During my System Design round at Walmart, I used Redis.
At Oracle, I used PostgreSQL Sharding.
At Deloitte, I used Microservices with API Gateway.

https://www.linkedin.com/posts/rajatgajbhiye_during-my-system-design-round-at-walmart-activity-7400390566359851008-rkBO

Do read ❤️👍🏼

During my System Design round at Walmart, I used Redis.
At Oracle, I used PostgreSQL Sharding.
At Deloitte, I used Microservices with API Gateway.

Funny thing? Even though the systems were different, 80% of the questions came from just 20% of topics.

So I built something that fixes this.

System Design Guide: If you want to prepare for Amazon, Oracle, Walmart, Atlassian, PayPal, Uber, Deloitte, and Flipkart. My guide will give you clarity, direction & confidence instead of scattered material.

𝗣𝗔𝗥𝗧 𝟭: 𝟰-𝗦𝘁𝗲𝗽 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 (𝗜𝗳 𝗬𝗼𝘂𝗿 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗜𝘀 𝗶𝗻 𝟭𝟱 𝗗𝗮𝘆𝘀)
- Skip random study. Follow this structured sprint.
- How to approach a system design interview
- 15 must-know fundamentals
- My 3-step interview answer framework
- Real-world examples used in top companies

𝗣𝗔𝗥𝗧 𝟮: 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 𝗳𝗿𝗼𝗺 𝗕𝗮𝘀𝗶𝗰𝘀 → 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 (𝗦𝘁𝗲𝗽-𝗯𝘆-𝗦𝘁𝗲𝗽)
- Topics included: Scalability, Latency & Throughput, CAP/PACELC, Caching, Sharding, Queues (Kafka/RabbitMQ), Microservices, Consistency, Replication, API Gateway, WebSockets, gRPC, Event-Driven Design, Circuit Breaker, Load Balancers, Consistent Hashing, Real-World Architectures…and much more.

𝗣𝗔𝗥𝗧 𝟯: 𝗨𝗹𝘁𝗶𝗺𝗮𝘁𝗲 𝗤𝘂𝗶𝗰𝗸 𝗥𝗲𝘃𝗶𝘀𝗶𝗼𝗻 𝗖𝗵𝗲𝗮𝘁-𝗦𝗵𝗲𝗲𝘁
- Open this 30 minutes before the interview → High-retention recap.

𝗣𝗔𝗥𝗧 𝟰: 𝟰𝟱 𝗗𝗲𝘁𝗮𝗶𝗹𝗲𝗱 𝗟𝗟𝗗 + 𝗛𝗟𝗗 𝗤&𝗔
- With diagrams, real examples, reasoning & trade-offs.

𝟰𝟬𝟬𝟬+ 𝗽𝗲𝗼𝗽𝗹𝗲 𝗮𝗿𝗲 𝗮𝗹𝗿𝗲𝗮𝗱𝘆 𝘂𝘀𝗶𝗻𝗴 𝗶𝘁. 𝗢𝗳𝗳𝗲𝗿𝗶𝗻𝗴 𝟰𝟬% 𝗼𝗳𝗳 𝗳𝗼𝗿 𝗮 𝗹𝗶𝗺𝗶𝘁𝗲𝗱 𝘁𝗶𝗺𝗲!

𝗚𝗲𝘁 𝘁𝗵𝗲 𝗚𝘂𝗶𝗱𝗲 𝗵𝗲𝗿𝗲: https://topmate.io/rajat_gajbhiye/1446625
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

6 Rounds. 56LPA. The Google Interview Breakdown
Role: SDE-2
Application Mode: Recruiter Outreach

https://www.linkedin.com/posts/rajatgajbhiye_6-rounds-56lpa-the-google-interview-breakdown-activity-7400764942448201728-cvT4

Do read ❤️👍🏼

30LPA at BlackRock

This is the classic question they generally ask

https://www.linkedin.com/posts/rajatgajbhiye_30lpa-at-blackrock-this-is-the-classic-activity-7400891664019406848-fiy9

Do read ❤️👍🏼

Atlassian pays around 50-70LPA for SDE-1 and 60-90LPA for SDE-2

This is the classic question they generally ask

https://www.linkedin.com/posts/rajatgajbhiye_atlassian-pays-around-50-70lpa-for-sde-1-activity-7401123441543835648-13m2

Give it a Like for better reach 👍🏼❤️

Microsoft asked this exact question in 2 back-to-back interviews.
CTC: 30LPA

https://www.linkedin.com/posts/rajatgajbhiye_microsoft-asked-this-exact-question-in-2-share-7401270797278904320-3Pso

Do read ❤️👍🏼

My friend lost a 40LPA job offer from PhonePe
Role: Software Engineer

https://www.linkedin.com/posts/rajatgajbhiye_my-friend-lost-a-40lpa-job-offer-from-phonepe-share-7401474749761208322-6UOJ

Do read 👍🏼❤️

Some messages hit different.
Sharing one such testimony I received today

When someone says “I cracked 5 system design interviews after just Part-1 and Part-2” it reminds me why I started building this guide in the first place.

Not to teach everything.
But to give clarity + confidence.

Grateful. Motivated. And back to work.

Get the guide here: https://topmate.io/rajat_gajbhiye/1446625
Use code 𝗦𝗗𝗘𝟰𝟬.

𝟰𝟬% 𝗼𝗳𝗳 𝗳𝗼𝗿 𝗮 𝗹𝗶𝗺𝗶𝘁𝗲𝗱 𝘁𝗶𝗺𝗲!

Recently, I got a 20LPA Job Offer from Oracle
Position: Backend Engineer

https://www.linkedin.com/posts/rajatgajbhiye_recently-i-got-a-20lpa-job-offer-from-oracle-activity-7402930838746685440-jY-I

Do read ❤️👍🏼

I interviewed at Oracle → got 20 LPA offer
I interviewed at Deloitte → got 23 LPA offer
I interviewed at Walmart → Lost 28 LPA offer

After giving multiple interviews, one thing became clear: If you want to clear any Software Engineer interviews, the formula is simple: System Design and DSA

Get the System Design guide here: https://topmate.io/rajat_gajbhiye/1446625
Use code 𝗦𝗗𝗘𝟰𝟬.

If you want to prepare for Amazon, Oracle, Walmart, Atlassian, PayPal, Uber, Deloitte, and Flipkart. My guide will give you clarity, direction & confidence instead of scattered material.

Complete DSA roadmap
- https://youtu.be/WRA5OfeUP9I?si=SngQsCnFKdKV_eAo

Stay Hungry, Stay FoolisH!

DSA on SUNDAY

Here are 40 most asked DSA questions to clear your next interview -

https://www.linkedin.com/posts/rajatgajbhiye_dsa-on-sunday-here-are-40-most-asked-dsa-activity-7403290572548919297-RULN

Do read ❤️👍🏼

I am happy to share that 5000+ people have started using my interview preparation guide for software engineers.

I have received hundreds of positive feedbacks for the material which u can see on my topmate page.

https://www.linkedin.com/posts/rajatgajbhiye_i-am-happy-to-share-that-5000-people-have-activity-7403441520348942336-wBLU

Do read👍🏼❤️

10 projects that will get you shortlisted at MNCs

https://www.linkedin.com/posts/rajatgajbhiye_10-projects-that-will-get-you-shortlisted-activity-7403662679153836033-fidU

Do read ❤️👍🏼

No matter how good you are in your current role, always try to do this once in your career:

Start a project from scratch and do the basics right. You only understand real-world problems when you build something end to end.

Here are a few things you should definitely try: https://www.linkedin.com/posts/rajatgajbhiye_no-matter-how-good-you-are-in-your-current-activity-7403811047641440256-6wmV

Do read ❤️

No matter if you have 1, 2, or 5 years of experience.

Truth is:

If you are giving an interview at any good product-based company or MNCs, 3-5 rounds are just:
- DSA, Development (2 to 3 rounds), and
- System Design (1 to 2 rounds)

https://www.linkedin.com/posts/rajatgajbhiye_no-matter-if-you-have-1-2-or-5-years-of-activity-7404021314799374337-_MrV

Do read ❤️👍🏼

No matter how good you are in your current role, always try to do this once in your career:

Start a project from scratch and do the basics right. You only understand real-world problems when you build something end to end.

Here are a few things you should definitely try:

- Implement authentication (JWT, OAuth, sessions, etc.)
- Set up a database from zero (create schema, auth tables, migrations)
- Host your code on GitHub/GitLab/Bitbucket with branch protection rules
- Configure environments (dev, staging, prod) and secrets properly
- Write unit, integration & end-to-end tests
- Set up a CI/CD pipeline for automated testing & deployments
- Design APIs with proper documentation (Swagger/OpenAPI)
- Apply security best practices (validation, HTTPS, rate limiting, CORS)
- Containerize your app with Docker
- Deploy once on a cloud provider (AWS, Azure, GCP, Render, etc.)
- Add proper logging & error monitoring (Sentry, ELK, etc.)
- Use caching (Redis, Memcached) for performance
- Maintain code quality with linters, formatters, and static analysis
- Write a clear README and contribution guide

𝗞𝗲𝗲𝗽𝗶𝗻𝗴 𝘁𝗵𝗶𝘀 𝗶𝗻 𝗺𝗶𝗻𝗱, 𝗜’𝘃𝗲 𝗽𝗿𝗲𝗽𝗮𝗿𝗲𝗱 𝗶𝗻 𝗗𝗲𝗽𝘁𝗵 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 𝗚𝘂𝗶𝗱𝗲, 𝟰𝟬𝟬𝟬+ 𝗽𝗲𝗼𝗽𝗹𝗲 𝗮𝗿𝗲 𝗮𝗹𝗿𝗲𝗮𝗱𝘆 𝘂𝘀𝗶𝗻𝗴 𝗶𝘁. 𝗢𝗳𝗳𝗲𝗿𝗶𝗻𝗴 𝟰𝟬% 𝗼𝗳𝗳 𝗳𝗼𝗿 𝗮 𝗹𝗶𝗺𝗶𝘁𝗲𝗱 𝘁𝗶𝗺𝗲!

𝗚𝗲𝘁 𝘁𝗵𝗲 𝗚𝘂𝗶𝗱𝗲 𝗵𝗲𝗿𝗲: https://topmate.io/rajat_gajbhiye/1446625
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

I got 10+ calls weekly (in 2025!!!) directly from recruiters after using these two tricks.

https://www.linkedin.com/posts/rajatgajbhiye_i-got-10-calls-weekly-in-2025-directly-activity-7404731697180884994-K3Ff

Do read ❤️

Like and Repost for others ♻️ 👍🏼

After giving multiple interviews, one thing became clear: If you want to clear any Software Engineer interviews, the formula is simple: System Design and DSA

I interviewed at Oracle → got 20 LPA offer
I interviewed at Deloitte → got 23 LPA offer
I interviewed at Walmart → Lost 28 LPA offer
I interviewed at Cashfree Payments → got 28 LPA offer
I interviewed at TransPerfect → got 24 LPA offer

Here are the 16 most asked questions on these topics:

https://www.linkedin.com/posts/rajatgajbhiye_after-giving-multiple-interviews-one-thing-activity-7404886184319209472-rbIL

Do read 👍🏼❤️