Design and implement backend game engine and RNG systems for slots and table games. Build deterministic, auditable, high-concurrency real-time gameplay systems, manage bet lifecycle, integrate wallets/transactions, optimize performance, and develop simulation/test systems for RTP validation while collaborating with frontend and game client teams.
Job Title: Senior Backend Engineer (Node.js) – Game Engine / RNG Systems
Location: On-site
Experience: 5–10 years
Employment Type: Full-time
Summary: Join our dynamic team at Kerma Games as a Senior Backend Engineer, where you'll focus on developing robust game engine and RNG systems for in-house slot and live table games. This role emphasizes system design, performance, and reliability in a high-concurrency environment, offering opportunities for growth and impact in a real-money gaming context.
Responsibilities:
- Design and develop game engine logic for slots and table games.
- Work on RNG systems, ensuring fairness and determinism.
- Build deterministic and auditable systems for real-time gameplay.
- Develop and manage real-time gameplay systems, including game loops and state management.
- Oversee the bet lifecycle from placement through outcome to payout.
- Integrate and improve wallet and transaction systems.
- Enhance the performance of high-concurrency, low-latency systems.
- Collaborate with frontend and game client teams.
- Develop simulation and testing systems for RTP validation.
Required Qualifications:
- Strong experience with Node.js backend development.
- Experience with event-driven or real-time systems.
- Understanding of asynchronous programming.
- Familiarity with high-concurrency or performance-critical systems.
- Basic understanding of probability, logic systems, or simulations.
- Experience with databases and caching systems, preferably Redis.
Preferred Experience:
- Experience in gaming, iGaming, or similar domains.
- Exposure to RNG, simulations, or state machines.
- Familiarity with cloud platforms and containerised environments.
Growth and Learning Emphasis:
- Opportunity to work on game engine systems and real-time architectures.
- Exposure to RNG systems, probability models, and scalable backend design.
- Collaboration with cross-functional teams.
Benefits and Work Environment:
- Flexible working hours or remote options.
- Learning and development support.
- Health and wellness benefits.
- Inclusive and collaborative work culture.
- Clear growth and ownership opportunities.
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What you need to know about the Kolkata Tech Scene
When considering the industries shaping India's tech scene, gaming might not immediately come to mind. However, in the last decade, increased internet usage and greater access to mobile devices have catapulted the industry to new heights, with Kolkata-based companies like Virtualinfocom, Red Apple Technologies and Digitoonz, at the forefront, driving the design and animation of new gaming titles for players.
