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Vacancy in Poland: Senior Backend Developer (Payments & Fraud) Salary

Our client’s mission is to create engaging, high-quality mobile gaming experiences that entertain millions of players worldwide. Specializing in skill-based games that combine fun, competition, and real rewards, they foster a strong sense of community and engagement. A key part of their platform is tournaments where players can compete, improve, and connect with others.

As they continue to grow, our client is looking for a Senior Backend Developer to join their Payments & Fraud team. In this role, you will work in a fast-paced, highly technical environment, designing and developing scalable, resilient, and high-performance backend services that power the Payments and Fraud ecosystem.

Responsibilities:

  • Develop and maintain a high-scale backend platform serving millions of users.

  • Design and implement end-to-end solutions to reduce time-to-market and improve system efficiency.

  • Write high-quality, performant, and maintainable code following industry best practices.

  • Experiment with new technologies, tools, and third-party frameworks to drive innovation.

  • Mentor new team members and contribute to a culture of engineering excellence.

Tech Stack:

  • AWS, Kubernetes, Node.js, TypeScript, Redis, MySQL

Requirements:

  • 6+ years of experience in server-side development and architecture.

  • Hands-on experience with cloud-based architectures and scalable backend systems.

  • Proficiency in Node.js or another major backend language.

  • Passion for learning and adopting new technologies.

  • A can-do approach, problem-solving mindset, and ability to thrive in a fast-paced environment.

What We Offer:

  • Comfortable office in central Warsaw with all the necessary tools (MacBook, external monitor, etc.).

  • Luxmed medical services.

  • Monthly Uber Eats voucher.

  • Multisport card to keep you active.

  • Monthly Happy Hours to unwind with the team.

  • Snacks available all day long.

  • Hybrid work model offering flexibility and work-life balance.

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