Senior Backend Engineer - Core

🏢 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 the Markets Platform Team, where you will play a crucial role in enhancing the global customer onboarding process and developing responsible gaming features. Your work will ensure a seamless, secure, and enjoyable experience for customers across multiple brands. In this position, you will focus on refining the onboarding journey and promoting responsible gaming. The mission is to create a safe gaming environment where players can set healthy limits on their gambling habits. The team leverages 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 (unit, e2e, integration) and updating documentation. • Participating in architectural discussions and suggesting ideas for technical improvements. • Collaborating 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 • Minimum 3 years of experience using Java and Spring Boot framework, or similar experience in object-oriented languages such as C#, C++, Python, or PHP with willingness to learn Java. • Experience with SQL and relational databases. • Familiarity 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. BENEFITS • Hybrid work policy. • 4 weeks of Workation (T&C apply). • Benefits package with cafeteria platform access including private medical care, insurance, and sports card. • Training budget. • ICAS assistance program. • Complimentary snacks, drinks, and Monday breakfasts in the office. • Team and office social events throughout the year. • Free parking for bicycles and motorcycles. • Free gym in the building. • Equipment provided: MacBook Pro and smartphone. As the company working language is English, CVs should be submitted in English.

🏢 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: Frontend JavaScript Engineer role focused on developing and maintaining high-quality web applications for a large-scale igaming platform. The position involves building new features, enhancing user experience, and collaborating with cross-functional teams to deliver and expand frontend products across multiple markets. The engineer will drive frontend development using modern JavaScript technologies in a microservices environment. 🗂️ Requirements: Proven experience with JavaScript, Good knowledge of GraphQL, Commercial experience with React, Commercial experience with TypeScript, Experience with Next.js, Working proficiency with Node.js, Experience working with microservices architecture 📃 Skills: JavaScript, GraphQL, React, TypeScript, Next.js, Node.js, Microservices, OpenAPI, BigQuery 🏢 Description: ABOUT THE ROLE We are looking for a passionate and experienced self-driven JavaScript Engineer to join in on our mission to deliver the greatest igaming experience to our customers. As a part of our multinational frontend team, you would be an important cog in the machinery, creating new features for and maintaining the full product of LeoVegas.com . In close collaboration with product managers, designers and our backend peers, we get to work with a broad variety of initiatives: everything from responsible gaming and payments to the casino lobby layout and new market entries. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality JavaScript applications Ensure a smooth and engaging user experience You will be responsible for driving the development of most of the frontend features of Leovegas.com Improve and maintain the applications with a product focus Contribute to launching new brands and brand expansions into new territories OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS Proven experience with Javascript Good knowledge of GraphQL Working experience with React and Typescript (Next.js) Working proficiency with Node.js and Microservices NICE TO HAVES Experience with OpenAPI Experience with BigQuery 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) 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. 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 Engineer role focused on transforming a mission-critical e-commerce domain supporting subscriptions and purchasing journeys for millions of users. The position centers on migrating a monolithic system to scalable microservices, improving performance and reliability, and shaping the future architecture of a global platform. Engineers will work with event-driven systems and modern AI tools while owning solutions end-to-end. 🗂️ Requirements: 5+ years of professional backend engineering experience, Strong experience designing and operating microservices architectures, Experience modernising legacy systems and decomposing monoliths, Solid understanding of distributed systems and scalable backend design, Commercial experience with Go, Java, Kotlin or Scala, Hands-on experience with Kafka or similar event-streaming technologies, Hands-on experience with PostgreSQL, Hands-on experience with Docker and Kubernetes, Experience with CI/CD pipelines, Practical experience using AI coding assistants (Claude Code, Cursor, Copilot or similar), Ability to review and validate AI-generated code, Comfortable owning solutions from idea to production 📃 Skills: Go, Golang, Java, Kotlin, Scala, Kafka, PostgreSQL, Docker, Kubernetes, CI/CD, GraphQL, DDD, TDD, BDD, Microservices 🏢 Description: Join a global e-commerce technology organisation serving millions of customers across multiple international markets. As a Senior Backend Engineer, you will become part of a team responsible for one of the company's most critical customer-facing domains. The platform supports customer subscriptions, plans, and purchasing journeys used daily by millions of users. This is not a maintenance role. The team is actively transforming a mission-critical domain, modernising legacy systems, reducing technical debt, and building the next generation of scalable services that will support future growth. You will play a key role in migrating core functionality from a monolithic architecture to modern microservices while helping shape the future architecture of a global platform. What You'll Do Build & Scale Core Services Design, develop, and maintain scalable backend services within a distributed microservices architecture. Build reliable systems supporting millions of customer interactions. Improve performance, reliability, and scalability across critical customer-facing services. Drive Modernisation Lead the migration of key business domains from monolithic systems to modern microservices. Reduce technical debt and improve long-term maintainability. Design solutions that support future platform growth. Shape Architecture Participate in architecture discussions and technical decision-making. Design orchestration layers supporting complex customer journeys and business processes. Help define engineering standards and best practices. Work with Event-Driven Systems Build and operate services powered by event-driven architectures. Work extensively with Kafka and real-time lifecycle events. Design resilient and observable distributed systems. Raise Engineering Standards Conduct code reviews and support other engineers through technical guidance. Promote best practices across software development, testing, deployment, and observability. Contribute to a strong culture of ownership and continuous improvement. AI-Powered Engineering Use modern AI tools and coding agents throughout the software development lifecycle. Leverage AI for onboarding, architecture exploration, implementation, testing, debugging, and productivity improvements. Apply engineering judgement to validate, verify, and safely integrate AI-generated outputs. What We're Looking For Backend Engineering Expertise 5+ years of professional backend engineering experience. Strong experience designing and operating microservices architectures. Experience modernising legacy systems and decomposing monoliths. Solid understanding of distributed systems and scalable backend design. Technical Stack Commercial experience with Go (Golang), Java, Kotlin or Scala Engineers coming from a JVM background should be open to working in a Go-driven environment. Hands-on experience with: Kafka or similar event-streaming technologies PostgreSQL Docker Kubernetes CI/CD pipelines Product & Ownership Mindset Comfortable owning solutions from idea through production. Strong problem-solving skills and ability to make technical trade-offs. Experience collaborating with product, business, and engineering stakeholders. AI Fluency Practical experience using AI coding assistants such as Claude Code, Cursor, Copilot, or similar tools. Understanding of how context, prompts, constraints, and validation influence AI-generated outputs. Ability to critically review and verify AI-generated solutions. Nice to Have Experience with subscription-based products. Experience in e-commerce environments. GraphQL knowledge. Familiarity with DDD, TDD, and BDD practices. What We Offer Opportunity to build systems used by millions of customers globally. High-impact engineering work with significant architectural ownership. International collaboration across distributed engineering teams. End-to-end ownership from idea to production. Hybrid working model (3 days per week in the Warsaw office). B2B cooperation model. 30 days of paid annual leave. Modern office located in Warsaw city centre. Continuous learning and professional growth opportunities.

🏢 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: 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: Senior Backend Engineer role focused on building and scaling backend microservices for consumer-facing platforms and internal data privacy systems. The position involves developing distributed, event-driven systems supporting personalization, search, and regulatory compliance at scale. It requires strong experience in JVM technologies and cloud-native environments. 🗂️ Requirements: Strong commercial experience with JVM-based languages (Java or Scala), Experience with Kotlin or willingness to learn, Solid understanding of microservices architecture, Experience with event-driven systems, Experience with Docker and Kubernetes, Hands-on CI/CD experience in production, Experience with unit and integration testing, Experience with relational databases and SQL, Ability to design and maintain scalable distributed systems 📃 Skills: Java, Scala, Kotlin, JVM, Microservices, Docker, Kubernetes, CI/CD, SQL, PostgreSQL, AWS, Terraform, Elasticsearch, MongoDB, GraphQL, Go, Python 🏢 Description: We are looking for a Senior Backend Engineer to join a fast-growing product organization working on consumer-facing platforms and internal data systems. This role is suited for an experienced backend engineer who is comfortable building scalable, reliable services across different domains, from customer-facing journeys to data privacy and compliance infrastructure. About the Project: You will contribute to backend systems that power core customer experiences and internal platform initiatives. Depending on the team, this includes scaling a menu and personalization platform for high-traffic consumer applications, or building a centralized Data Privacy Service handling regulatory compliance (GDPR, CCPA) and Data Subject Requests at scale. Both streams require strong engineering fundamentals, a microservices mindset, and the ability to deliver in complex, distributed environments. Responsibilities: Design, develop, and maintain scalable backend microservices across consumer or data platform domains; Build systems supporting search, personalization, customer targeting, and engagement; Develop and operate services ensuring regulatory compliance and secure data handling (GDPR, CCPA); Work with event-driven architectures and distributed systems; Contribute to CI/CD pipelines, testing practices, and overall engineering quality; Collaborate with product and engineering teams to deliver reliable and performant solutions. Qualifications: Strong commercial experience with JVM-based languages (Java, Scala, or similar); Experience with Kotlin, or willingness to learn it on the project; Solid understanding of microservices architecture and event-driven systems; Experience with Docker and Kubernetes; Hands-on CI/CD experience in a production environment; Experience with unit and integration testing; Familiarity with relational databases (e.g. PostgreSQL) and SQL; AWS and Terraform experience is a plus; Experience with Elasticsearch, MongoDB, or GraphQL is a plus; Go or Python knowledge is a nice to have; Background in e-commerce, subscription platforms, or data privacy systems is a plus. Recruitment Process: Initial interview with our recruitment team; Interview with the hiring manager; Live Coding Assessment; Meeting with the Project Manager. Inuits Sp. z o.o. is registered in the National Register of Employment Agencies (KRAZ) under number 35420.

🏢 Summary: The offer is for a Senior Backend Engineer to design and implement scalable, low-latency backend services supporting global, driver-centric navigation and location intelligence platforms. The role focuses on building resilient APIs and data processing systems that handle real-time and offline data at scale. You will collaborate cross-functionally to deliver high-quality, well-tested services using modern technologies and cloud infrastructure. 🗂️ Requirements: Strong hands-on experience in backend and infrastructure engineering, Proficiency in Kotlin and Java, Experience with Spring Boot for scalable backend systems, Experience designing scalable and performant architectures, Hands-on experience with SQL and NoSQL databases, Experience implementing unit tests and test automation, Experience with CI/CD pipelines and code deployment, Knowledge of containerization and orchestration systems, Experience with cloud platforms, preferably AWS 📃 Skills: Kotlin, Java, Spring, SpringBoot, SQL, NoSQL, CI/CD, Docker, Kubernetes, AWS 🏢 Description: What's the role? We are looking for a Senior Backend Engineer to play a key role in the design and implementation of backend services that support driver-centric experiences across platforms. The platform enables optimized routing, location intelligence, and reliable access to real-time and offline data, designed for frequent, daily use at global scale. Backend services process, store, and distribute data, and derive insights from aggregated usage patterns to improve system behavior and relevance, with a strong focus on scalability, low latency, resilience, and operational consistency. What you will do? As part of our cross functional team, you will help us developing scalable services, design APIs together with mobile and frontend engineers. You will work closely with designers, architects, engineers and product manager to find the best solution, thereby shaping our apps' offering. Work with modern technology on a tight, well tested code base. Make pragmatic technical decisions and move fast without sacrificing quality. Together with the team, you'll establish best practices, conduct code reviews, and implement test automation strategies that prevent distractions and maintain reliability. Who are you? Strong expertise with hands-on experience in backend and infrastructure engineering Excellent knowledge of Kotlin, Java, and Spring Boot, building scalable backend systems Solid architectural skills with experience building scalable and performant services serving millions of users worldwide Hands on experience with DB technologies (SQL/NoSQL) Experience in implementing unit tests and test automation Hands-on knowledge of CI/CD processes and code deployment Good understanding of container and container orchestration systems, like Docker and K8s Experience with Cloud Platforms preferably with AWS. Excellent problem-solving skills and a pragmatic, product-oriented mindset Clear communication skills and ability to work effectively across teams Able to resolve ambiguity and work with little direction Experience with automotive, navigation, mapping, or social applications is a plus, but not required. What we offer: Work on on globally deployed automotive navigation and mapping products Collaboration with an experienced, international engineering organization Truly international team of fantastic & talented people from 60+ countries worldwide, working from strong tech hubs located in Europe, the US, and Asia, along with multiple smaller locations Flexible working hours & a flexible approach to office vs. remote work Medical coverage for you and your family Yearly variable bonus This role is eligible for the Creative Tax Incentive scheme in Poland (KUP) Option to work on a B2B contract (please note: benefits, bonus and KUP do not apply in this case) Life at HERE in Poland comes with a competitive total rewards package designed to support your health, wellbeing, and performance. This includes a base salary, a Short-Term Incentive (STI) bonus (percentage based on role), a creative tax advantage for eligible positions, private medical care (including dental), life insurance, a meal allowance, vision reimbursement, a remote work allowance (if applicable), access to MyBenefit and Multisport programs, and various wellbeing initiatives. Paid time off, sick leave, and parental leave are provided in accordance with the Polish Labor Code. Who are we? HERE Technologies is a location data and technology platform company. We empower our customers to achieve better outcomes – from helping a city manage its infrastructure or a business optimize its assets to guiding drivers to their destination safely. At HERE we take it upon ourselves to be the change we wish to see. We create solutions that fuel innovation, provide opportunity and foster inclusion to improve people’s lives. If you are inspired by an open world and driven to create positive change, join us. Learn more about us on our YouTube Channel. Change is HERE. Apply Now. As part of HERE Technologies employment process, candidates will be required to successfully complete a pre-employment screening process. This offer and any related claims are subject to the successful completion of a pre-employment screening. This will involve employment, education, and criminal verification if applicable. HERE is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, age, gender identity, sexual orientation, marital status, parental status, religion, sex, national origin, disability, veteran status, and other legally protected characteristics.