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# Backend Developer (Node.js)

- **Company:** Optiplay
- **Location:** Germany (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Code Review, Continuous Integration, DevOps, Fault Tolerance, Video Game Development, PostgreSQL, Load Testing, Message Broker, Node.Js, Software Architecture, RabbitMQ, Redis, Mockito, Simple Object Access Protocol (SOAP), Systems Integration, TypeScript, Extensible Markup Language (XML), Grafana, Backend, Git, Integration Tests, Kubernetes, Apache Kafka, Docker
- **Published:** August 19, 2026
- **Apply:** https://www.adzuna.de/details/5845438806

## About the Role

* 3-5+ years of backend development experience with Node.js + TypeScript, including ownership of non-trivial systems, * Solid understanding of modular, service-oriented backend architecture, ideally from enterprise or scale-up environments;
 * Practical experience with message brokers (RabbitMQ or Kafka) and event-driven, queue-based design;
 * Strong grasp of integration testing approaches: contract testing, mocking, e2e, and stress testing;
 * Confident with PostgreSQL and Redis, CI/CD, Git, and monitoring/observability tools (Grafana, Loki, Tempo);
 * Comfortable with AWS, Docker, and Kubernetes for containerized deployments.

Nice to have

 * Experience in iGaming, gambling platforms, or RNG/game provider integrations;
 * Familiarity with ArgoCD and GitOps workflows.

## Description

* Design, build, and maintain integrations with casino operators and partner platforms (wallet/transaction APIs, game launch, and reporting contracts), owning the full lifecycle from contract design to production monitoring;
 * Build resilient integration layers: retries, idempotency, timeouts, error mapping, and graceful degradation when a third party misbehaves;
 * Contribute to core backend services and platform features - APIs, messaging flows, data models, shared modules;
 * Take part in slot game development on our game logic platform - implementing game mechanics and mathematics alongside the core team;
 * Define and improve integration testing practices: contract testing, mocking/stubs, e2e, and stress/load testing;
 * Work closely with Game Logic, Product, and DevOps teams to keep integration contracts stable as the platform evolves;
 * Participate in code reviews, technical decisions, and architecture discussions across the backend., * Proven experience designing and maintaining external integrations (REST/HTTP, XML/SOAP, RPC-style, or webhook-based)


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