Career path
Backend Developer
A backend developer builds the parts of a system users never see — the servers, databases, and APIs that store data and enforce the rules behind every screen. If the frontend is the shop floor, the backend is the warehouse and the till.
What the job actually is
You design and run the logic and data that power an application. That means modelling data, writing APIs other code calls, querying databases efficiently, and thinking hard about reliability, security, and what happens when traffic spikes. Much of the skill is invisible: getting the data model right early saves months of pain later.
Skills that matter
- A backend language — such as Python, Go, Java, or Node.js — known well.
- Databases and SQL — how to model data and query it without melting the server.
- API design — clear, consistent interfaces other systems depend on.
- Fundamentals of security and authentication.
- Debugging in production — calmly tracing why a request failed.
How to switch in
Backend is a natural step for frontend developers who want to go deeper, and for data engineers or analysts already comfortable with databases. The move is to build a couple of real services end to end — an API with a database behind it — and learn to reason about reliability and scale, not just whether the code runs once.