Back-end engineering involves creation and maintenance of server-side ,logic,database that powers a web or web-application.

who is a Back-end-engineer? Is a software-developer who focuses on building and maintaining the server-side of the application.

Responsibilities of a Back-end Engineer.

• Authentication and security :implementing secure login systems,data encryption and access control.

• Database Management:Designing,creating and maintaining databases e.g MongoDB,PostgreSQL,MySQL.

• Server-side logic:writing code that process request,applies proper responses and applies business rules.

• API Development:Creating and Managing Restful or GraphQL apis that allow communication between front-end and Back-end.

• Performance Optimization:Ensuring the application runs efficiently under various loads.

Common Technologies used by a Back-end-engineer

• Languages :Python,PHP,GO,Java,C#,RUBY,Javascript.

• Frames-works:Django/flask,La-ravel/cog-niter,spring-boot(java) ruby on rails(Ruby) Node-js(Java-script).

• Databases: MySQL, PostgreSQL, MongoDB, Redis.

• *Tools/Platforms *: Docker, Kubernetes, AWS, Azure, CI/CD tools like Jenkins or GitHub Actions.

Example Scenario:
When you submit a form on a website (like signing up for an account), the back-end engineer’s code:

Receives the form data.

Validates and processes it.

Stores it in the database.

Sends a response back to the front-end (like a success message or error).

In short, back-end engineers make the digital "plumbing" work—handling the logic, data, and systems that power applications.