an escalation point for quality issues in your squad Reviewing test plans, automation code and providing actionable feedback to raise the team’s craft Contributing to cross-squad initiatives and share knowledge across the QA chapter YOUR IMPACT: Writing clear, maintainable automation and test code; document test plans and design rationales Promoting non-functional quality: idempotency, data integrity, security, performance under load, and regulatory compliance Mentoring peers and collaborating proactively to improve processes, alerting and test coverage Communicating quality risk clearly to technical and non-technical stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Proven experience testing payment systems, financial transactions or other regulated platforms with domain ownership English at a min. B2+ level Strong automation skills: API testing (REST), contract testing, and E2E - fluent in TypeScript, Java or Kotlin Good grasp of microservices and event-driven systems (Kafka); able to reason about distributed failures Practical experience improving CI/CD pipelines and test feedback loops Backend testing experience across Java/Kotlin, MySQL and REST APIs Clear communicator, able to translate technical risk to stakeholders NICE TO HAVES Familiarity with payment concepts such as PSP integrations, idempotency, reconciliation, and contract state machines Experience testing performance and load in payment-critical flows Background in iGaming or another regulated industry Proficiency with test management tools (e.g. TestRail, Xray, Zephyr, or similar) Experience using mock data and mocking tools to simulate complex payment scenarios Experience with native app testing (TypeScript) Experience with Cucumber and Gherkin-based test automation Experience leading cross-functional initiatives WHO WE ARE: At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. BENEFITS: Hybrid work policy (3 days a week from office in Warsaw) 4 weeks of Workation (T&C apply) Competitive base salary Benefits package - 800 PLN net (B2B)/gross (UOP) monthly Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Equipment: MacBook + smartphone (iPhone or Samsung Galaxy)

🏢 Summary: Senior QA Engineer role focused on end-to-end quality ownership of payment-critical features such as deposits, withdrawals, and compliance-driven flows. The position emphasizes strong automation across API, contract, and E2E levels within a microservices, event-driven architecture. You will collaborate closely with backend, frontend, and mobile engineers in an Agile CI/CD environment to ensure high reliability and regulatory compliance. 🗂️ Requirements: Proven experience testing payment systems or regulated platforms, Strong automation experience in API, contract, and E2E testing, Proficiency in TypeScript, Java or Kotlin, Experience testing REST APIs and backend systems, Understanding of microservices and event-driven architectures, Experience with Kafka in distributed systems, Practical experience improving CI/CD pipelines, Experience with MySQL databases, Ability to analyze distributed system failures, Fluent English (B2+) 📃 Skills: TypeScript, Java, Kotlin, REST, Kafka, MySQL, CI/CD, Microservices, API, E2E, Cucumber, Gherkin, TestRail, Xray, Zephyr 🏢 Description: ABOUT THE ROLE: Join the Payments team at LeoVegas Group as a Senior QA Engineer, focusing on payment-critical flows such as deposits, withdrawals, contract lifecycles, and compliance-driven features. You will take end-to-end ownership of quality for squad-level payment features, working hands-on with automation and end-to-end validation. In this role, you will act as a strong technical QA partner, collaborating closely with backend (Java/Kotlin, Kafka, REST, MySQL), frontend (TypeScript), and mobile engineers. You will operate in an Agile environment with a mature CI/CD setup, working alongside product, security, and compliance stakeholders. YOU WILL BE RESPONSIBLE FOR: Owning end-to-end testing and verification for Payments features delivered by your squad Breaking down ambiguous testing problems and define scoped, pragmatic test approaches with engineers and product Designing, building and maintaining robust automation (API, contract, E2E) and reliable test data/mocks for complex payment scenarios Improving CI feedback loops, reduce flakiness, and close observability/monitoring gaps for your area Triaging and resolving critical production defects and being an escalation point for quality issues in your squad Reviewing test plans, automation code and providing actionable feedback to raise the team’s craft Contributing to cross-squad initiatives and share knowledge across the QA chapter YOUR IMPACT: Writing clear, maintainable automation and test code; document test plans and design rationales Promoting non-functional quality: idempotency, data integrity, security, performance under load, and regulatory compliance Mentoring peers and collaborating proactively to improve processes, alerting and test coverage Communicating quality risk clearly to technical and non-technical stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Proven experience testing payment systems, financial transactions or other regulated platforms with domain ownership English at a min. B2+ level Strong automation skills: API testing (REST), contract testing, and E2E - fluent in TypeScript, Java or Kotlin Good grasp of microservices and event-driven systems (Kafka); able to reason about distributed failures Practical experience improving CI/CD pipelines and test feedback loops Backend testing experience across Java/Kotlin, MySQL and REST APIs Clear communicator, able to translate technical risk to stakeholders NICE TO HAVES Familiarity with payment concepts such as PSP integrations, idempotency, reconciliation, and contract state machines Experience testing performance and load in payment-critical flows Background in iGaming or another regulated industry Proficiency with test management tools (e.g. TestRail, Xray, Zephyr, or similar) Experience using mock data and mocking tools to simulate complex payment scenarios Experience with native app testing (TypeScript) Experience with Cucumber and Gherkin-based test automation Experience leading cross-functional initiatives WHO WE ARE: At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. BENEFITS: Hybrid work policy (3 days a week from office in Warsaw) 4 weeks of Workation (T&C apply) Competitive base salary Benefits package - 800 PLN net (B2B)/gross (UOP) monthly Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Equipment: MacBook + smartphone (iPhone or Samsung Galaxy)

🏢 Summary: Senior QA Engineer role focused on end-to-end quality ownership of payment-critical features such as deposits, withdrawals, and compliance-driven flows. The position emphasizes hands-on automation (API, contract, E2E) within a microservices, event-driven environment. You will collaborate closely with backend, frontend, and mobile engineers to ensure high reliability, performance, and regulatory compliance of payment systems. 🗂️ Requirements: Proven experience testing payment systems or regulated financial platforms, Strong automation skills in API, contract, and E2E testing, Proficiency in TypeScript, Java or Kotlin, Experience testing REST APIs and backend services, Understanding of microservices and event-driven architectures, Experience with Kafka in distributed systems, Practical experience improving CI/CD pipelines, Experience with MySQL databases, Ability to handle production defects and quality escalations, English proficiency at B2 level or higher 📃 Skills: TypeScript, Java, Kotlin, REST, Kafka, MySQL, CI/CD, Microservices, API, E2E, Cucumber, Gherkin, TestRail, Xray, Zephyr 🏢 Description: ABOUT THE ROLE: Join the Payments team at LeoVegas Group as a Senior QA Engineer, focusing on payment-critical flows such as deposits, withdrawals, contract lifecycles, and compliance-driven features. You will take end-to-end ownership of quality for squad-level payment features, working hands-on with automation and end-to-end validation. In this role, you will act as a strong technical QA partner, collaborating closely with backend (Java/Kotlin, Kafka, REST, MySQL), frontend (TypeScript), and mobile engineers. You will operate in an Agile environment with a mature CI/CD setup, working alongside product, security, and compliance stakeholders. YOU WILL BE RESPONSIBLE FOR: Owning end-to-end testing and verification for Payments features delivered by your squad Breaking down ambiguous testing problems and define scoped, pragmatic test approaches with engineers and product Designing, building and maintaining robust automation (API, contract, E2E) and reliable test data/mocks for complex payment scenarios Improving CI feedback loops, reduce flakiness, and close observability/monitoring gaps for your area Triaging and resolving critical production defects and being an escalation point for quality issues in your squad Reviewing test plans, automation code and providing actionable feedback to raise the team’s craft Contributing to cross-squad initiatives and share knowledge across the QA chapter YOUR IMPACT: Writing clear, maintainable automation and test code; document test plans and design rationales Promoting non-functional quality: idempotency, data integrity, security, performance under load, and regulatory compliance Mentoring peers and collaborating proactively to improve processes, alerting and test coverage Communicating quality risk clearly to technical and non-technical stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Proven experience testing payment systems, financial transactions or other regulated platforms with domain ownership English at a min. B2+ level Strong automation skills: API testing (REST), contract testing, and E2E - fluent in TypeScript, Java or Kotlin Good grasp of microservices and event-driven systems (Kafka); able to reason about distributed failures Practical experience improving CI/CD pipelines and test feedback loops Backend testing experience across Java/Kotlin, MySQL and REST APIs Clear communicator, able to translate technical risk to stakeholders NICE TO HAVES Familiarity with payment concepts such as PSP integrations, idempotency, reconciliation, and contract state machines Experience testing performance and load in payment-critical flows Background in iGaming or another regulated industry Proficiency with test management tools (e.g. TestRail, Xray, Zephyr, or similar) Experience using mock data and mocking tools to simulate complex payment scenarios Experience with native app testing (TypeScript) Experience with Cucumber and Gherkin-based test automation Experience leading cross-functional initiatives WHO WE ARE: At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. BENEFITS: Hybrid work policy (3 days a week from office in Warsaw) 4 weeks of Workation (T&C apply) Competitive base salary Benefits package - 800 PLN net (B2B)/gross (UOP) monthly Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Equipment: MacBook + smartphone (iPhone or Samsung Galaxy)

🏢 Summary: Senior backend engineering role focused on designing and evolving scalable real-time sportsbook distributed systems used by millions of users. The position combines hands-on development with technical leadership across architecture, performance, reliability, observability and event-driven platform evolution. Engineers will mentor teams, improve operational excellence and drive long-term scalability in a high-volume environment. 🗂️ Requirements: Experience designing and operating distributed systems at scale, Strong Java expertise, Knowledge of JVM internals, Concurrency and multithreading experience, Experience with Reactive Programming, Experience with Spring Boot or Vert.x, Experience with Apache Kafka, Knowledge of event-driven architectures, Experience with Redis, Experience with SQL databases, Experience with NoSQL databases, Experience with observability and monitoring platforms, Production incident debugging experience, Strong system design skills, Architectural decision-making skills, Ability to communicate with technical stakeholders 📃 Skills: Java, JVM, Spring, Vert.x, Kafka, Redis, SQL, PostgreSQL, MariaDB, MongoDB, Datadog, Grafana, Kibana, Reactive, CI/CD, Kubernetes, AWS, GCP, OpenSearch, Elasticsearch, NATS 🏢 Description: ABOUT THE ROLE LeoVegas Group is building a world-class Sportsbook platform. Within the Sports domain, we work in a high-volume, real-time environment where speed, correctness, scalability and reliability are critical, building the services that transform incoming sports, trading and pricing data into experiences used by millions of customers. We are looking for a highly experienced Staff Backend Engineer to help lead the design, development and evolution of these distributed systems. You will provide technical leadership across architecture, engineering practices and platform evolution while remaining hands-on, helping teams make better technical decisions, raise engineering standards, simplify complex systems and balance business needs with long-term platform health. This role suits someone who enjoys understanding the technical and business context behind problems rather than implementing solutions mechanically. We value engineers who are curious and proactive, comfortable with ambiguity, and who lead through collaboration and ownership rather than authority. WHAT YOU'LL DO Lead architecture and design discussions for scalable, resilient and maintainable distributed systems, evaluating options through spikes, experiments and proofs of concept. Drive simplification of complex systems while holding a high bar for performance, reliability and code quality. Identify scalability, resiliency and operational risks before they reach production, and lead root cause analysis when incidents occur. Improve observability, monitoring and operational readiness, and drive down technical debt across the platform. Promote best practices around event-driven and reactive architectures, performance optimisation, testing, automation and CI/CD. Mentor engineers through design reviews, code reviews, pair programming and technical guidance. Partner with Product, Engineering Managers and Architects to translate business problems into practical solutions, and help shape and break down technical initiatives. Contribute to a culture of ownership, collaboration, continuous improvement and engineering excellence. WHAT WE'RE LOOKING FOR ESSENTIAL SKILLS Proven experience designing, building and operating distributed systems at scale, owning complex backend systems end-to-end in production. Strong backend expertise in Java (preferably 21+), with a solid understanding of JVM internals, concurrency and multithreading. Hands-on experience with Reactive Programming and non-blocking systems using Spring Boot and/or Vert.x. Hands-on experience with Apache Kafka and event-driven architectures; familiarity with streaming and messaging technologies such as Redis or NATS. Experience with Redis for caching and low-latency data access, and with SQL and NoSQL databases (e.g. PostgreSQL, MariaDB, MongoDB). Experience with observability and monitoring platforms such as Datadog, Grafana or Kibana, and with debugging complex production incidents. Strong system design and architectural decision-making, balancing latency, throughput, consistency, operational complexity and maintainability. Ability to influence technical decisions and communicate effectively with engineers, architects, product managers and other stakeholders. NICE TO HAVE Experience with Kubernetes, AWS and/or GCP, and cloud-native architecture patterns. Experience with OpenSearch and/or Elasticsearch for search, analytics and operational troubleshooting. Experience building internal platforms, shared frameworks or developer productivity tooling, with a strong SRE mindset. Experience within sports betting, gaming or other real-time, data-intensive domains. WHAT SUCCESS LOOKS LIKE Teams rely on you for technical direction and practical problem-solving, and move faster thanks to the foundations, tooling, standards and guidance you help establish. The platform becomes more reliable, scalable and easier to operate over time, with fewer production incidents. Technical decisions are made with greater clarity, consistency and long-term sustainability. Cross-team dependencies are better coordinated, reducing friction and improving delivery. Engineers grow technically through your mentorship, feedback and leadership. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 21 offices worldwide. WHAT WE OFFER Competitive salary aligned with your experience, expertise, and impact A collaborative, inclusive, and fast-paced engineering environment where ideas are welcomed, ownership is encouraged, and continuous learning is valued Hybrid work policy 4 weeks of Workation (T&C apply) Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) Training budget ICAS's assistance program can provide help and guidance during challenging moments. Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Free parking for bicycles and motorcycles Free gym in the building Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company's working language is English, we’d like to see your CV in English, please

🏢 Summary: Senior Product-Minded QA Engineer role focused on owning the full quality lifecycle for a large-scale live sports data platform. The position emphasizes early involvement in requirements and design (Shift Left), building smart automation with modern tools, and ensuring high release quality through exploratory and automated testing. You will collaborate closely with Product Managers and Engineers to deliver reliable, scalable, and user-centric solutions. 🗂️ Requirements: 4+ years of QA experience in complex product teams, Experience leading quality strategy and test design, Strong expertise in UI test automation (Playwright or Cypress), Experience with API testing, Strong SQL knowledge, Experience integrating automated tests into CI/CD pipelines, Experience using AI tools (LLMs) for coding or testing support, Ability to define clear, testable user stories with Product Managers, Experience in exploratory and automated testing for complex workflows 📃 Skills: Playwright, Cypress, Postman, REST, SQL, GitHub, Jenkins, CI/CD, LLM, Automation, API 🏢 Description: Company Description We’re the world’s leading sports technology company, at the intersection between sports, media, and betting. More than 1,700 sports federations, media outlets, betting operators, and consumer platforms across 120 countries rely on our know-how and technology to boost their business. Job Description ABOUT US Join our team and become a part of the global fast-growing success of Sportradar. A technology first software development company with high emphasis on achieving technical excellence and building services on best practice cloud principles. We build our own product and believe in 'you build it, you own it', so we want to give our squads autonomy to choose the right solutions. We are NASDAQ-listed and are one of the fastest-growing sports-tech companies on the planet. Our vision is built on long-term relationships with all our partners including NBA, UEFA, ATP, MLB, NHL and many more. The Live Data Services team is the heart of our live data ecosystem, gathering all the events for more than 30 sports and providing them to our clients. You will be a key creator for the platform that drives the industry’s largest sports data coverage. Our system empowers a global network of data journalists ("scouts") to collect live statistics from stadiums worldwide. THE CHALLENGE: We are looking for a Product-Minded Senior QA Engineer. We need someone who looks beyond just "testing code" and takes ownership of the entire quality lifecycle. You will work side-by-side with Product Managers to refine requirements before development starts ("Shift Left"). You are also a creator who uses modern tools (AI, Copilot) to build smart automation, ensuring our platform is fast, reliable, and easy for our scouts to use. Key Responsibilities : Requirement Ownership: Collaborate with Product Managers and Engineers to turn business ideas into clear, testable user stories. You ensure the team knows exactly what to build to avoid logic gaps later. Shift Left: Get involved in the design phase. You challenge assumptions and identify risks early, preventing bugs before a single line of code is written. Smart Automation (Creator Mindset): Build tools, bots, and scripts that improve developer efficiency. Use AI to speed up test creation and data analysis. Testing Execution: Balance deep exploratory testing (finding complex logic issues) with robust automated checks (Playwright/Cypress) for critical workflows. Release Quality: Act as the gatekeeper for quality. You validate that new features meet both technical standards and user needs. Our Toolkit: Automation: Expert in modern UI frameworks (Playwright or Cypress preferred). API & Data: Strong experience with API testing (Postman, REST Assured) and SQL. Modern Tech: Experience using AI tools (LLMs) to assist with coding and testing. CI/CD: Comfortable integrating tests into pipelines (GitHub Actions, Jenkins). ABOUT YOU: 4+ Years Experience: Proven history of leading quality strategy in complex product teams. Product Mindset: You care about the user experience and business logic, not just passing test cases. Proactive: You don’t wait for detailed instructions; you ask questions and define the path forward. Clear Communicator: You can explain technical risks simply to non-technical team members. OUR OFFER: The opportunity to work and develop within an inspiring and fast-growing company. Flat organization with high degree of individual responsibility A collaborative environment with colleagues from all over the world (Engineering offices in Europe, Asia and the US) Very good social and physical working environment A company culture that promotes social aspects, sports, physical exercise, and fun. Competitive salary and benefits Hybrid work model OUR RECRUITMENT PROCESS: Initial Screening : A brief conversation with our Talent Acquisition Partner to review your background, experience, and expectations Product Interview: A 60-minute interview to discuss your understanding of user needs, business goals, and real-world product impact beyond just finding bugs Technical Interview : An in-depth technical discussion covering QA fundamentals, test design and strategy, automation concepts, and problem-solving approaches, with scenario-based questions and hands-on exercises. Cultural Fit Interview (30 minutes) : A conversation with Senior Management to assess your ability to work in a matrix organization and collaborate with stakeholders We keep it simple and aim to wrap up the process within 3 weeks. Additional Information At Sportradar, we celebrate our diverse group of hardworking employees. Sportradar is committed to ensuring equal access to its programs, facilities, and employment opportunities. All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. We encourage you to apply even if you only meet most of the requirements (but not 100% of the listed criteria) – we believe skills evolve over time. If you’re willing to learn and grow with us, we invite you to join our team!

🏢 Summary: The offer is for a QA Engineer role focused on ensuring quality of sports data products through manual and automated testing in a Scrum-based R&D team. The position involves designing and executing tests, improving test processes and automation, and collaborating closely with Product and Development teams. It is a long-term opportunity in a hybrid work model with strong emphasis on quality, test coverage, and modern technologies. 🗂️ Requirements: 3+ years of commercial experience testing modern applications, Experience in test automation, Knowledge of TypeScript, Knowledge of Playwright, Knowledge of software development life cycle, Knowledge of QA methodologies, Experience with CI/CD, Understanding of Agile methodologies (Scrum, Kanban), Communicative English 📃 Skills: TypeScript, Playwright, CI/CD, Scrum, Kanban, SQL 🏢 Description: STATSCORE! We are one of the world's leading companies in the field of providing innovative products for the sports industry. We collect, organize and deliver high-quality sports data helping sports enthusiasts, media and betting organizations achieve their goals. We connect people through what we do, and create a better world for sports, every single day! PRODUCTS? All of our products are built in-house and are strictly related to sport. We are serving our customers with in-play live visualizations, as well as sports statistics widgets and raw data provided by our SportsAPI. All the features are created by using new technologies and the best practices around the process of software development. WHAT ROLE WILL YOU TAKE ON A TEAM We are currently looking for experienced talents who would like to join our R&D group and work with us to solve complex problems in a simple way! As a product company we are looking for long-term cooperation. Your role as QA Engineer requires quality engineering experience in the field of both manual and automatic testing to be a natural team player and empathetic person who will be cooperating with other QA, Developers, Product Manager, System Architect and Tech Leaders. You will spend your time mostly on: New features (~50%) Maintenance/Bug fixing (~20%) Document writing (~20%) Meetings (~10%) YOUR RESPONSIBILITIES: Development of order acceptance criteria in collaboration with the Product Owner Design and run manual and/or automated, functional and non-functional tests Own, drive and improve testing process, tools and metrics used Setting and maintaining test documentation standards Make continuous improvements to test coverage, execution and automation Cooperate with Product and Development teams to ensure proper scope of testing OUR EXPECTATIONS: Have 3+ years of experience testing modern applications in a commercial environment Experience in test automation - must have Good interpersonal skills and communicative English Knowledge of TypeScript and Playwright Knowledge of software development life cycle and QA methodologies Experience with CI/CD Understanding of Agile methodologies (mainly Scrum and Kanban) Would be your advantage: Sports rules knowledge Experience with SQL HOW DO WE WORK? We work in self-organizing Scrum teams. Test writing and code refactoring is our daily bread. We are taking care of the technological debt and the quality of the code. We plan our Sprint goals every 2 weeks, and use OKR’s in every quarter planning. We speak both Polish (internally) and English (with our partners). We work in hybrid mode with flexible hours, from home or from the office in Katowice (no dress code). TEAM & WORKING CONDITIONS: Annual performance bonus Private medical care Life insurance Long-term cooperation Lunch cards Sport cards Professional training & courses + English language courses Integration events, family picnics Additional days off for: birthdays, volunteer work Employee referral program Fruits / coffee / tea / drinks Fun office activities in our leisure zone such as: table football, play station, board games, darts Welcome pack All the equipment you need (laptop, extra-monitor, headphones), you only have to bring your talent! Salary ranges: CoE (maternity cover) 9 000 – 13 500 PLN gross Hybrid work model: 2-3 days/week in the office in Katowice RECRUITMENT PROCESS: Only 2 short stages ahead of you: Screening – video call with Recruiter (30 min) Interview – meeting in the office with Hiring Manager, HR and with QA (max. 90 min)

🏢 Summary: The offer is for a Software Architect role focused on designing and delivering scalable, low-latency microservices for a high-volume, real-time Sportsbook platform. The position involves leading architectural decisions, improving system performance and resilience, and guiding engineering teams in a complex distributed environment. 🗂️ Requirements: 8+ years of hands-on experience with Java, Experience designing and deploying scalable RESTful microservices in production, Experience with distributed and real-time systems, 8+ years of experience with Java frameworks such as Spring Boot or Vert.x, Experience with asynchronous messaging systems, Hands-on experience with relational and NoSQL databases, Experience with container orchestration and managing containerized applications, Experience automating CI/CD pipelines, Understanding of reactive programming concepts 📃 Skills: Java, Spring, SpringBoot, Vertx, REST, Microservices, Kafka, NATS, MariaDB, MongoDB, Elasticsearch, Redis, Kubernetes, Nomad, CI/CD, RxJava, AWS, GCP 🏢 Description: About the role As a Software Architect, you'll play a pivotal role in designing and implementing innovative features for our cutting-edge Sportsbook platform. Working in a highly collaborative and agile environment, you'll collaborate with product managers, engineers, and fellow architects to deliver high-performing solutions within a complex microservices architecture. We're seeking a passionate and technically strong Software Architect to help us build the best Sportsbook platform in the industry. If you thrive in a fast-paced, collaborative environment and love designing and building high-quality, low-latency systems, this is the opportunity for you! YOU WILL BE RESPONSIBLE FOR Design and document software architectures and technology strategies for our high-volume, real-time betting platform. Lead the design and implementation of scalable, low-latency, and resilient systems, focusing on performance and maintainability. Analyze and prototype new technologies, providing documented recommendations and influencing technology choices. Actively participate in code reviews, mentoring, and coaching development teams to ensure high-quality code and system design. Continuously improve our live systems, focusing on performance, scalability, and resilience. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING ESSENTIAL SKILLS Proven ability to design, implement, and deploy highly scalable RESTful Microservices in a production environment. 8+ years of hands-on experience with Java (latest versions) and its ecosystem. Experience designing, building, and troubleshooting distributed and real-time systems. 8+ years of experience building applications with Java frameworks like Spring Boot or Vert.x. Familiarity with asynchronous messaging systems (e.g., Kafka, Nats). Hands-on experience with databases like MariaDB, MongoDB, Elasticsearch, and Redis. Understanding of container orchestration frameworks (e.g., Kubernetes, Nomad), including deploying and managing containerized applications. Proven ability to automate CI/CD pipelines. Excellent written and verbal communication skills, with the ability to explain complex technical concepts to both technical and non-technical audiences. Familiarity with Reactive Programming concepts and experience with frameworks like RxJava. NICE TO HAVES Experience leveraging AWS managed services (e.g., Cloudfront, RDS, OpenSearch, ElastiCache, EKS, MSK) and/or Google Cloud Platform equivalents. Familiarity with the online gaming, gambling, or sports betting industry. Strong understanding of performance optimization techniques and experience tuning high-performance applications. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. WHAT WE OFFER: hybrid model - we would like you to show up in our Warsaw office three times per week, the rest of the days of the week are up to you, we work in European office hours, 800 PLN monthly for benefits (we have a platform with sport cards and different options for private healthcare), welcome package, no dress code, international teams, Equipment: MacBook Pro 16" (or 14")/M2 Pro 10-core/GPU 16-core/32GB/512GB SSD + phone (Samsung or iPhone - it’s your choice). THE PROCESS: 30-45 minutes meeting with our recruiter 60 minutes technical meeting with Senior Staff Architect 30 minutes technical meeting with Senior Staff Backend Engineer 60 minutes cultural interview with your future Manager Our office is located in the centre of Warsaw - on Królewska 16 👑 As our company working language is English, we’d like to see your CV in English please More about us: Careers site: www.leovegasgroup.com/careers LinkedIn: https://www.linkedin.com/company/leovegasgroup/ Instagram: www.instagram.com/lifeatleo/