Interview prep resources, sorted by the job you want
190 interview prep resources for 12 tech roles, sorted by interview round. Most are free, and we checked the links on 15 October 2026.
190 resources · 162 free · Links checked 15 October 2026 · How we pick
Pick your role
Software engineering
SDE, backend, frontend, full stack, mobile, DevOps and SRE, QA and SDET
Software engineer
54 resources · 42 free
Start with Striver's A2Z DSA Sheet (takeUforward)
Backend developer
45 resources · 35 free
Start with The System Design Primer
Frontend developer
37 resources · 29 free
Start with Front End Interview Handbook
Full stack developer
43 resources · 34 free
Start with Grind 75
Mobile developer
19 resources · 15 free
Start with Android Interview Questions (Amit Shekhar)
DevOps and SRE
24 resources · 21 free
Start with DevOps Exercises
QA and SDET
12 resources · 9 free
Start with GeeksforGeeks: Software Testing Interview Questions
Data
Data engineer, data analyst and data scientist: SQL, statistics and pipelines
Data engineer
23 resources · 18 free
Start with Data Engineer Handbook
Data analyst
21 resources · 17 free
Start with LeetCode SQL 50 study plan
Data scientist
24 resources · 17 free
Start with Introduction to Machine Learning Interviews (Chip Huyen)
AI and ML
ML engineer and AI engineer: ML theory, ML system design, LLMs and agents
ML engineer
31 resources · 23 free
Start with AIMLInterviews (formerly Machine-Learning-Interviews)
AI engineer
27 resources · 20 free
Start with Awesome Generative AI Guide: AI Interview Hub
By round
| Round | What it tests | Covered most on |
|---|---|---|
| Coding and DSA | Solving problems with data structures and algorithms, and explaining your approach | Software engineer (32) |
| Core CS | Operating systems, DBMS, computer networks and OOP basics | Software engineer (5) |
| LLD and machine coding | Class design, design patterns, and building a small working app in about 90 minutes | Software engineer (8) |
| System design | Designing a large service: APIs, data, scaling and the trade-offs between options | Backend developer (23) |
| Frontend and UI coding | Building UI components in JavaScript, plus browser, DOM and performance questions | Frontend developer (19) |
| Language and tool questions | Questions on your stack: languages, frameworks, cloud, testing and data tools | DevOps and SRE (12) |
| SQL | Writing queries with joins, grouping and window functions on realistic tables | Data analyst (13) |
| ML theory and statistics | Statistics, probability, A/B tests, ML algorithms and how to judge a model | ML engineer (15) |
| ML system design | Designing ML systems end to end: data, training, serving and monitoring | ML engineer (6) |
| LLMs and GenAI | How LLMs work, plus RAG, agents, evaluation and building on model APIs | AI engineer (16) |
| Behavioral and HR | Stories about your past work, teamwork and conflict, and why you want the job | Same for every role (9) |
| Resume, companies and offers | Getting shortlisted, researching companies, and comparing and negotiating offers | Software engineer (1) |
| Practice and communities | Timed problems, live practice with peers, and interview stories from other candidates | QA and SDET (3) |
For every role
Behavioral and HR rounds, resumes, pay and company guides apply whatever the job.
Behavioral and HR 9 resources
GeeksforGeeks - HR interview questions
Website · geeksforgeeks.org
Twenty-five standard HR-round questions, from 'tell me about yourself' to relocation and 'why should we hire you', each with a fill-in sample answer.
Best for Indian freshers preparing for the HR round of campus or off-campus hiring
Microsoft Careers - Interview tips
Official guide · careers.microsoft.com
Microsoft's before, during and after checklist for interviews, which recommends a STAR-plus-Reflection answer format and explains traits like growth mindset.
Best for behavioral answers for Microsoft interviews, including roles at its Hyderabad and Bengaluru centres
MIT CAPD - The STAR method for behavioral interviews
Website · capd.mit.edu
A short, neutral STAR primer from MIT's career office, with a worksheet for choosing examples and keeping the answer on what you personally did.
Best for freshers learning the STAR method for the first time
Tech Interview Handbook - Behavioral interviews
Website · techinterviewhandbook.org
A free behavioral-round guide for engineers on what interviewers judge, how to shape answers with STAR, and how to prepare a few reusable project stories.
Best for a first structured pass at behavioral prep alongside coding prep
reverse-interview
GitHub repo · viraptor/reverse-interview
A community-built bank of questions to ask your interviewers about the role, team, engineering practices, company health and pay.
Best for the 'any questions for us?' moment, and judging whether to accept an offer
Amazon Leadership Principles
Official guide · amazon.jobs
Amazon's list of its 16 Leadership Principles, the yardstick its interviewers use for every behavioral question in an Amazon or AWS loop.
Best for mapping your STAR stories to each principle before any Amazon or AWS interview
Google Careers - Interview tips
Official guide · google.com
Google's own candidate advice on matching your resume to the listing, building a bank of STAR examples, talking about leadership and handling follow-up questions.
Best for anyone with a Google interview who wants the official view before third-party guides
Jeff H Sipe - Practice Interviews (YouTube)
YouTube channel · youtube.com
A former Google technical recruiter takes behavioral questions apart: how to build the story, which follow-ups to expect, and how to talk about pay.
Best for hearing what a strong behavioral answer and its follow-ups actually sound like
A Life Engineered (Steve Huynh, YouTube)
YouTube channel · youtube.com
A former Amazon principal engineer who sat on many interview loops gives frank advice on interviewing, leveling, offers and building a tech career.
Best for mid-level and senior engineers thinking about level, scope and how seniority is judged
Practice and communities 3 resources
r/cscareerquestions
Community · reddit.com
One of the largest global forums on software careers, with job-search strategy, offer decisions, interview stories and daily discussion threads.
Best for a global view of hiring trends, offers and interview formats
r/developersIndia
Community · reddit.com
India's biggest developer subreddit, full of interview stories, offer comparisons, job-switch advice and resume-review threads, with a companion wiki and Discord.
Best for India-specific questions like CTC versus in-hand pay, notice periods and service-to-product switches
Blind
Community · teamblind.com
An anonymous forum where employees verified by work email compare offers, levels and recent interview loops company by company, with busy India channels.
Best for checking whether an offer is competitive and what a company's current loop looks like
Resume, companies and offers 11 resources
Tech Interview Handbook - Software engineer resume guide
Website · techinterviewhandbook.org
A step-by-step guide to a tech resume that survives applicant-tracking filters, from a parseable template and section order to impact-focused bullets and free checks.
Best for writing or fixing a resume before applying to product companies
Reactive Resume
GitHub repo · reactive-resume/reactive-resume
An open-source, privacy-friendly resume builder with clean templates and PDF and JSON export, free as a hosted app at rxresu.me or self-hosted.
Best for a polished resume without LaTeX and without paying for a resume service
Jake's Resume (LaTeX template on Overleaf)
Website · overleaf.com
The plain one-column LaTeX resume that engineering resume reviewers recommend most, which you can open and edit free in Overleaf's browser editor.
Best for students and freshers who want an ATS-friendly one-page tech resume quickly
Hiring Without Whiteboards
GitHub repo · poteto/hiring-without-whiteboards
A long-running list of companies that test candidates with practical, job-like work instead of whiteboard puzzles, with a note on each company's process.
Best for targeting employers whose interview style suits you (mostly US and remote-first companies)
r/developersIndia Community Wiki
Website · wiki.developersindia.in
Community FAQs on Indian job switches, from notice periods, referrals and salary talks to moving from service to product companies, plus resume and placement pages.
Best for Indian engineers switching jobs or moving from campus placements to off-campus hiring
AmbitionBox
Website · ambitionbox.com
An Indian company-review site where employees and candidates post salaries by designation, workplace ratings and round-by-round interview write-ups.
Best for researching Indian service and product companies' pay bands, interview rounds and culture
Anthropic - Candidate AI guidance
Official guide · anthropic.com
Anthropic's public rules for applicants: AI is welcome for research, practice and polishing your own drafts, but not in take-homes or live interviews unless allowed.
Best for knowing where AI is and isn't allowed before applying to an AI lab
Haseeb Qureshi - Ten rules for negotiating a job offer
Blog · haseebq.com
A two-part essay by a self-taught engineer on handling offers: keep competing options alive, get terms in writing, and push for more without souring the relationship.
Best for your first serious offer negotiation, especially with competing offers (pair it with Indian pay data)
Thoughtworks India - AI policy for recruitment
Official guide · thoughtworks.com
Thoughtworks' candidate rules: disclose GenAI use in your application; good use of AI tools is welcome in interviews if your answers show your own skills.
Best for candidates applying to Thoughtworks India, and anyone checking typical employer AI rules
Levels.fyi - Software engineer pay in India
Website · levels.fyi
Self-reported and partly offer-verified Indian pay data, split by company, level and city into base, stock and bonus, with other job families a click away.
Best for benchmarking an Indian offer or deciding what number to counter with
r/EngineeringResumes wiki
Community · reddit.com
The rulebook of a resume-critique subreddit, covering formatting, impact-focused bullets, templates and common mistakes, to read before posting for review.
Best for rewriting bullet points and getting free critiques before applying
How we pick
- Free first. 162 of the 190 resources are free, and 23 more have a free tier.
- Actively maintained, or older but still accurate. A few older guides stay because what they teach has not changed.
- We checked the links on 15 October 2026 and re-check them before every update. A few sites, such as Reddit, block automated checks; for those we confirmed the page exists another way.
- Every description is written in our own words, not copied from the source.
- We leave out AI interview assistants (Helpwing included), online-assessment answers, leaked questions, aptitude or placement-exam prep, and pirated books.
- Paid items are labelled Paid. There are 5, all books, and each one links to the author or publisher.
From the team that keeps this list
Helpwing is a desktop app for interviews where AI help is allowed: it hears the question and drafts an answer from your resume. It is not for online assessments or tests.