A ready CV example for the Backend Developer role. Everything in square brackets is a placeholder: replace it with your own facts, otherwise an ATS reads it as written.
Backend developer with [N] years of experience in [Go/Java/Python/Node.js]. I design APIs and services and care about reliability, observability and running costs.
REST API, microservices, PostgreSQL, message queues, system design, caching, unit/integration tests, AWS
Usually 1 page up to ~10 years of experience; 2 pages if you have more and every bullet shows a result.
Job posts for this role most often contain: REST API, microservices, PostgreSQL, message queues, system design, caching, unit/integration tests, AWS. Use them only where they are true for you, spelled as in the job post.
Describing duties instead of results: “responsible for API development”. Every CV says that — say what became better.