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Backend Developer (Node.js)

Optiplay

Poland, Poland, Poland Full time June 03, 2026
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Vacancy Description

Requirements

What you bring

  • 5+ years of backend development experience, including ownership of complex systems or features;
  • Strong expertise with Node.js + TypeScript and modern frameworks (Fastify, Nest.js);
  • Advanced knowledge of SQL and NoSQL databases: PostgreSQL, MongoDB, Redis;
  • Solid experience with message brokers (RabbitMQ or Kafka) and queue-based, event-driven design patterns;
  • Deep understanding of distributed systems, microservices, and real-time communication (WebSocket, Socket.io);
  • Experience building high-performance APIs, async flows, caching strategies, and scalable architectures;
  • Confident with CI/CD, Git, automated testing (Jest), and monitoring/observability tools (Grafana, Loki, Tempo).

What you’ll do

  • Own and drive the ba...

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