All roles

Writes and maintains the code behind products. Entry-level hiring in India mostly tests data structures and algorithms first, then how you write and reason about code.

Builds the services, APIs and data storage behind an app. Most of the job is correctness, performance and keeping things running.

Builds what people see and touch in the browser, and makes it fast, accessible and pleasant to use.

Works across the browser, the server and the database. Common in startups, where one person ships a whole feature.

Builds and ships Android apps. India is one of the largest Android markets, so the work is everywhere from startups to banks.

Finds out whether software works before customers do, increasingly by writing code that tests code.

Writes the software inside devices, from sensors to cars. A natural fit for electronics and electrical graduates.

Turns business questions into queries, numbers and charts that someone can act on.

Builds the pipelines and warehouses that get data from where it's created to where it's analysed, reliably and on time.

Trains models and, more often, gets them working reliably in a real product.

Uses statistics, experiments and models to answer questions a business actually has, and explains the answer clearly.

Builds products on top of large language models. Mostly software engineering, plus retrieval, prompting and careful evaluation.

Keeps software building, deploying and running. Automation, infrastructure and being calm when things break.

Designs, builds and runs infrastructure on a public cloud. A large share of IT services hiring.

Keeps business applications running for the people who use them. Incidents, logs, databases and a lot of careful detective work.

Watches for attacks, investigates alerts and responds when something gets through.

The CS paper of GATE, used for M.Tech admissions and some PSU jobs. Engineering maths is left out here.