Interview preparation roadmap · Science
Research methods, lab or data skills in your field, and presenting your past work clearly.
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- 01Interview foundations
- 02Research core
- 03Field knowledge
- 04Practice
- 05Behavioral & HR
- 06Company & final prep
01Interview foundations
What every interviewer sees first.
01.1Resume
A one-page resume you can defend line by line.
What this covers
- One-page format — Reverse-chronological, clean fonts, no photos or tables that confuse parsers.
- Project bullets — Action + what you built + a number (users, speed, accuracy).
- Skills section — Only skills you can answer questions on for two minutes.
- ATS readability — Export a text-based PDF and check it with a parser.
- Working links — GitHub, LinkedIn and a live project link that open.
- Tailoring — Reorder bullets to match the job description.
What to practise
- Run your PDF through a parser test
- Rewrite each bullet as action + result
- Remove any skill you can't explain for 2 minutes
Common questions
- Walk me through your resume.
- Which project here are you most proud of, and why?
- Why is this skill on your resume?
Free resources
- OpenResume — Free ATS-friendly resume builder and parser test (Free)
- Jake's Resume (Overleaf) — The LaTeX resume template most SDE freshers use (Free)
- Resume Worded — Resume and LinkedIn scoring (Free plan)
- Jobscan — Match your resume against a job description (Free plan)
Free courses
- Professional Resume Writing — Alison (Free course)
- Resume, Networking, and Interview Skills — Fullbridge (Free to audit)
01.2Tell me about yourself
A 60–90 second answer: present, past, why this role.
What this covers
- Present — Who you are now: degree, year, focus.
- Past — One or two proof points: a project, internship or result.
- Future — Why this role and this company next.
- Length — 60–90 seconds; stop before you list everything.
- Delivery — Calm pace and eye contact, not a memorised script.
What to practise
- Write it, then say it out loud 5 times
- Record yourself and cut anything over 90 seconds
Common questions
- Tell me about yourself.
- Why should we hire you?
- Where do you see yourself in a few years?
Free resources
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
- BBC Learning English — Structured free English lessons and podcasts (Free)
Free courses
- English@Work: Basic Job Interview Skills — The Hong Kong Polytechnic University (Free to audit)
- Job Interview Preparation For Tech Professionals — University of Cape Town (Free to audit)
01.3Papers & your research talk
Reading papers and presenting your own work clearly.
What this covers
- Reading papers — Abstract, figures, methods, then details.
- Your thesis story — Question, method, result, meaning.
- Talk structure — Fifteen minutes, one main message.
- Handling questions — Honest limits.
- Literature awareness — Key recent work in your area.
What to practise
- Give a 15-minute talk on your work
- Summarise three recent papers in your field
Common questions
- Explain your research to a non-specialist.
- What are the limitations of your study?
Free resources
- Google Scholar — Papers, plus the Cite button for APA/IEEE (Free)
- PubMed — Search biomedical and life-science papers (Free)
- Zotero — Reference manager with one-click citations (Free)
Free courses
- Science Writing and New Media: Explorations in Communicating about Science & Technology — MIT OpenCourseWare (Free course)
- Advanced Workshop in Writing for Science and Engineering (ELS) — MIT OpenCourseWare (Free course)
- Science Writing and New Media: Science Writing for the Public — MIT OpenCourseWare (Free course)
02Research core
The main rounds.
02.1Research methods
Designing studies and analysing results carefully.
What this covers
- Research questions — Clear and testable.
- Study design — Controls, variables, sample size.
- Data analysis — Statistics you actually used.
- Reproducibility — Notes, code and data.
- Ethics — Consent and integrity.
What to practise
- Write a one-page research proposal
- Explain the statistics in one of your projects
Common questions
- How did you design your experiment?
- How do you know your result is not chance?
Free resources
- Khan Academy: Statistics and probability — Free statistics course with practice (Free)
- Google Scholar — Papers, plus the Cite button for APA/IEEE (Free)
- Zotero — Reference manager with one-click citations (Free)
Free courses
- Introduction to Research (Research Methodology) — IIT Madras (Free course)
- Research Methodology in Natural Sciences — IISER Kolkata (Free course)
- Research Methodology in Humanities and Social Sciences — IIT Roorkee (Free course)
02.2Lab techniques & safety
Instruments, SOPs and documentation in the lab.
What this covers
- Lab safety — Chemicals, biosafety, waste.
- Instruments — Principles of what you used.
- SOPs & GLP — Following and writing procedures.
- Documentation — Lab notebooks and records.
- Troubleshooting — When experiments fail.
What to practise
- Explain three instruments you used, with principles
- Write an SOP for one routine task
Common questions
- How does a spectrophotometer work?
- An experiment failed. What do you do?
Free resources
- NPTEL — IIT/IISc course videos across engineering (Free)
- Khan Academy — Maths and science from scratch (Free)
- PubMed — Search biomedical and life-science papers (Free)
Free courses
- MIT 5.301 Chemistry Laboratory Techniques — Massachusetts Institute of Technology (Free video)
- Chemistry Laboratory Techniques — MIT OpenCourseWare (Free course)
- Biochemistry Laboratory — MIT OpenCourseWare (Free course)
02.3Data analysis for science
Python or R for analysing experimental data.
What this covers
- Python or R basics — Scripts and notebooks.
- Data handling — Tables, cleaning, plotting.
- Statistics in code — t-tests, regression.
- Reproducibility — Versioned code and data.
- Figures — Clear plots for papers.
What to practise
- Re-analyse one of your datasets in code
- Make one publication-quality figure
Common questions
- How did you analyse your data?
Free resources
- Kaggle Learn — Short practical courses: Python, Pandas, ML, SQL (Free)
- Khan Academy: Statistics and probability — Free statistics course with practice (Free)
- Google Colab — Free notebooks with a GPU (Free plan)
Free courses
- Data Analysis with Python — IBM (Free course)
- Python for Data Science, AI & Development — IBM (Free course)
- Data Analysis with Python Course — freeCodeCamp (Free video)
03Field knowledge
Your area in depth.
03.1Statistics & probability
The statistics data interviews commonly test, explained in plain words.
What this covers
- Descriptive statistics — Mean, median, variance, percentiles.
- Probability — Conditional probability and Bayes' rule.
- Distributions — Normal, binomial, Poisson and when they apply.
- Sampling & CLT — Why sample means behave predictably.
- Hypothesis testing — p-values, confidence intervals, errors.
- Correlation vs causation — Confounders and how to argue carefully.
What to practise
- Explain a p-value to a non-technical friend
- Solve 20 probability questions
Common questions
- What is a p-value?
- Difference between correlation and causation?
- When would you use the median instead of the mean?
Free resources
- Khan Academy: Statistics and probability — Free statistics course with practice (Free)
- StatQuest — Statistics and ML explained clearly, in videos (Free)
- Khan Academy — Maths and science from scratch (Free)
Free courses
- Descriptive statistics | Probability and Statistics | Khan Academy — Khan Academy (Free video)
- Inferential statistics | Probability and Statistics | Khan Academy — Khan Academy (Free video)
- Random variables and probability distributions | Probability and Statistics | Khan Academy — Khan Academy (Free video)
03.2Your subject in depth
Strong command of the subject you will teach or design for.
What this covers
- Syllabus coverage — Know the board or course syllabus.
- Common misconceptions — Where students usually go wrong.
- Real-life examples — Connecting topics to life.
- Problem solving — Solving questions quickly and clearly.
- Recent updates — Changes in curriculum or exams.
What to practise
- List ten common misconceptions in your subject
- Solve a past exam paper in time
Common questions
- What is a common misconception in your subject?
- How would you make this topic interesting?
Free resources
- Khan Academy — Maths and science from scratch (Free)
- DIKSHA — National platform for teachers and school content (Free)
- NPTEL — IIT/IISc course videos across engineering (Free)
04Practice
Rehearse it out loud.
04.1Mock interviews
At least two full practice interviews before the real one.
What this covers
- Realistic setting — Same format, time limit and dress as the real round.
- Common questions first — Introduction, motivation, experience, weaknesses.
- Feedback — Ask what was unclear or too long.
- Recording — Watch yourself once; fix fillers and pace.
- Role questions — Add 3–5 questions specific to your field.
What to practise
- Do two mock interviews with a friend or senior
- Use a spoken practice tool and read the transcript
Common questions
- Tell me about yourself.
- Why this role?
Free resources
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
- Pramp / Exponent peer mocks — Free peer-to-peer mock interviews (Free plan)
- Tech Interview Handbook — Free guide to coding and behavioral interviews (Free)
Free courses
- Software Engineering Job Interview – Full Mock Interview — freeCodeCamp (Free video)
05Behavioral & HR
How you work with people.
05.1Behavioral & STAR
Stories about teamwork, conflict and failure, told with STAR.
What this covers
- STAR structure — Situation, task, action, result. Spend most of the time on action.
- Story bank — 6–8 real stories you can reuse across questions.
- Teamwork & conflict — Disagreeing respectfully and what you changed.
- Failure & weakness — A real one, what you learned, what you do now.
- Ownership — Times you took initiative without being asked.
- Common HR questions — Why us, why you, strengths, relocation.
What to practise
- Write 6 stories in STAR form
- Map each story to 2–3 common questions
- Practise one story with a friend
Common questions
- Tell me about a time you failed.
- Describe a conflict in a team and what you did.
- What is your biggest weakness?
Free resources
- Tech Interview Handbook — Free guide to coding and behavioral interviews (Free)
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
- Pramp / Exponent peer mocks — Free peer-to-peer mock interviews (Free plan)
Free courses
- Master Behavioral Interviews (for Software Engineers) — freeCodeCamp (Free video)
- Behavioral Interview Practice for Computer Science Students — CodeSignal (Free to audit)
- Soft Skills For Tech Professionals — University of Cape Town (Free to audit)
05.2Strengths & weaknesses
Honest strengths with proof, and a real weakness you are working on.
What this covers
- Strengths with proof — Pick 2–3 and back each with one short example.
- A real weakness — Not a disguised strength; something you are actively improving.
- What you are doing about it — The habit, course or system that shows progress.
- Fit to the role — Strengths that matter for this job, not any job.
What to practise
- Write three strengths with one example each
- Practise the weakness answer until it sounds calm, not rehearsed
Common questions
- What are your greatest strengths?
- What is your biggest weakness?
- How would your friends or teammates describe you?
Free resources
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
- Indeed career guide: interviewing — Articles on common interview questions and answers (Free)
- Tech Interview Handbook — Free guide to coding and behavioral interviews (Free)
Free courses
- Software Engineering Job Interview – Full Mock Interview — freeCodeCamp (Free video)
- A Complete Job Interview Skills Guide — Alison (Free course)
- English@Work: Advanced Job Interview Skills — The Hong Kong Polytechnic University (Free to audit)
05.3Common HR questions
The questions almost every HR round asks, answered honestly and briefly.
What this covers
- Why this company — Specific reasons from your research, not praise.
- Why should we hire you — Match two needs of the role to your proof.
- Gaps and changes — Explain gaps, backlogs or a branch change without excuses.
- Relocation, shifts, bonds — Know your real answer before the interview.
- Career goals — A realistic next step, connected to this role.
- Notice period and joining — Facts you should have ready.
What to practise
- Write short answers to ten common HR questions
- Say them aloud to a friend and cut anything over a minute
Common questions
- Why do you want to join us?
- Where do you see yourself in five years?
- Are you open to relocation?
- Why did you choose your branch or degree?
Free resources
- Indeed career guide: interviewing — Articles on common interview questions and answers (Free)
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
- AmbitionBox interviews — Interview experiences and company reviews from Indian candidates (Free)
Free courses
- Software Engineering Job Interview – Full Mock Interview — freeCodeCamp (Free video)
- A Complete Job Interview Skills Guide — Alison (Free course)
- Interview Preparation Skills for Accountants — Alison (Free course)
06Company & final prep
The last 48 hours.
06.1Company research
The product, the role, the job description and recent news.
What this covers
- The business — What it sells and to whom.
- The role — What the job description really asks for.
- Recent news — Launches, results, announcements.
- Interview format — The rounds, if the company shares them.
- Your fit — Three reasons, matched to the job description.
What to practise
- Write 3 reasons you want this role
- Match 3 JD lines to your experience
Common questions
- Why do you want to work here?
- What do you know about our product?
Free resources
- GeeksforGeeks — Company-wise questions and theory (Free plan)
- Tech Interview Handbook — Free guide to coding and behavioral interviews (Free)
06.2Questions to ask
Two or three good questions for the end of the interview.
What this covers
- About the team — How work is planned and reviewed.
- About growth — Mentoring, learning, the first 90 days.
- About the product — What is hard right now.
- What to avoid — Questions a quick search answers.
What to practise
- Write 5 questions, keep the best 3
- Prepare one question about the team's own product
Common questions
- Do you have any questions for us?
Free resources
- Tech Interview Handbook — Free guide to coding and behavioral interviews (Free)
06.3Salary & offer basics
How to read an offer, answer salary questions and compare offers.
What this covers
- CTC vs in-hand — CTC includes PF, bonuses and benefits; in-hand is what you receive monthly.
- Fixed vs variable — Variable pay and joining bonuses may have conditions.
- Bonds and clawbacks — Read the service agreement before you sign.
- Answering "expected salary" — Give a researched range or ask for theirs first.
- Comparing offers — Role, learning, location and in-hand pay, not only CTC.
What to practise
- Look up salary ranges for the role and city
- Calculate in-hand pay for one sample offer
Common questions
- What are your salary expectations?
- Do you have any other offers?
Free resources
- Levels.fyi — Salary data shared by employees, mostly tech roles (Free)
- AmbitionBox interviews — Interview experiences and company reviews from Indian candidates (Free)
- Glassdoor interview questions — Interview questions and reviews shared by candidates (Free plan)
06.4Final checklist
Logistics, documents, setup and a calm night before.
What this covers
- Logistics — Time, timezone, link or address.
- Documents — Resume copies, ID, certificates if asked.
- Tech check — Camera, mic, internet, charger.
- Night before — Sleep, light revision, no new topics.
What to practise
- Do a 5-minute tech check the day before
- Lay out documents and clothes the night before
Free resources
- Google Interview Warmup — Free spoken mock interview that prints your transcript (Free)
06.5Job & interview safety
Spot fake offers, payment requests and fake interview links.
What this covers
- Payment requests — Real employers don't charge for jobs or training.
- Email domains — Check it matches the company's own site.
- OTPs & logins — Never share them with anyone.
- Fake interview links — Care with unknown chat apps and downloads.
- Reporting — The 1930 helpline and cybercrime.gov.in.
What to practise
- Check one recent offer against these rules
- Confirm the opening is listed on the company's own careers page
Free resources
- National Cyber Crime Portal — Report online fraud and job scams (Free)
- Have I Been Pwned — Check if your email appears in a data breach (Free)