gRPC

gRPC is a high-performance, open-source RPC framework originally developed by Google that uses Protocol Buffers for serialization and HTTP/2 for transport, offering features like bidirectional streaming and built-in authentication. Job listings requiring gRPC typically come from companies building microservices architectures, real-time systems, or performance-critical internal APIs where efficiency and type safety matter more than broad client compatibility. Backend engineers are expected to define service contracts using Protocol Buffer schemas, implement server and client code in multiple languages, and leverage features like deadlines, retries, and load balancing through client libraries. The framework's support for streaming RPCs makes it particularly valuable for real-time data feeds, chat systems, or telemetry collection where traditional request-response patterns prove inefficient. Roles often involve designing API versioning strategies, implementing middleware for logging and authentication, and debugging issues related to connection management and flow control. Companies choosing gRPC over REST typically prioritize internal service communication efficiency, have polyglot environments requiring strong contracts, or need features like streaming and multiplexing that HTTP/1.1-based protocols handle poorly.