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Frequently asked questions

What should a senior Golang developer know beyond Go syntax?

A senior Go developer should explain ownership of goroutines, cancellation propagation, bounded concurrency, and error handling across service boundaries. Ask how they use the race detector, benchmarks, and pprof to investigate failures. Practical judgment about interfaces, package structure, and database transactions matters more than writing elaborate abstractions.

Should our Go API use Gin, Echo, or the standard library?

Start with your existing conventions and middleware needs. Go 1.22 added method matching and path wildcards to net/http ServeMux, which can simplify smaller APIs. Gin and Echo provide established routing and middleware patterns. Evaluate validation, observability, error responses, and maintenance costs before introducing or replacing a framework.

How can a Golang developer diagnose high memory use or latency?

Begin with measurements: request traces, allocation profiles, heap profiles, and CPU samples from pprof. Investigate unbounded goroutines, retained buffers, database pool contention, and downstream timeouts. A useful interview exercise asks candidates to distinguish allocation churn from a memory leak and explain how they would validate a proposed fix under representative load.

Can we hire a Go developer to split a monolith into services?

Define a specific service boundary before deciding to extract code. A Go service might own document processing or webhook delivery while the monolith retains core transactions. Ask candidates about protobuf compatibility, idempotency, observability, and deployment rollback. Distributed systems introduce operational costs, so extraction should address a concrete scaling or ownership problem.

What happens if the Golang developer is not the right fit?

If the fit is not right, we bring in a replacement with a proper hand-over. For Go work, useful transition material includes package boundaries, protobuf definitions, migration status, profiling findings, and operational runbooks. Define review expectations early so concerns about concurrency design, testing, or communication become visible before they spread.

Are your developers really based in the US?

Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.

How fast can someone start?

Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.