Backend Developer Job Description, KRAs and Skills

A Backend Developer builds the server side of web and mobile applications: the APIs, business logic and database work that power the user facing app. At the entry level they build endpoints, write queries and fix bugs under the guidance of senior engineers. A good junior backend developer writes correct, secure code, handles errors well and understands how data flows through the system. The role sits in an engineering team and reports to a technical lead or senior software engineer, delivering assigned features and learning the stack.

Detail	For this role
Department	Information Technology
Level	Entry level
Reports to	Technical Lead
Direct reports	None
Experience	Fresher or up to 2 years in backend development

Backend Developer job description template

Copy this job description, replace the text in square brackets and post it on your careers page or a job portal.

Job title: Backend Developer

Department: Information Technology

Reports to: Technical Lead

Location: [City], [office, branch or site]

About the role

Key responsibilities

Build and change API endpoints and business logic from clear tasks and acceptance criteria.
Write and optimise database queries and design simple schema changes with guidance.
Validate input, handle errors and return clear responses so clients behave correctly.
Write unit and integration tests for the code you deliver.
Fix reported bugs and confirm the fix does not break other endpoints.
Follow security basics such as authentication checks and safe handling of secrets.
Raise clean pull requests and act on review feedback quickly.
Debug issues across the application code, the database and server logs.
Document endpoints and changes so the team and front end can use them.
Learn the framework, database and architecture with support from seniors.

Requirements

Graduate in computer science, IT or engineering (B.E., B.Tech, BCA or MCA)
Working knowledge of a backend language such as Java, Python, Node.js or C#
Understanding of databases and APIs
Fresher or up to 2 years in backend development

KRAs and KPIs for a Backend Developer

Key result areas for the appraisal form, each with a KPI you can measure every month or quarter.

Key result area	How to measure it
Delivery	Assigned endpoints and tasks delivered within sprint estimates
Code quality	Pull requests pass review with limited rework
Defect rate	Bugs from own code kept low, with critical defects near zero
API correctness	Endpoints return correct data and error responses as specified
Testing	Unit and integration tests written as per the team standard
Learning	New backend skills and domain knowledge picked up each quarter

Skills and tools

Server side programmingREST API designSQL and databasesAuthentication basicsUnit and integration testingGitDebuggingWillingness to learnTeamwork

Tools used day to day: A backend framework, SQL database, Postman, Git, IDE, Docker basics.

Reporting line and career path

Moves up from: Software Trainee, Associate Software Engineer, Intern
Next roles: Software Engineer, Senior Backend Developer, Full Stack Developer

Interview questions for a Backend Developer

What makes a good REST API endpoint?
How do you prevent SQL injection in your queries?
What is the difference between authentication and authorization?
An endpoint is slow. How do you find and fix the cause?
How do you handle errors so the client gets a clear response?
Tell me about a backend feature you built and how you tested it.

Managing a Backend Developer in ZeniaHR

AttendanceOffice or hybrid on a general or flexible shift with core hours, since backend work needs focus time. Web punch on the approved office network covers office days, and mobile app punch with a location check covers work from home days set in the work terms policy.LeaveA junior backend developer is often on probation, so track the probation end through the probation queue. Reporting manager then HR approve leave, and the leave apply preview shows whether leave is allowed during probation and the balance after.Performance and KRAsSet the KRAs above as goals in a review cycle and use the probation review rated 1 to 5 by the manager to confirm the developer. After confirmation hold the formal review each quarter and check delivery and defect rate monthly.

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Frequently asked questions

What does a backend developer do?

A backend developer builds the server side of applications: the APIs, business logic and database work behind the user facing app. They build endpoints, write queries, validate input and handle errors. At the entry level they deliver assigned features, write tests and learn the stack with support from senior engineers, so clients get correct and secure data.

What is the difference between a backend and a frontend developer?

A backend developer works on the server: APIs, logic, databases and security. A frontend developer works on what the user sees: the interface, forms and interactions in the browser or app. They meet at the API, where the frontend calls the backend for data. A full stack developer does both.

Which language should a backend developer learn in India?

Java, Python, Node.js and C# all have strong demand in India, and PHP still runs many web applications. Pick one and learn it well along with SQL, API design and security basics. The language matters less than understanding how servers, databases and APIs work, since those concepts carry across every stack.