Career guide

Backend Engineer

Backend engineers build the APIs, data models and integrations everything else stands on. The craft is correctness under concurrency, schema design you will not regret in a year, and interfaces that are hard to misuse — performance matters, but predictability matters more.

3042L across 1 live listing6 core skillsInterview questions →

What the work actually is

  • Designing and building APIs (REST/GraphQL/gRPC)
  • Data modelling and migrations on SQL/NoSQL stores
  • Queues, caches and third-party integrations
  • Code review, testing and production debugging

The skills that get you hired

Core — expected at interview

One server language deeply (Node/Go/Java/PHP/Python)SQL + schema designAPI designCaching (Redis)QueuesTesting

Differentiators

Event-driven architectureObservabilityDocker/K8sSecurity (OWASP)

The path

  1. Backend Engineer0–3 yrsOwn endpoints and models; learn to read a query plan.
  2. Senior Backend Engineer3–6 yrsOwn services and their contracts; design for the next team, not just the next sprint.
  3. Staff Engineer6+ yrsOwn cross-service architecture and the standards that keep it coherent.

Live Backend Engineer jobs on ApplyJob