Principal Server Engineer

We’re looking for a Principal Server Engineer to own the backend systems powering our live games - services currently supporting 1M+ DAU. You’ll be responsible for performance, scalability, and reliability at the core of our infrastructure, working closely with the engineering team on everything from schema design to incident response., + CI/CD and DevOps experience (GitHub Actions, GitLab CI) plus monitoring/alerting (Prometheus, Datadog)

• Strong grasp of networking protocols - WebSockets, gRPC/HTTP2, UDP/TCP tuning for low-latency real-time systems, + Design, build, and maintain Go/Python backend services for live, high-traffic game titles
• Own database schema design and query performance across PostgreSQL systems
• Drive horizontal scaling strategy - optimizing CPU/memory footprint and reducing lock contention over vertical scaling
• Profile and resolve memory leaks, CPU spikes, and deadlocks in production
• Lead root-cause investigations for performance issues and outages, from detection through resolution
• Architect and maintain in-memory caching/state layers (Redis/KeyDB/Memcached)
• Design and run load tests to surface breaking points ahead of release

• Deep Go & Python expertise - language internals, execution models, and performance tuning (goroutine management, GC tuning, zero-allocation techniques)
• Strong PostgreSQL fluency - scalable schema design, query plan analysis, index strategy optimization, with real examples of resolving bottlenecks via data layout or query architecture changes
• Proven experience scaling systems supporting 350k+ DAU, with a horizontal-scaling-first philosophy (efficient serialization/deserialization via Protobuf/MsgPack, reduced lock contention)
• Hands-on profiling experience - identifying and resolving memory leaks, CPU spikes, and deadlocks
• At least 2 concrete examples of complex production performance issues or outages, including root cause analysis and resolution methodology

• At least 2 released production projects as a core backend engineer handling live traffic Important

• Hands-on experience with Redis, KeyDB, or Memcached - caching, rate-limiting, state management, including cache stampede mitigation, serialization overhead, and eviction policy design
• Solid TDD/BDD judgment and practical load-testing experience (e.g., Artillery)
• Practical experience with the Nakama framework - custom Go/Lua modules, matchmakers, storage engine, real-time multiplayer sockets
• Practical GCP/Google App Engine experience - deploying, monitoring, and scaling serverless/container services

• Market competitive, tax-free USD salaries
• Paid Time Off
• Annual Performance Reviews Inscribirse en esta oferta

Mott MacDonald Barcelona, Barcelona Volver a la última búsqueda Trabajos ) Trabajos en ingeniería ) Principal Server Engineer ( volver a la última búsqueda Recibir ofertas similares por correo electrónico No gracias, llévame a la oferta de empleo Al crear una alerta, aceptas nuestros Términos y condiciones y Política de privacidad, y el uso de cookies. Inscribirse en esta oferta

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