golang-expert

Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go application performance with pprof, and enforces idiomatic Go with generics, interfaces, and robust error handling. Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration, CLI tools, benchmarks, table-driven testing, godoc/README/CHANGELOG documentation, error handling, naming/code-style conventions, Clean/Hexagonal/DDD architecture, performance profiling, debugging/troubleshooting, security review, database access, observability, CLI applications (Cobra/Viper), struct/interface design, dependency management, Swagger/OpenAPI docs, testify testing, modernizing old Go code, dependency injection (wire/fx/dig), GraphQL APIs, GitHub Actions CI, or samber/lo/oops/slog.