Prabal Pratap Singh Parihar

Everything you need in one place: 📌 DSA neetcode.io/roadmap SYSTEM DESIGN github.com/donnemartin/syste… LLD / OOP refactoring.guru/design-patt… CS FUNDAMENTALS teachyourselfcs.com/ BACKEND roadmap.sh/backend SQL sqlbolt.com/ PROJECTS github.com/practical-tutoria… OPEN SOURCE goodfirstissue.dev/ JOBS wellfound.com/ ycombinator.com/jobs simplify.jobs/ RESUME overleaf.com/latex/templates… INTERVIEW PREP github.com/yangshun/tech-int… GITHUB github.com/ Don't bookmark everything and disappear. Pick a role. Follow the roadmap. Build something. Apply every week. Learn from every rejection. **Learning is preparation. Applying is how you get the opportunity. **

The DSA resource list I wish I had when I started. 📌 There are A LOT of good resources out there. Don't use all of them. Pick based on your goal. FOR INTERVIEW PREP 1. Striver A2Z DSA takeuforward.org/dsa/striver… 2. NeetCode neetcode.io/ 3. LeetCode leetcode.com/ 4. AlgoMaster algomaster.io/ 5. Blind 75 / Grind 75 techinterviewhandbook.org/gr… FOR BEGINNERS 6. HackerRank hackerrank.com/ 7. GeeksforGeeks geeksforgeeks.org/ 8. Abdul Bari youtube.com/@abdul_bari 9. MIT Introduction to Algorithms ocw.mit.edu/courses/6-006-in… FOR COMPETITIVE PROGRAMMING 10. Codeforces codeforces.com/ 11. CodeChef codechef.com/ 12. AtCoder atcoder.jp/ 13. CSES cses.fi/problemset/ 14. USACO Guide usaco.guide/ 15. CP-Algorithms cp-algorithms.com/ 16. Codeforces EDU codeforces.com/edu/courses FOR STRUCTURED PRACTICE 17. Striver A2Z 18. NeetCode 150 19. Grind 75 20. CSES Problem Set 21. USACO Guide 22. CP31 — Codeforces 800–1900 progression 23. A2OJ Ladders FOR ADVANCED ALGORITHMS 24. Competitive Programmer's Handbook cses.fi/book/book.pdf 25. USACO Guide 26. CP-Algorithms 27. KACTL github.com/kth-competitive-p… 28. AtCoder Educational DP Contest atcoder.jp/contests/dp 29. MIT 6.006 30. MIT 6.046J Advanced Algorithms ocw.mit.edu/courses/6-046j-d… FOR VISUAL LEARNING 31. VisuAlgo visualgo.net/ 32. Algorithm Visualizer algorithm-visualizer.org/ 33. WilliamFiset youtube.com/@WilliamFiset-vi… FOR CONTEST PRACTICE Codeforces → Regular contests + problemset CodeChef → Starters + practice AtCoder → ABC → ARC → AGC LeetCode → Weekly + Biweekly CSES → Structured problem solving USACO Guide → Topic-wise progression IF I HAD TO PICK ONLY ONE PATH Beginner: HackerRank / basic DSA course → Striver A2Z → LeetCode Interview focused: Striver A2Z → NeetCode 150 → LeetCode company problems → contests Competitive programming: CSES → Codeforces 800–1200 → Codeforces 1200–1600 → USACO Guide → CP-Algorithms Advanced: Codeforces → CSES → AtCoder → USACO Guide → CP-Algorithms → KACTL The biggest mistake: Collecting DSA resources instead of solving problems. Pick ONE main roadmap. Use the others when your main resource doesn't explain a topic well. Then solve. That's where the actual learning happens.

Google SDE Roadmap (3 to 4 Months) 📌 Everything I'd focus on if my goal was Google. 1. DSA (40%) NeetCode 150: neetcode.io LeetCode Google Tag: leetcode.com/company/google/ Tech Interview Handbook: techinterviewhandbook.org Target 250 to 300 problems, weighted toward graphs, trees, DP, and design a data structure questions since these show up disproportionately in Google loops. 2. System Design (20%) ByteByteGo: bytebytego.com System Design Primer: github.com/donnemartin/syste… Designing Data Intensive Applications: dataintensive.net 3. Core CS (10%) Master OS, DBMS, Computer Networks, and OOP. OSTEP: pages.cs.wisc.edu/~remzi/OST… GeeksforGeeks: geeksforgeeks.org 4. Low Level Design (10%) Refactoring Guru: refactoring.guru Head First Design Patterns 5. Behavioral and Googleyness (10%) Google scores this as its own interview, not small talk. Prep 6 to 8 STAR stories covering conflict with a teammate, a failure, an ambiguous problem, leading without authority, and disagreeing with a decision. 6. Projects Build 2 to 3 production-grade projects. Know the scaling decisions and trade-offs cold. Google interviewers probe project depth harder than most companies. 7. Mock Interviews (5%) Pramp: pramp.com Interviewing.io: interviewing.io Exponent: tryexponent.com Do 15 to 20 mocks, and start early so feedback shapes your DSA and LLD prep instead of just validating it at the end. 8. Resume and Referral Jake's Resume: overleaf.com/latex/templates… A referral meaningfully improves your recruiter screen odds versus a cold apply. Worth chasing early. 9. AI Knowledge This is the cherry on the cake, not the cake itself. Know how to use AI coding tools well, understand prompting, and be able to explain when and why you would or wouldn't use AI assistance in a real engineering workflow. It won't carry you through a DSA round, but it shows up in how you talk about your projects and workflow. 10. YouTube Striver, William Fiset, Abdul Bari, Gaurav Sen, ByteByteGo 11. Must Read Google Developer Blog: developers.googleblog.com Google Testing Blog: testing.googleblog.com Google Research Blog: research.google/blog/ If you can consistently solve 250 to 300 quality LeetCode problems, build 2 to 3 production-grade projects, understand System Design and Core CS, nail your behavioral stories, practice 15 to 20 mock interviews, and stay sharp with AI tools on the side, you'll be in a strong position for Google SDE interviews. Bookmark this.