Software Engineer career guide
Design, build, test and ship software that people rely on.
What does a software engineer do?
A software engineer designs, writes, tests and maintains software, from web and mobile apps to back-end services and internal tools. It is one of the most common entry points into IT careers in India, from service companies to product startups.
Hiring usually tests problem-solving with data structures and algorithms, plus practical knowledge of the language and stack you will use.
Typical responsibilities
- Write clean, tested, maintainable code
- Design features and components with the team
- Review code and give constructive feedback
- Debug and fix production issues
- Write and maintain technical documentation
- Work in agile teams with product and QA
Skills you need
Technical skills
- One programming language in depth (Java, Python, JavaScript or C++)
- Data structures and algorithms
- Object-oriented design
- Databases and SQL
- Git and version control
- REST APIs and web fundamentals
- Testing practices
Soft skills
- Breaking down problems
- Reading and learning from others' code
- Clear technical communication
- Ownership of quality
Tools and technologies
- Git and GitHub or GitLab
- VS Code or IntelliJ
- A main language and framework (for example Java with Spring, or JavaScript with React and Node.js)
- SQL databases
- Docker
- CI/CD pipelines
- Jira
Certifications
- AWS Certified Developer – AssociateIntermediateAWS
- Oracle Certified Professional: Java SE DeveloperIntermediateOracle
Certifications are optional for most roles; skills and projects matter more. Providers retire and rename exams regularly, so check the provider's website before you register. Last reviewed October 2026.
Software Engineer salary
Career path
- Step 1Associate Software Engineer
- Step 2Software Engineer
- Step 3Senior Software Engineer
- Step 4Staff Engineer or Tech Lead
- Step 5Principal Engineer or Engineering Manager
Titles and the time between steps vary by company and individual.
Your first 90 days of learning
Language and fundamentals
- Get fluent in one language: syntax, collections, error handling
- Solve easy problems on arrays, strings and hash maps daily
- Learn Git basics: branches, commits and pull requests
Data structures and building
- Practise linked lists, trees, recursion and sorting
- Build a small CRUD application with a database
- Learn REST API basics and write unit tests
Projects and interview readiness
- Ship one project you can demo, with a README
- Practise medium-level problems under time limits
- Prepare to explain your project's design decisions
Interview preparation
Common topics to prepare for software engineer interviews. These are preparation areas, not questions from a specific company's interview.
- Arrays, strings and hash maps
- Linked lists, trees and graphs
- Time and space complexity
- Object-oriented design principles
- SQL queries and database basics
- Explaining a project you built
Resume guidance
- Lead with projects and what you built, not course lists
- Name the stack for each project
- Link GitHub and a deployed demo if possible
- Mention problem-solving practice only if you can discuss it
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