JavaScript Engineer

🏢 Summary: Mobile Application Engineer role focused on building and maintaining React Native applications for iOS and Android within the gaming and casino domain. The position involves developing new features, improving user experience, and delivering end-to-end solutions in collaboration with backend engineers, product managers, and designers. The engineer will contribute to launching new brands and expanding products into new markets. 🗂️ Requirements: Minimum 5 years of mobile development experience for Android and iOS, Strong experience with React Native or React, Proficiency in TypeScript, Strong understanding of core JavaScript principles, Experience with cloud integrations, Experience with REST APIs, Experience with GraphQL, Experience with Datadog, Experience with Firebase, Experience with version control systems 📃 Skills: React, ReactNative, TypeScript, JavaScript, REST, GraphQL, Datadog, Firebase, CI/CD, Git, Android, iOS, Cloud 🏢 Description: ABOUT THE ROLE We're looking for a Mobile Application Engineer, specializing in React Native, with a mobile-first mindset and an understanding of native development to help drive our projects forward. As a part of the Gaming team, you would be an important cog in the machinery, creating new features for the casino vertical of our sites and its lobby. You will be part of driving a newly created frontend team within Gaming to deliver products and features end to end together with our backend engineers. In close collaboration with product managers, designers and our backend peers, we get to work with a broad variety of initiatives where we are aiming to level up our Casino site to the next level. 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 preferred, will consider React only experience 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 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 1400 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 11 offices worldwide. WHAT WE OFFER 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 15 or Samsung Galaxy S24) 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: 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 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: 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: Engineering Manager role leading a team building internal web applications and APIs in the payments domain, responsible for system reliability, feature delivery, and business-critical initiatives. The position combines people management, technical oversight, and process optimization across SDLC, CI/CD, and incident management. You will drive engineering excellence, mentor developers, and ensure high-quality releases through strong Agile practices. 🗂️ Requirements: 5+ years of experience developing web applications and APIs, Proven experience leading and managing engineering teams, Strong background in Agile software development methodologies, Ability to conduct code reviews and oversee technical discussions, Experience planning and executing sprints and roadmap deliverables, Experience optimizing CI/CD pipelines and DevOps practices, Ability to monitor system health and manage incidents, Strong communication and stakeholder management skills 📃 Skills: Agile, APIs, Web, CI/CD, DevOps, SDLC, QA, Payments, IncidentManagement, RegressionTesting, Automation, KPIs 🏢 Description: ABOUT THE ROLE We're looking for an Engineering Manager to lead a team of engineers building internal tooling and APIs within the payments domain. You’ll be responsible for ensuring system reliability, delivering new features, and driving business-critical initiatives. This area manages web applications and APIs, where you oversee daily operations, drive technical execution, and support team growth across the whole employee lifecycle - hiring & developing talent. YOU WILL BE RESPONSIBLE FOR: Team Management & Support: Run daily standups Hold regular one-on-ones Drive goal setting and career development Lead hiring and onboarding Provide technical guidance and mentorship Track and act on engineering KPIs Technical & Project Oversight: Participate in code reviews and pull request approvals Lead technical discussions and discovery sessions Monitor system health and manage incidents Process & Execution: Plan and execute sprints and roadmap deliverables, ensuring clear timelines and resource alignment Optimize CI/CD pipelines and DevOps practices Work closely with engineering, product, and QA teams Champion Quality in all releases by ensuring proper regression testing and automation coverage in collaboration with QA engineers Enforce incident management processes Report on progress, risks, and changes to stakeholders related to development and operations Strategy & Leadership: Contribute to the engineering, SDLC and QA strategy. Conduct performance reviews and support career growth Maintain strong communication with stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: Essential Skills: Solid engineering background, spending at least 5+ years working as an engineer developing web applications and APIs Proven experience in leading and managing engineering teams Transparent and inspiring leadership style that builds trust Excellent communication skills, with the ability to guide and challenge teams effectively when needed Deep understanding of Agile software development methodologies Nice-to-Have: Experience in payments domain Knowledge of the iGaming industry 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 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: Engineering Manager role leading a team building internal web applications and APIs in the payments domain, ensuring system reliability and delivery of business-critical initiatives. The position combines technical oversight, people management, and process optimization across SDLC, CI/CD, and QA practices. You will drive execution, support team growth, and oversee operational excellence. 🗂️ Requirements: 5+ years experience developing web applications and APIs, Proven experience leading and managing engineering teams, Strong understanding of Agile methodologies, Experience with code reviews and pull request approvals, Experience monitoring system health and managing incidents, Experience planning and executing sprints and roadmaps, Experience optimizing CI/CD pipelines and DevOps practices, Experience ensuring regression testing and automation coverage, Ability to track engineering KPIs and report on technical progress 📃 Skills: Agile, APIs, Web, CI/CD, DevOps, SDLC, QA, Automation, Payments, iGaming 🏢 Description: ABOUT THE ROLE We're looking for an Engineering Manager to lead a team of engineers building internal tooling and APIs within the payments domain. You’ll be responsible for ensuring system reliability, delivering new features, and driving business-critical initiatives. This area manages web applications and APIs, where you oversee daily operations, drive technical execution, and support team growth across the whole employee lifecycle - hiring & developing talent. YOU WILL BE RESPONSIBLE FOR: Team Management & Support: Run daily standups Hold regular one-on-ones Drive goal setting and career development Lead hiring and onboarding Provide technical guidance and mentorship Track and act on engineering KPIs Technical & Project Oversight: Participate in code reviews and pull request approvals Lead technical discussions and discovery sessions Monitor system health and manage incidents Process & Execution: Plan and execute sprints and roadmap deliverables, ensuring clear timelines and resource alignment Optimize CI/CD pipelines and DevOps practices Work closely with engineering, product, and QA teams Champion Quality in all releases by ensuring proper regression testing and automation coverage in collaboration with QA engineers Enforce incident management processes Report on progress, risks, and changes to stakeholders related to development and operations Strategy & Leadership: Contribute to the engineering, SDLC and QA strategy. Conduct performance reviews and support career growth Maintain strong communication with stakeholders OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: Essential Skills: Solid engineering background, spending at least 5+ years working as an engineer developing web applications and APIs Proven experience in leading and managing engineering teams Transparent and inspiring leadership style that builds trust Excellent communication skills, with the ability to guide and challenge teams effectively when needed Deep understanding of Agile software development methodologies Nice-to-Have: Experience in payments domain Knowledge of the iGaming industry 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 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: 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/

🏢 Summary: Senior Backend Engineer role focused on developing and maintaining a large-scale multi-brand gaming platform with microservices architecture and high-volume data processing. The position involves full ownership of backend features, system optimisation, architectural design, and collaboration with QA in an agile environment. The offer includes hybrid work, training budget, workation option, and comprehensive benefits. 🗂️ Requirements: 7+ years of experience with Java, Experience with Spring Boot, Experience with SQL, Experience with Jenkins, Experience with Maven, Experience with Git, Experience with Docker, Experience with Spring, Experience with JUnit, Ability to design and maintain microservices architectures, Experience with backend system optimisation and troubleshooting, English proficiency 📃 Skills: Java, Spring, SpringBoot, SQL, Jenkins, Maven, Git, Docker, JUnit, Kotlin, GCP, Kafka, Microservices, Agile 🏢 Description: ABOUT THE ROLE Are you a skilled Senior Backend Engineer looking to make an impact in a fast-paced and dynamic environment? Join our dynamic Core Platform Team, the backbone of our product ecosystem. We are a crucial part of the Core division, responsible for building, maintaining, and evolving the foundational services and data infrastructure that power our products. Our mission is to provide scalable, reliable, and performant solutions for processing vast amounts of data, supporting various product teams across the company. We tackle exciting challenges in distributed systems, high-volume data streams, and ensuring the stability and performance of critical platform components. We are a growing team of 10 experienced engineers, fostering a culture of collaboration, ownership, and continuous learning. If you're passionate about backend engineering, data processing, and building robust platforms, you'll find a challenging and rewarding environment here. YOU WILL BE RESPONSIBLE FOR: Contributing to the development and architectural design of Rhino, our multi-brand gaming platform built on 230+ microservices. Securing deliveries and helping colleagues with theirs. Maintaining and upgrading our systems and services, identifying and resolving complex technical challenges, optimising existing systems for efficiency, and ensuring data integrity. Take full ownership of features and projects from conceptualisation and design through development, deployment, and monitoring. Working closely with QA and contributing to testing activity in the team. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Minimum 7 years of hands-on experience in Java with Spring Boot. Experience in several of these technologies: SQL, Jenkins, Maven, Git, Docker, Spring, JUnit. NICE TO HAVES Bonus points if you have used Kotlin and  Google Cloud Platform. Knowledge of the messaging platform (Kafka) is a big plus. Knowledge of Agile methodologies. 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. 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