Middle+ Back-End Developer (Slots) - iGaming/Casino
- Зарплата:
- $2 800 - $3 500 на місяць
- Рівень:
- middle
- Джерело:
- djinni.co
Що робити
- Design the game engine using Node.js, TypeScript, and Fastify: round state machine, outcome taxonomy, autoplay, bet cancellation.
- Implement Provably Fair (HMAC-SHA256) with server-side generation and verification, plus BigInt arithmetic for money calculations.
- Develop the wallet and transactions: multi-currency support, deposits/withdrawals, idempotency, balance consistency.
- Build platform logic: KYC, VIP levels, affiliate program, leaderboards, notifications.
- Integrate an external betting API (Axios: auto-refresh, circuit breaker), real-time layer (WebSocket/Socket.IO), and authorization via Firebase.
Що очікуємо
- 3+ years of back-end development experience with Node.js and TypeScript (Fastify/Express preferred).
- Experience designing transactional logic (balances, payments, idempotency) and working with PostgreSQL.
- Understanding of deterministic computation and money-calculation precision (BigInt / decimal), state machines.
- Experience integrating external APIs and real-time communication.
- Middle+: autonomy, testing, code review, attention to security.
Що пропонуємо
- Firebase Auth (2FA TOTP), experience with KYC/AML, VIP/affiliate systems.
- Familiarity with regulated betting and high-load financial systems.
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