Blog

From 3 LPA to 25 LPA: Complete Resources (DSA, System Design, Projects & Resume)

Breaking into high-paying tech roles is not luck — it’s a roadmap. Thousands of engineers in India move from 3–5 LPA service-based jobs to 20–30 LPA product-based roles every year by following a structured plan.

1. Master DSA the Right Way

If you want a high-paying job, DSA is non-negotiable.
But you don’t need 500 problems.
You need proper guidance + structured problem list.

✅ Best DSA Teachers

✅ DSA Sheets (Based on Time You Have)

If you have 1–2 months:

If you have 2–3 months:

If you have 4–6 months:

🎯 Tip

Do quality problems, not random grinding.

2. Learn System Design (LLD + HLD)

For 20–25 LPA roles, system design matters — even for 1-2 years experience.

LLD Playlists (Low-Level Design)

  1. https://www.youtube.com/watch?v=rliSgjoOFTs&list=PL6W8uoQQ2c61X_9e6Net0WdYZidm7zooW

  2. https://www.youtube.com/watch?v=EpASu_1dUdE&list=PLhgw50vUymyckXl3D1IlXoVl94wknJfUC

  3. https://www.youtube.com/watch?v=fhdPyoO6aXI&list=PL5q3E8eRUieWtYLmRU3z94-vGRcwKr9tM

HLD Playlists (High-Level Design)

  1. https://www.youtube.com/watch?v=rliSgjoOFTs&list=PL6W8uoQQ2c63W58rpNFDwdrBnq5G3EfT7

  2. https://www.youtube.com/watch?v=SqcXvc3ZmRU&list=PLMCXHnjXnTnvo6alSjVkgxV-VH6EPyvoX

Best Book for System Design

🎯 Tip

Do at least 8–10 case studies: URL Shortener, Instagram Feed, WhatsApp, Zomato, Uber, etc.

3. Build Real Backend Skills (Spring Boot / Node / Django)

Companies want engineers who can build things end-to-end.

Spring Boot Playlist

A complete beginner-friendly guide:
 https://youtube.com/playlist?list=PLyHJZXNdCXscoyL5XEZoHHZ86_6h3GWE1&si=puYSAe_O5NVG4OD_

🎯 Build 2–3 solid projects:

  • Book Store API

  • E-commerce Backend

  • Chat Application

  • URL Shortener

  • Job Portal

Make sure to include:

  • Authentication

  • Database

  • Pagination

  • Caching (Redis if possible)

4. Create a Perfect Resume (ATS-Friendly)

Resume matters more than people think.

Best Free LaTeX Resume Template

https://latextemplateshub.com/categories/resume/RenderCV-Engineering-Resumes-27

Resume Tips

  • Keep it one page

  • Add 3–4 measurable achievements

  • Add 2 good projects

  • Add links to GitHub, Portfolio, LinkedIn

  • Remove irrelevant coursework

5. Consistent Interview Preparation Strategy

Here’s the proven workflow that works:

Daily Routine (2–3 hours/day)

  • 1 DSA Problem

  • 30 mins revision

  • 1 System Design topic

  • Work on project

  • Update notes

Weekly Routine

  • Mock interview (Pramp / Friends)

  • Revise DSA patterns

Monthly Routine

  • Resume update

  • Apply to 50–100 jobs

  • LinkedIn networking

6. Where People Go Wrong (And How to Avoid It)

❌ Doing random DSA
❌ Not revising solutions
❌ Only watching videos and not building projects
❌ Having a resume with no metrics
❌ No system design prep

✔️ What successful candidates do

  • Follow structured lists

  • Build projects that solve real problems

  • Do mock interviews

  • Track progress

  • Apply consistently

7. Final Roadmap Summary

Phase 1: DSA (2–3 months)

🔹 Striver A2Z or LC150
🔹 Aditya Verma for DP/Recursion

Phase 2: System Design (1 month)

🔹 LLD Playlist
🔹 Grokking SDI
🔹 10 case studies

Phase 3: Backend + Projects (1–2 months)

🔹 Spring Boot
🔹 2 strong projects

Phase 4: Resume + Applications (1 month)

🔹 LaTeX template
🔹 Apply daily
🔹 Network on LinkedIn

Conclusion

Going from 3 LPA → 25 LPA is 100% possible.
Thousands do it every year.
You don’t need expensive courses — only the right roadmap.

If you follow the resources in this blog step-by-step, you will be far ahead of 90% of candidates.