Domain Architect - Sports Platform Engineering

🏢 Summary: Engineering Manager role leading distributed teams focused on sportsbook trading and feeds integration within a microservices-based platform. The position combines technical leadership, people management, and cross-team coordination in a fast-paced agile environment. 🗂️ Requirements: 5+ years of engineering experience, Experience with Java or other object-oriented backend technologies, Experience with microservices architectures, Experience with Kafka or other message brokers, 3+ years of Engineering Manager or Team Lead experience, People management experience, Experience with agile methodologies, Ability to lead cross-functional and distributed teams 📃 Skills: Java, Kafka, Microservices, Agile 🏢 Description: ABOUT THE ROLE LeoVegas Group is building something special – a world-class team dedicated to creating the best Sportsbook platform in the market through cutting-edge technology and innovative gaming experiences. To lead the charge, we're searching for a passionate and driven Engineering Manager who will lead two existing teams in Poland and Spain, focusing on the Sportsbooks platform domain, specifically responsible for Trading and Feeds Integration. YOU WILL BE RESPONSIBLE FOR: Provide technical leadership and mentorship to a team of senior engineers. While not directly coding on a daily basis, you will contribute your expertise to architectural discussions, guidance for the teams, and the establishment of engineering best practices. Champion a culture of engineering excellence by defining and implementing processes that enhance code quality, development efficiency, and team collaboration. Lead with a people-first approach. You will be responsible for all aspects of people management, including performance evaluations, development plans, 1:1s, and fostering a positive and empowering work environment. Collaborate closely with product management to provide technical insights and contribute to the definition of product roadmaps, ensuring alignment between engineering capabilities and business goals. Coordinate cross-team dependencies and deliver on time. Lead the projects that you own, and support projects led by other teams. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: Essential Skills: Solid engineering background, spending at least 5+ years working as an engineer (preferably Java or any other object-oriented backend technology) Experience with microservices-based products and message brokers (we use Kafka) At least 3 years of experience as an Engineering Manager or Team lead People management experience (leading 121s, performance evaluations, etc.) Experience with agile methodologies and goals Nice-to-Have: Experience managing more than one single team Experience managing remote teams Experience working with a high load of real-time data Experience working with external data providers 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 almost 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. WHAT WE OFFER ●   Hybrid work policy ( 🏢 Our office is located in the centre of Warsaw - on Królewska 16 👑) ●   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! At LeoVegas Group, we encourage our teammates to find their roar and run with their boldest ideas. We don't wait for things to happen—we pounce and make them happen! Would you be a great fit for Leo Pride? Give us a roar and apply today! 🚀 As our company's working language is English, please submit your CV in English. More about us: Careers site: www.leovegasgroup.com/careers LinkedIn: https://www.linkedin.com/company/leovegasgroup/ Instagram: www.instagram.com/lifeatleo/

🏢 Summary: Senior Domain Architect role combining hands-on Java/Kotlin development with architectural leadership in the Payments domain, focused on designing scalable, high-through transactional systems and guiding technical direction. The position involves defining architecture standards, driving technical roadmap, and mentoring engineers while collaborating with product and business stakeholders. The role requires active coding, architectural governance, and ensuring resilient, future-proof enterprise systems. 🗂️ Requirements: Minimum 5 years experience as Senior Software Engineer, Minimum 2 years experience in architectural decision-making, Strong Java and/or Kotlin development experience, Experience with Event-Driven Architecture, Experience with Microservices Architecture, Experience designing scalable, high-concurrency, fault-tolerant systems, Experience working with business stakeholders, PMs or POs, Ability to lead and mentor engineering teams, Hands-on coding experience 📃 Skills: Java, Kotlin, Microservices, Event-Driven, Architecture, Scalability, Concurrency, Fault-tolerance 🏢 Description: ABOUT THE ROLE: The Domain Architect (DA) role is a combined senior developer and architect position with a hands-on approach. You will be responsible for designing, optimizing, and governing the technical and functional development within Payments domain. You will work together with Engineering and Product teams to create innovative, high-performing features and high-throughput transactional systems to deliver "The greatest iGaming experience." A key expectation is to write code and guide/mentor developers in the domain to ensure the platform is robust, scalable, future-proof, and aligns with business goals and enterprise architecture. YOU WILL BE RESPONSIBLE FOR: Develop and maintain the architecture for the specific domain and its technical roadmap . Help the team design the architecture and implement solutions for complex features. Ensure the architecture is scalable, resilient, and efficient , aligned with business, IT, and legal strategies. Drive continuous improvement in the architecture. Define architecture principles, models, and guidelines. Define and enforce architectural standards and governance processes. Lead other engineers and educate developers in best practices and architecture principles. Review developers' work and provide relevant feedback. Represent the domain in technical discussions with architect peers and stakeholders. Responsible for maintaining comprehensive documentation (diagrams, models, decision logs). Work closely with business stakeholders to translate their needs into architectural solutions. Communicate complex technical challenges for non-technical stakeholders. OUR SUCCESSFUL CANDIDATE HAVE THE FOLLOWING: Been working a minimum of 5 years as a senior software engineer. Minimum 2 years of experience making technical decisions on an architectural level. Clear Communication - ability to adapt depending on the audience. Experience working with business stakeholders or/and PMs/PO. Solid background as a Java and/or Kotlin developer. Experience with Event-Driven Architecture and Microservice Architecture. Ability to lead/mentor teams, strong analytical/problem-solving skills, and a good understanding of architectural principles in scalable, highly concurrent, and fault-tolerant enterprise systems. Passion for software development and hands-on work with code. NICE TO HAVES: Fullstack experience. Solution-oriented mindset. Experience in driving creation of architectural guidelines and documentation 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 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 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: 45 minutes meeting with our recruiter 90 minutes technical meeting with Lead Architect case study - a problem for you to crack at home 90 minutes final interview where you can present your ideas for the case study 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/

🏢 Summary: QA Automation Engineer role within a Sportsbook team, focused on ensuring high quality, security, and performance of a global betting platform through backend and frontend test automation. The position involves designing and maintaining automated tests, improving test strategies, and collaborating in an Agile environment with Java and TypeScript engineers. The role combines API, UI, and E2E testing with real-time data challenges in a fast-paced product environment. 🗂️ Requirements: Experience with backend test automation using Java, Practical experience with automated API testing, Familiarity with REST APIs, Basic understanding of microservices architecture, Proficiency with test management tools (e.g. TestRail or similar), Understanding of Agile/Scrum methodologies 📃 Skills: Java, API, REST, Microservices, TestRail, Agile, Scrum, Playwright, CI/CD, PerformanceTesting 🏢 Description: ABOUT THE ROLE: Are you a QA Automation Engineer who thrives in a fast-paced environment? Join the Sportsbook team at LeoVegas and help shape the future of our betting platform. Your work will directly impact millions of users, ensuring a secure, seamless, and high-performance experience across all our global brands. Working in a collaborative Agile team alongside skilled Java, TypeScript, and QA engineers, you will design robust test strategies and define clear scopes aligned with business goals. If you want to tackle real-time data challenges and elevate a world-class sports betting product, we’d love to hear from you! YOU WILL BE RESPONSIBLE FOR: Designing, executing, and maintaining test cases for backend and frontend components Identifying opportunities for automation across the betting flow and contributing to their implementation Supporting the design and maintenance of automated tests (API, UI, E2E) Collaborating with developers and QAs to define testing scope and ensure adequate test coverage Executing manual and automated tests as part of the development lifecycle Reporting, tracking, and verifying defects, ensuring timely resolution Contributing to improving test processes, reliability, and overall product quality Communicating risks and findings clearly to team members and stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Experience with backend test automation using Java Practical experience with automated API testing Familiarity with REST APIs and basic understanding of microservices architecture Proficiency with test management tools (e.g. TestRail or similar) Understanding of Agile/Scrum and modern software development practices NICE TO HAVES Experience with frontend testing including UI automation tools (Playwright) Experience with CI/CD pipelines Knowledge of event-driven systems Experience with performance testing ISTQB certification Interest in or experience with the iGaming domain WHAT WE VALUE: Proactive mindset - you identify issues and opportunities to improve quality Collaborative approach - you work closely with developers, PMs, and other QAs Curiosity about the product - you want to understand the betting domain, not just test it 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 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, on Wednesdays Fika, and Fridays croissants 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 we’d like to see your CV in English, please**

🏢 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: 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: Staff Software Engineer role focused on leading the design and delivery of large-scale, cloud-native distributed systems powering real-time sports media data and APIs used globally. The position combines hands-on architecture, cross-team technical leadership, and mentorship to ensure high performance, scalability, and reliability. You will drive multi-team initiatives and shape engineering standards across high-throughput production systems. 🗂️ Requirements: 8+ years of professional software engineering experience, Experience building large-scale production systems, Expertise in distributed systems, Expertise in cloud-native architectures, Experience designing high-throughput services, Strong system architecture and design skills, Experience leading cross-team technical initiatives, Experience mentoring engineers, Strong knowledge of JavaScript or TypeScript, Strong knowledge of Node.js, Experience with AWS, Experience with SQL or NoSQL databases, Experience with GraphQL 📃 Skills: JavaScript, TypeScript, Node.js, React, AWS, Lambda, SQS, EventBridge, PostgreSQL, MySQL, Redis, MongoDB, AuroraDB, GraphQL, SQL, NoSQL 🏢 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 Staff Software Engineer (Sports Media) Warsaw, Poland ABOUT US Our Sports Media Team is seeking a passionate Staff Software Engineer who loves to solve problems, build cloud native solutions, and excels on cross-functional teams of talented peers. What does the Sports Media Team work on? We work with exclusive data rights for top leagues such as MLB, NBA, NHL, and NASCAR, giving us direct access to in‑stadium data, including player and optical tracking. For other leagues like the NFL, NCAA, and global sports, we build tooling for our extensive scouting network. Our systems power the fastest and most accurate live game data in the market — supporting billions of API calls monthly and enabling global partners like Apple, Google, Amazon, Facebook, The Score, and Bleacher Report to build exceptional fan experiences. Our analytics and broadcast solutions also help storytellers at Fox Sports, Bally Sports, CBS Sports, NBC Sports, and more deliver the narratives, statistics, and graphics seen by millions during major sporting events — from the World Series to the Super Bowl. THE CHALLANGE Technical Leadership Lead design and architecture for major systems or product areas across multiple teams Guide engineers in making high‑quality technical decisions and establish standards for reliability, performance, and scalability Evaluate and introduce technologies that improve system design and developer productivity System Architecture & Delivery Drive multi‑team, multi‑quarter technical initiatives from planning through execution Architect distributed, high‑availability, cloud‑native systems that operate at global scale Partner with other engineering leaders to ensure architectural alignment across the organization Cross‑Functional Collaboration Work closely with Product and Engineering Managers to shape technical roadmaps Break down complex requirements into achievable technical plans and ensure successful delivery Communicate architectural decisions clearly to technical and non‑technical stakeholders Mentorship & Influence Mentor Senior Engineers and grow emerging technical leaders Create a culture of craftsmanship, operational excellence, and continuous improvement Provide thoughtful code reviews and guide teams toward long‑term sustainability Operational Excellence Identify systemic issues affecting reliability, scalability, and performance and lead efforts to resolve them Improve team and org‑wide engineering practices, patterns, and tooling Encourage and model best practices, including AI‑assisted development workflows ABOUT YOU 8+ years of professional software engineering experience, including large‑scale production systems Deep expertise in distributed systems, cloud‑native architectures, and high‑throughput services Strong architectural skills, with the ability to design for scale, reliability, and maintainability Proven ability to lead cross‑team initiatives and drive results across multiple contributors Excellent communication and collaboration skills across disciplines and leadership levels Experience mentoring Engineers Strong knowledge of one or more areas of our stack (JavaScript/TypeScript, Node.js, React, AWS, event‑driven architectures, SQL/NoSQL databases, GraphQL) Experience contributing to or defining engineering standards, patterns, or best practices Bonus: Experience with AWS serverless Experience designing high‑performance, real‑time data pipelines Familiarity with Apollo Federation GraphQL or large‑scale developer API ecosystems Experience building or maintaining mission‑critical systems for media, streaming, or data platforms Familiarity with using AI tools (Cursor, GitHub Copilot) in engineering workflows Primary Tech Stack: Note: The stack may vary depending on the team. We are hiring across multiple product lines. JavaScript, TypeScript Node.js PostgreSQL, MySQL, Redis, Document/MongoDB, AuroraDB SQS, Event Bridge AWS (Lambda, SQS, EventBridge etc.) React, SPAs GraphQL OUR OFFER A collaborative global environment with engineering teams across Europe, Asia, and the US. Flexibility and autonomy to manage your work and balance priorities. A vibrant, inclusive community, including Women in Tech and Pride groups. Access to the Global Employee Assistance Programme . Subscriptions to Calm and Reulay for wellbeing and resilience. The autonomy and trust expected of Staff‑level leadership Online training resources and continuous learning opportunities. Flexible working hours and hybrid work options. OUR RECRUITMENT PROCESS Initial Screening A short conversation with our Talent Acquisition Partner to learn more about your background and expectations. Technical Assessment A brief take‑home task to demonstrate your technical skills. Technical Interview A deep dive into your solution and a conversation with the technical team and Hiring Manager. Onsite Interview (if needed) Meet the local team and tour our office. Final Steps Receive feedback and if selected, an offer to join us. Don’t meet every single requirement?  At Sportradar we are dedicated to building a diverse, inclusive and authentic workplace, so if you’re excited about this role but your experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyways. You may be just the right candidate for this or other roles. 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: Senior Staff Software Engineer role focused on leading architecture and development of large-scale, low-latency, cloud-native distributed systems powering real-time sports media data platforms. The position drives technical strategy, platform modernization, and operational excellence across multiple teams. It combines hands-on backend expertise with organization-level architectural leadership. 🗂️ Requirements: 12+ years professional software engineering experience, Experience building large distributed production systems, Expertise in systems architecture and distributed systems design, Experience with cloud-native platforms, High proficiency in JavaScript and TypeScript, Strong experience with Node.js backend development, Experience leading multi-team technical initiatives, Experience designing high-availability, low-latency systems 📃 Skills: JavaScript, TypeScript, Node.js, PostgreSQL, MySQL, Redis, MongoDB, AuroraDB, AWS, Lambda, SQS, EventBridge, Kubernetes, GraphQL, React, CI/CD, DistributedSystems, CloudNative, Serverless, APIs 🏢 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 Senior Staff Software Engineer (Sports Media) Warsaw, Poland ABOUT US Our Sports Media Team is seeking a passionate Sr. Staff Software Engineer who loves to solve problems, build cloud native solutions, and excels on cross-functional teams of talented peers. What does the Sports Media Team work on? We work with exclusive data rights for top leagues such as MLB, NBA, NHL, and NASCAR, giving us direct access to in‑stadium data, including player and optical tracking. For other leagues like the NFL, NCAA, and global sports, we build tooling for our extensive scouting network. Our systems power the fastest and most accurate live game data in the market — supporting billions of API calls monthly and enabling global partners like Apple, Google, Amazon, Facebook, The Score, and Bleacher Report to build exceptional fan experiences. Our analytics and broadcast solutions also help storytellers at Fox Sports, Bally Sports, CBS Sports, NBC Sports, and more deliver the narratives, statistics, and graphics seen by millions during major sporting events — from the World Series to the Super Bowl. THE CHALLANGE Technical Leadership Org‑Level Technical Leadership Own architectural direction for major product surfaces Establish long‑term engineering priorities and influence technology strategy Drive platform modernization, scalability, observability, and resiliency initiatives Introduce new technologies, patterns, and frameworks with measurable impact Architecture & System Design Architect distributed, high‑availability systems that must operate with extremely low latency under global scale Evaluate system bottlenecks, performance issues, and design limitations driving solutions across multiple teams Provide authoritative guidance on trade‑offs involving cost, reliability, performance, and complexity Mentorship & Talent Development Mentor Engineers Coach teams on architecture, system design, and engineering best practices Participate in engineering hiring, leveling calibration, and interview standards Cross‑Functional Strategic Influence Partner with Engineering Managers, Product Directors, and senior leadership to define technical roadmaps Translate business strategy into scalable technical solutions and system architectures Communicate complex technical topics clearly to executives, teams, and partner organizations Operational Excellence Lead initiatives that improve uptime, latency, performance, deployment safety, and observability Drive org‑wide improvements in CI/CD automation, developer experience, and production reliability Champion high engineering standards, including AI‑assisted development practices ABOUT YOU 12+ years professional software engineering experience, including building large, distributed production systems Deep expertise in systems architecture, distributed systems design, and cloud‑native platforms Demonstrated ability to deliver and lead multi‑team, multi‑quarter initiatives Strong technical judgment and the ability to make high‑impact architectural decisions Proven track record influencing at organization‑level, not just team‑level High proficiency in modern backend engineering (JavaScript/TypeScript, Node.js) and familiarity with our broader stack Excellent communication skills, able to engage senior leadership and cross‑functional partners Experience mentoring engineers and shaping engineering culture Bonus: Experience designing real‑time, high‑throughput data platforms Expertise with AWS serverless, Kubernetes, or distributed messaging systems Experience in developer platform engineering or large‑scale API ecosystems Prior contributions to company‑wide architectural standards Experience using AI tools (Cursor, GitHub Copilot) to enhance engineering velocity Primary Tech Stack: Note: The stack may vary depending on the team. We are hiring across multiple product lines. JavaScript, TypeScript Node.js PostgreSQL, MySQL, Redis, Document/MongoDB, AuroraDB SQS, Event Bridge AWS (Lambda, SQS, EventBridge etc.) React, SPAs GraphQL OUR OFFER A collaborative global environment with engineering teams across Europe, Asia, and the US. Flexibility and autonomy to manage your work and balance priorities. A vibrant, inclusive community, including Women in Tech and Pride groups. Access to the Global Employee Assistance Programme . Subscriptions to Calm and Reulay for wellbeing and resilience. The autonomy and trust expected of Staff‑level leadership Online training resources and continuous learning opportunities. Flexible working hours and hybrid work options. OUR RECRUITMENT PROCESS Initial Screening A short conversation with our Talent Acquisition Partner to learn more about your background and expectations. Technical Assessment A brief take‑home task to demonstrate your technical skills. Technical Interview A deep dive into your solution and a conversation with the technical team and Hiring Manager. Onsite Interview (if needed) Meet the local team and tour our office. Final Steps Receive feedback and if selected, an offer to join us. Don’t meet every single requirement?  At Sportradar we are dedicated to building a diverse, inclusive and authentic workplace, so if you’re excited about this role but your experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyways. You may be just the right candidate for this or other roles. 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 role involves developing and maintaining high-quality React Native mobile applications for iOS and Android, supporting major gaming brands. The position focuses on delivering performant, user-friendly apps and contributing to new product launches and market expansions. It requires strong mobile expertise and collaboration within an international team. 🗂️ Requirements: Minimum 5 years of mobile development experience for Android and iOS, Strong experience with React Native, Proficiency in TypeScript, Strong understanding of core JavaScript concepts, Experience with cloud integrations, Experience working with REST APIs, Experience with GraphQL, Experience with Firebase, Experience with Datadog, Experience with version control systems 📃 Skills: React, ReactNative, TypeScript, JavaScript, REST, GraphQL, Firebase, Datadog, Git, Cloud 🏢 Description: ABOUT THE ROLE Join our team of skilled developers working on mobile applications for top LeoVegas brands like BetMGM, BetUK, and Expekt. With offices across Europe in Sweden, Poland, Spain, and the UK, we create high-performance and innovative solutions for both iOS and Android platforms. We’re looking for a React Native Developer with a mobile-first mindset and an understanding of native development to help drive our projects forward. We are expanding our React Native team in Poland and are searching for talented engineers who are passionate about mobile development and eager to build innovative gaming experiences. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality React native applications for both iOS and Android platforms Ensure a smooth, engaging, and intuitive user experience Work on apps for LeoVegas brands such as BetMGM, BetUK, and Expekt Improve and enhance applications with a strong product focus Contribute to launching new brands and expanding into new markets OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS At least 5 years of experience working as a mobile developer for Android and iOS Strong experience with React Native Proficiency in TypeScript Good understanding of core JavaScript principles and concepts Experience with cloud integrations Experience with Rest API, Datadog, GraphQL, Firebase and version control NICE TO HAVES Experience with Kotlin, Objective-C or Swift Experience writing Unit Tests Hands-on experience optimizing mobile performance Experience with CI/CD integrations 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 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 offices worldwide. What we offer: you can work in a hybrid model , we would like you to show up in our Warsaw office three times a 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"/14'' + smartphone (iPhone 15 or Samsung Galaxy S24 - it’s your choice). Our office: located in the centre of Warsaw (Królewska 16) bike parking 🚲 chillout zones (we have a billiard table too! 🎱) free snacks 🥜 company breakfast every Monday 🥪 Our recruitment process: 45-minute phone/Zoom call with our recruiter 90-minutes technical interview max. 40 min online personality and logic test (not live) 1-hour cultural fit interview **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/

🏢 Summary: The offer is for a React Native Developer to build and maintain high-performance mobile applications for iOS and Android within leading gaming brands. The role focuses on delivering scalable, user-centric solutions, enhancing existing apps, and supporting new market launches. It requires strong cross-platform mobile expertise and collaboration in an agile environment. 🗂️ Requirements: Minimum 5 years experience in mobile development for Android and iOS, Strong commercial experience with React Native, Proficiency in TypeScript, Strong knowledge of core JavaScript principles, Experience with cloud integrations, Experience working with REST APIs, Experience with GraphQL, Experience with Firebase, Experience with Datadog, Experience with version control systems 📃 Skills: ReactNative, TypeScript, JavaScript, REST, GraphQL, Firebase, Datadog, Git, Android, iOS, Cloud 🏢 Description: ABOUT THE ROLE Join our team of skilled developers working on mobile applications for top LeoVegas brands like BetMGM, BetUK, and Expekt. With offices across Europe in Sweden, Poland, Spain, and the UK, we create high-performance and innovative solutions for both iOS and Android platforms. We’re looking for a React Native Developer with a mobile-first mindset and an understanding of native development to help drive our projects forward. We are expanding our React Native team in Poland and are searching for talented engineers who are passionate about mobile development and eager to build innovative gaming experiences. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality React native applications for both iOS and Android platforms Ensure a smooth, engaging, and intuitive user experience Work on apps for LeoVegas brands such as BetMGM, BetUK, and Expekt Improve and enhance applications with a strong product focus Contribute to launching new brands and expanding into new markets OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS At least 5 years of experience working as a mobile developer for Android and iOS Strong experience with React Native Proficiency in TypeScript Good understanding of core JavaScript principles and concepts Experience with cloud integrations Experience with Rest API, Datadog, GraphQL, Firebase and version control NICE TO HAVES Experience with Kotlin, Objective-C or Swift Experience writing Unit Tests Hands-on experience optimizing mobile performance Experience with CI/CD integrations 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 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 offices worldwide. What we offer: you can work in a hybrid model , we would like you to show up in our Warsaw office three times a 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"/14'' + smartphone (iPhone 15 or Samsung Galaxy S24 - it’s your choice). Our office: located in the centre of Warsaw (Królewska 16) bike parking 🚲 chillout zones (we have a billiard table too! 🎱) free snacks 🥜 company breakfast every Monday 🥪 Our recruitment process: 45-minute phone/Zoom call with our recruiter 90-minutes technical interview max. 40 min online personality and logic test (not live) 1-hour cultural fit interview **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/