Backend Engineer (Node.js, NestJS)

About the role

We are seeking a Backend Engineer to design, build and maintain the server‑side services that power our mobile gaming platform. You will work on critical systems such as wallets, rewards, transactions and payouts, collaborating with senior engineers, product managers and mobile developers.

Key responsibilities

• Develop and maintain backend services using Node.js and NestJS.
• Design and implement APIs for wallet, rewards, transaction and other platform features.
• Build and optimise ledger and payout workflows, ensuring data accuracy and reliable failure recovery.
• Optimise PostgreSQL queries, indexes and overall database performance.
• Implement Redis caching and improve system performance.
• Work with background jobs and message queues (Bull, SQS, Kafka) for asynchronous processing.
• Write clean, testable code and create unit/integration tests with Jest.
• Debug production issues, monitor performance and contribute to system reliability.
• Participate in code reviews and technical documentation.

Required profile

• 2–4 years of professional backend development experience.
• Strong proficiency in Node.js and TypeScript.
• Experience with NestJS or similar frameworks.
• Solid understanding of PostgreSQL, including query optimisation and transactions.
• Hands‑on experience with Redis for caching.
• Familiarity with message‑queue systems such as Bull, SQS or Kafka.
• Knowledge of AWS services (ECS, RDS, ElastiCache) and Git workflows.
• Ability to write unit and integration tests using Jest or comparable tools.

Required skills

• Node.js
• TypeScript
• NestJS
• PostgreSQL
• Redis
• AWS (ECS, RDS, ElastiCache)
• Message queues (Bull, BullMQ, SQS, Kafka)
• REST APIs
• Git
• Jest