July 2, 2026

Backend Engineer - FinTech

Mid • Remote

14 - 16 PLN

Warsaw, Poland

Join the Alliance: Your Expertise, Our Global Impact

Sport Alliance builds technology powering fitness and wellness businesses worldwide — from management platforms and payment solutions to member-facing applications.

We value ownership, collaboration, and people who challenge how things can work better. Our teams are encouraged to share ideas, shape decisions, and contribute across functions.

As we continue to evolve globally, we foster a culture where initiative is valued and expertise is respected.

Please note: this role is for an initial 12-month period.

Your position in our team

  • You enhance our payment software solutions by integrating payment service providers (PSP) as part of a cross-functional team

  • You develop the payment domain of our market-leading B2B fitness SaaS platform in close cooperation with product management and the developer team using JVM technologies and frameworks like Spring Boot.

  • You create high-quality software components in an agile environment and contribute your ideas within flat hierarchies

  • You develop and enhance resilient, maintainable microservices in an agile and autonomous environment and its integration with our SaaS platform

Your profile

  • You have at least 3 years of professional experience in developing cloud-based software using JVM technologies, with knowledge of frameworks like Spring Boot and Hibernate.

  • You have experience in working on a scalable, cloud-native platform

  • You focus on delivering high-quality, reliable components with fast deployment cycles, continuously improving yourself

  • You stay up to date with programming trends, thrive in collaborative environments, and communicate confidently in English. You apply proven design patterns pragmatically to build maintainable and efficient backend systems

Your Benefits With Us

  • Benefits package – private medical care and a sports card to support your health and well-being

  • Access to Udemy Business – boost your skills with thousands of high-quality online courses

  • Flexible work model – work fully remotely or combine it with on-site collaboration at our modern office in Warsaw

  • Employment options tailored to you – pick the contract type that best fits your needs

  • Flexible Working Hours – adjust your schedule to fit your lifestyle

  • Unique experience in the Fitness and SaaS industry – join a market-leading company in a dynamic, fast-growing industry

  • International team – work alongside talented colleagues from around the world in a diverse and inclusive environment

  • Unforgettable company events – take part in engaging team-building activities and memorable celebrations

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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!

Technology

PKO BANK POLSKI S.A.

Programistka/ Programista Fullstack

Mid

Hybrid

Warsaw, Poland

🏢 Summary: Oferta dotyczy rozwoju i utrzymania aplikacji oraz serwisów z wykorzystaniem technologii Java, JavaScript i Python, wraz z tworzeniem testów oraz dbaniem o jakość i wydajność oprogramowania. Rola obejmuje udział w projektowaniu rozwiązań, integracji systemów oraz pracy zespołowej w środowisku projektowym. Pracodawca oferuje stabilne zatrudnienie, szeroki pakiet benefitów oraz możliwość pracy z różnorodnymi technologiami. 🗂️ Requirements: Komercyjne doświadczenie z JavaScript, Znajomość ES6+, Znajomość HTML5, Znajomość CSS3, Praktyczna znajomość Java, Praktyczna znajomość Spring, Praktyczna znajomość Hibernate, Znajomość SQL, Doświadczenie w Python, Znajomość relacyjnych baz danych, Umiejętność projektowania i optymalizacji zapytań, Znajomość Git, Znajomość Maven, Znajomość Jira, Znajomość Jenkins, Znajomość SOAP, Znajomość REST, Znajomość XML, Znajomość JSON, Wykształcenie wyższe informatyczne lub pokrewne, Umiejętność pracy zespołowej 📃 Skills: JavaScript, ES6, HTML5, CSS3, Java, Spring, Hibernate, SQL, Python, Git, Maven, Jira, Jenkins, SOAP, REST, XML, JSON 🏢 Description: Na co dzień w naszym zespole: implementujesz nowe lub modyfikujesz istniejące aplikacje/serwisy, tworzysz testy jednostkowe i integracyjne dla budowanych aplikacji/serwisów, dbasz o wysoką jakość oprogramowania (funkcjonalność, wydajność, niezawodność), dokumentujesz zaimplementowane rozwiązania, analizujesz możliwe rozwiązania, bierzesz udział w pracach projektowych. To stanowisko może być Twoje, jeśli: posiadasz komercyjne doświadczenie w tworzeniu aplikacji z wykorzystaniem JavaScript (ES6+), HTML5 oraz CSS3, masz praktyczną wiedzę w zakresie programowania w Java, Spring Boot, Hibernate oraz SQL, posiadasz doświadczenie w tworzeniu i rozwijaniu aplikacji w języku Python, dobrze znasz relacyjne bazy danych oraz zasady projektowania i optymalizacji zapytań, swobodnie posługujesz się narzędziami wspierającymi proces wytwarzania oprogramowania, takimi jak Git, Maven, Jira i Jenkins, znasz i stosujesz standardy oraz technologie integracyjne, w tym SOAP, REST, XML i JSON, posiadasz wykształcenie wyższe o profilu informatycznym lub pokrewnym, efektywnie współpracujesz z zespołem w środowisku projektowym, dzieląc się wiedzą i wspierając realizację wspólnych celów. Dodatkowym atutem będzie: doświadczenie w bankowości. Dołączając do nas zyskujesz: pakiet benefitów, w tym prywatną opiekę medyczną, Pracowniczy Program Emerytalny, System Kafeteryjny MyBenefit, kartę Multisport, atrakcyjną ofertę produktów bankowych, w tym kredytu hipotecznego, dedykowany system szkoleń, możliwość zdobywania doświadczenia, poznania różnorodnej technologii, w największej instytucji finansowej w kraju, stabilizację zatrudnienia – umowę o pracę, dedykowany system premiowy.