Backend API Developer (.NET / PostgreSQL / Redis) – Mobile Game Backend – Contract to Hire

We are looking for a skilled Backend API Developer to build and maintain the backend services powering a large-scale, persistent-world mobile game. You will focus exclusively on the backend API layer, designing secure, scalable services that support authentication, player data, economy, server coordination, and world persistence. Responsibilities • Design, implement, and maintain RESTful APIs using.NET (ASP.NET Core). • Develop backend systems for authentication, player profiles, inventory, jobs, economy, and persistent world state. • Work with PostgreSQL to design optimized schemas, queries, and migrations. • Implement caching layers and high-performance data flows using Redis. • Integrate APIs with game server instances, dashboards, and admin tools. • Ensure API security (JWT, rate-limiting, encryption, permissions). • Build monitoring, logging, and error-handling systems. • Deploy, manage, and scale services on AWS (ECS/Lambda, RDS, ElastiCache, CloudWatch, etc.). • Collaborate with Unity client developers and the multiplayer/networking team. Requirements • Strong experience with C# and ASP.NET Core. • Solid knowledge of PostgreSQL, relational design, and performance tuning. • Hands-on experience with Redis (caching, distributed locks, queues). • Practical experience deploying and scaling systems on AWS. • Understanding of distributed systems, REST with high concurrency, and API security. • Familiarity with CI/CD pipelines and containerized deployments (Docker). Nice to Have • Experience in gaming backends or online services. • Knowledge of event-driven systems (Kafka/SQS). • Experience with metrics, load testing, and optimization. Apply tot his job Apply tot his job