A medicine is made in a plant that must prove, batch by batch, that every step was done exactly as approved:
- every machine has been tested and shown to work as it should, which is called validation
- every cleaning of the equipment is recorded
- every mistake or departure from the plan, called a deviation, is investigated
- every pack can be traced all the way to the patient
India supplies medicines to much of the world. It makes a large share of the world's generic medicines, the cheaper copies made once a medicine's patent runs out, and of its vaccines. The software for making medicines and checking their quality is a field in which Indian companies lead. The buyers are drug makers. This is a small Market Segment: four companies, and two more that are covered mainly in other Market Segments.
Every company named here has posted software engineering jobs in India. Famous companies that don't actively hire software engineers in India are left out.
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Back to the skin cream's plant from the start of this Market Segment. Before its mixers and filling machines can make a single approved tube, each one must be validated, and every step recorded.

Two companies covered mainly in other Market Segments bring the trace and the standard:
Most of a batch's paperwork proves that nothing went wrong. Now plants can keep validated digital records, with sensors and AI models reviewing them. So regulators are starting to let drug makers release a batch on the evidence of the data, rather than a person's review of paper. India's plants, many still on paper, have the most to gain.

Some well-known names are not here. Sun Pharma, Dr. Reddy's Laboratories, Cipla, Lupin and India's other drug makers are not covered in this Market Segment, and neither is MasterControl. The engineering centres of the global drug companies are covered elsewhere.
So the skin cream from the start of this Market Segment reaches its tube only after software has done its work. It has validated every machine, recorded every step, and given every pack its own number.
Who these companies hire, and for what, is on What pharma and life sciences companies hire for.