Middle+ Back-End Developer (CCTV)
- Рівень:
- middle
- Джерело:
- djinni.co
Що робити
- Design, develop, and maintain the betting engine using Node.js, TypeScript, and Express 5, including round lifecycle management, outcome calculation, payouts, and idempotent transaction handling.
- Build and optimize the real-time communication layer using WebSocket/Socket.IO with synchronized broadcast delays, bet-lock mechanisms, and front-running protection.
- Develop event-driven pipelines with Kafka/KafkaJS and build analytical and anti-fraud data flows using ClickHouse.
- Integrate HLS (.m3u8) video stream parsing and computer vision services, and implement Provably Fair (commit-reveal) mechanisms.
- Work with PostgreSQL/Prisma and Redis for data storage, caching, round state management, and rate limiting.
Що очікуємо
- 3+ years of back-end development experience with Node.js and TypeScript.
- Hands-on experience building high-load, real-time services using WebSocket technologies.
- Strong knowledge of PostgreSQL and Redis, including transactions, idempotency, concurrency, and consistency.
- Experience with message brokers such as Kafka or similar event-streaming platforms.
- Solid understanding of service reliability, logging, monitoring, testing, and fault tolerance.
Що пропонуємо
- Experience with ClickHouse or other analytical/column-oriented databases.
- Experience implementing anti-fraud systems.
- Experience working with HLS/RTMP video streaming.
- Familiarity with computer vision technologies.
- Knowledge of Provably Fair concepts and cryptographic mechanisms (HMAC).
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