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Senior Backend EngineerRainfall Ventures • Poland, Ohio, United States
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Senior Backend Engineer

Rainfall Ventures
  • US
    Poland, Ohio, United States
  • US
    Poland, Ohio, United States
Jetzt Bewerben

Über

Senior Backend Engineer
R&D
Poland
Senior
Full-time
Description At Papaya, we believe in the power of play. We create skill-based mobile games that combine fun, competition, and real rewards — enjoyed by millions of players worldwide. We're building a platform where players join tournaments, connect with others, and keep coming back. With a strong focus on innovation, scalability, and user experience, we aim to redefine what mobile gaming can offer.
We’re a fast-growing, profitable company with the spirit of a startup — no corporate bureaucracy, no endless layers of approvals. Everyone on the team makes a real impact on the product, and your voice truly matters.
The Core R&D group is a key part of Papaya Gaming’s Platform division, responsible for developing and maintaining core products that shape the player’s journey. From registration, account management, payments, and restrictions to tournaments and matchmaking, the team ensures a seamless and scalable gaming experience for millions of players worldwide.
We handle payments and fraud prevention across the platform. The team integrates with multiple banking systems, manages secure transactions, and develops fraud detection mechanisms. Supporting millions of players, Typhoon ensures smooth and safe financial operations within Papaya’s ecosystem.
We are looking for an experienced Backend Developer to join our Payments & Fraud team and help build high-scale, mission-critical backend solutions. 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.
We offer a hybrid work model with flexibility at our growing Warsaw office.
Responsibilities
Develop and maintain a high-scale backend platform serving millions of users.
Design and implement end-to-end solutions that 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 in cloud-based architectures and scalable backend systems.
Proficiency in Node.js or another major backend language.
Experience or strong interest in agentic coding and AI-assisted development tools.
Passion for learning and adopting new technologies.
A can-do approach, problem-solving mindset, and ability to work in a fast-paced environment.
What We Offer
Join a profitable company with the heart of a startup – stable, growing, and full of energy.
Enjoy a hybrid work model with flexibility and a growing Warsaw office.
Receive competitive compensation tailored to the Polish market - B2B Service agreement
Comfortable office in central Warsaw, equipped with all the necessary tools to conquer the universe
Luxmed Medical services
Monthly 'Pyszne.pl' voucher
Multisport card
Monthly Happy Hours
Snacks and Breakfasts
#J-18808-Ljbffr
  • Poland, Ohio, United States

Sprachkenntnisse

  • English
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