Data scientist
Also called: ML scientist
Uses statistics and machine learning to predict outcomes and find insights in large data.
What the work is
Data scientists go beyond reports. They build statistical and machine learning models that predict things: which loan may default, how much stock a store needs, which offer a customer will like. They design experiments, test ideas and explain what the model means for the business.
Most data scientists have a strong maths or statistics base and many hold a master's degree. Others start as analysts and grow into the role with experience and projects.
A typical week
- Explore data and test ideas with statistics
- Build and tune machine learning models in Python
- Design A/B tests and measure results
- Present model results and limits to business teams
It suits people who
- Love maths and statistics
- Are curious and rigorous
- Enjoy coding and experiments
Your path to get there
School (Class 8-10)
- Keep Mathematics; take Computer Science if offered
Class 11-12
- B.Tech (CS, AI and DS), B.Sc Statistics, Maths or Data ScienceISI and CMI entrances are strong routes
College or fresher
- Learn Python, statistics, SQL and machine learning (scikit-learn)
- Do a research or Kaggle-style project end to end
- Consider an M.Sc or M.Tech (IIT JAM, GATE DA, ISI, CMI)
Working or switching
- Analysts move up by adding statistics and machine learning
- Engineers and researchers with maths backgrounds move in through projects and a specialised course
- Start with a skills refresh of 6 to 12 weeks: one short course and one TalentMeter assessment to show where you stand today.
- Use returnship and second-career programmes; many large employers in India run them for people back after a break.
- Explain the gap in one honest line on your CV and LinkedIn, and list what you did in it (caregiving, freelancing, courses, volunteering).
- Contract, part-time and freelance roles are a common way back in; they turn into full-time offers often.
Exams and certifications
| Name | What it is for | When |
|---|---|---|
| GATE (Data Science and AI) | M.Tech and some PSU jobs | Final year or after |
| IIT JAM ↗ | M.Sc in Statistics or Maths | Final year of graduation |
| ISI and CMI entrance tests ↗ | M.Stat and data science master's | After graduation |
Exam names, eligibility and dates change. Always check the official website for this year's notice.
Job market
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