Go (or Golang) is a compiled programming language designed at Google by Robert Griesemer, Rob Pike and Ken Thompson, made public in 2009, and built to write fast, reliable server software simply.
Its philosophy: few keywords, a deliberately minimalist syntax, very fast compilation that produces a single binary that is easy to deploy. Its main strength is concurrency: goroutines and channels make it possible to handle thousands of parallel tasks without the usual complexity.
Go has become the language of cloud infrastructure. Docker, Kubernetes, Terraform and Prometheus are written in Go. It is also found in high-traffic back-ends, microservices, APIs and command-line tools.
Its simplicity is a deliberate choice: Go favors code the whole team can read over expressiveness.
Why it matters when hiring
The Go talent pool is smaller than Java's or Python's, but many back-end developers pick it up quickly thanks to its simplicity. A good candidate coming from Java or C can be productive within a few weeks: requiring several years of Go shuts out strong profiles. In the interview, mastery of concurrency (goroutines, channels, error handling) is the real test.