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Senior Full Stack Engineer (Node.js)

Fullstack Developer • Senior • Remote • Full-time • European Union EU/EMEA

A5 Labs builds AI-driven online gaming experiences and is looking for a Senior Full Stack Engineer to drive technical initiatives across teams. About 80% of the work focuses on backend solutions.

Responsibilities

  • ▹Build highly available and performant gaming applications
  • ▹Build scalable backend systems for global audiences
  • ▹Build MVPs and production-ready solutions for online poker games
  • ▹Build integration systems with various service providers
  • ▹Build a robust microservices architecture

Requirements

  • ▹7+ years of full stack development experience (3+ years in a senior or lead role)
  • ▹Strong Node.js expertise
  • ▹Advanced TypeScript/JavaScript knowledge
  • ▹REST APIs, GraphQL, gRPC and WebSockets
  • ▹Testing frameworks (Jest)
  • ▹Databases (PostgreSQL, MongoDB, DynamoDB)
  • ▹Caching and queues (Redis, RabbitMQ, Kafka)
  • ▹High-load and concurrent systems
  • ▹Microservices and distributed systems
  • ▹Security best practices

Nice to have

  • ▹DevOps and CI/CD pipelines
  • ▹Cloud platform expertise (AWS, Cloudflare)
  • ▹Background in real-time multiplayer gaming or high-concurrency, high-load applications

Soft skills

Technical leadership across teams

What we offer

  • ▹Remote-first environment
  • ▹Opportunity to work on innovative AI projects
  • ▹Collaboration with experts in AI and game development
  • ▹Flexible work environment
  • ▹Career growth in a fast-growing company
  • ▹Supportive and dynamic team

About the company

AceGuardian at A5 Labs combines gaming expertise with AI technology. The team builds advanced AI agents through reinforcement learning, game-solving, fine-tuning and planning, tackling challenges like anti-cheat detection and optimal gameplay.

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