Senior GraphQL & Node.js API Engineer

Ethereum Technologies in Sunnyvale, CA, seeks an experienced Software Developer specializing in GraphQL and Node.js to design, develop, and optimize scalable APIs and microservices. You will work on GraphQL schemas, resolvers, and federation, performance tuning with DataLoader, and integrating SQL/NoSQL databases, REST/gRPC APIs, and security controls. Collaboration with frontend teams and CI/CD improvements are core parts of the role.