I have researched lots of top MNCs like Amazon, Microsoft, Google, Uber, Tiger Analytics, Databricks, etc., for Data Engineer roles (since it's booming) and found that here are some topics that are asked in every interview, both at the fresher and experienced levels.

https://www.linkedin.com/posts/rajatgajbhiye_dataengineering-amazon-systemdesign-activity-7340951398173323264-830h

Give it a Like for better reach 👍🏼

System Design used to scare me.

I remember preparing for my first few interviews — reading random blogs, watching hours of YouTube videos, and still feeling lost when someone asked me about CAP or caching strategies. 😓

That’s when I realized…

System design isn’t about knowing everything. It’s about understanding the right things deeply.

Over time, I figured out that 80% of system design interview questions come from just 20% of concepts.

So, I created this guide:
Focused. Structured. Real-world backed.

Here’s what’s inside👇

✅ 4-Step Roadmap (esp. if your interview is in 15 days)
✅ 15+ core concepts broken down in simple terms
✅ Basics → Advanced (CAP, Queues, Microservices, Caching, DBs, etc.)
✅ 50 System Design Q&A (with diagrams + examples)
✅ Ultimate Cheat Sheet for quick revisions

Use coupon code SD20 for 20% OFF (limited slots only)

Check out the Guide here: https://topmate.io/rajat_gajbhiye/1446625?coupon_code=SD20

Hey fam,
A big THANK YOU to everyone who supported me over the last few days. Your comments, retweets, and messages truly meant a lot.

As a small token of gratitude, I’m sharing a FREE DSA Roadmap for all of you who stood by me.

Check it here: https://www.linkedin.com/posts/rajatgajbhiye_never-bet-against-dsa-trust-me-if-you-do-activity-7343278067865255938-YM22

Let’s keep growing and helping each other :)

Study these 45 problems well and you have prepared for 99% of your System Design Interviews

https://www.linkedin.com/posts/rajatgajbhiye_study-these-45-problems-well-and-you-have-activity-7343514564866494465-rkfD

Most asked System Design Questions, save the post you’ll need it during interviews :)

Give it a Like for better reach ❤️

Don't aim for this:

Java - 25%
Spring Boot - 25%
Microservices - 25%
System Design - 25%

Aim for this:

Java - 100%
Spring Boot - 25%
Microservices - 25%
System Design - 25%

Master one skill deeply, then build around it!

https://www.linkedin.com/posts/rajatgajbhiye_dont-aim-for-this-java-25-spring-activity-7343648180137267200-gQea

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No HLD, no Job

Save this roadmap — it’ll literally decide your interview outcome.

https://www.linkedin.com/posts/rajatgajbhiye_no-hld-no-job-save-this-roadmap-itll-activity-7343995573085044736-picw

Give it a like for better reach 👍🏼

I screwed up 3 interviews because I couldn't explain my projects properly

Here is how you can explain your project in an interview

https://www.linkedin.com/posts/rajatgajbhiye_i-screwed-up-3-interviews-because-i-couldnt-activity-7344249404091969536-f2vT

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Oracle Interview Experience
Compensation: 30L
Position: Member of Technical Staff
Application Method: Direct Application

https://www.linkedin.com/posts/rajatgajbhiye_oracle-interview-experience-compensation-activity-7344356387285544961-11bX

Give it a Like for better reach 👍🏼❤️

Without Leetcode, you cannot pass interviews.

Without side projects, your resume will not stand out.

Should you focus on LeetCode or build another project? To get your first job, you need a mix of both.

But the real problem? Many people don’t know what to build.

I’ve been there too.. motivated to start coding but stuck staring at my screen, Googling "best programming projects" and eventually ending up watching YouTube videos instead.

This cycle continues until you start building.

To break this cycle, here’s a list of projects to boost your portfolio + DSA patterns to crack coding interviews.

𝟭𝟬 𝗖𝗼𝗱𝗶𝗻𝗴 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝘁𝗼 𝗕𝘂𝗶𝗹𝗱 𝗬𝗼𝘂𝗿 𝗥𝗲𝘀𝘂𝗺𝗲

𝟭𝟯 𝗖𝗼𝗱𝗶𝗻𝗴 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 𝘁𝗼 𝗖𝗿𝗮𝗰𝗸 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄𝘀

https://www.linkedin.com/posts/rajatgajbhiye_without-leetcode-you-cannot-pass-interviews-activity-7344587170747183105-JncV

Save the post ❤️👍🏼

Design Zomato? Design Netflix?

No, start with these 3 underrated problems.

Everyone jumps to building complicated systems on day one of system design prep.

But no one talks about the real learning in the underrated ones.

Here are 3 simple but most-asked problems to start with:

https://www.linkedin.com/posts/rajatgajbhiye_design-zomato-design-netflix-no-start-activity-7344723718503301121-UNiz

Give it a Like for better reach 👍🏼❤️

I wanted to learn Software Engineering, so I watched 100+ videos on YouTube.

80% of them were a complete waste of time.

But this 9-playlist will teach you more skills than a 4-year degree.

https://www.linkedin.com/posts/rajatgajbhiye_i-wanted-to-learn-software-engineering-so-activity-7344945216123994112-h12l

Give it a Like for better reach 👍❤️

DSA on SUNDAY

40 most asked DSA questions to clear your next interview

https://www.linkedin.com/posts/rajatgajbhiye_dsa-on-sunday-40-most-asked-dsa-questions-activity-7345081154716217344-HlAG

Give it a Like for better reach ❤️👍🏼

Mindtickle Interview Experience
Compensation: 38L
Position: SDE 2

https://www.linkedin.com/posts/rajatgajbhiye_mindtickle-interview-experience-compensation-activity-7345304859039993856-0ppv

Give it a Like for better reach ❤️👍🏼

Projects in 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 and 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 that will stand out in an interview.

https://www.linkedin.com/posts/rajatgajbhiye_projects-in-%F0%9D%97%A6%F0%9D%98%86%F0%9D%98%80%F0%9D%98%81%F0%9D%97%B2%F0%9D%97%BA-%F0%9D%97%97%F0%9D%97%B2%F0%9D%98%80%F0%9D%97%B6%F0%9D%97%B4%F0%9D%97%BBand-activity-7345443519559319554-o0mz

Give it a Like for better reach ❤️👍🏼

Leetcode was HARD

Until I found these 14 Problem-Solving Patterns

https://www.linkedin.com/posts/rajatgajbhiye_leetcode-was-hard-until-i-found-these-14-activity-7345662442007420930-qZ94

Give it a Like for better reach ❤️👍🏼

Trust me, System Design is not HARD.

If you follow these 5 steps

https://www.linkedin.com/posts/rajatgajbhiye_trust-me-system-design-is-not-hard-if-activity-7345805909765320705-PCg8

Give it a Like for better reach 👍🏼❤️

Spring Boot Roadmap

https://www.linkedin.com/posts/rajatgajbhiye_spring-boot-roadmap-phase-1-basics-activity-7346040726654189569-Ez43

Give it a Like for better reach ❤️👍🏼

I wish I had a cheat sheet like this when I was prepping for System Design Interviews

Trust me, it would’ve saved me so much time. But now, I’m sharing it with you.

https://www.linkedin.com/posts/rajatgajbhiye_system-design-cheatsheet-activity-7346171909996216320-I-v7

Give it a Like for better reach 👍🏼❤️

System Design used to scare me.

I remember preparing for my first few interviews — reading random blogs, watching hours of YouTube videos, and still feeling lost when someone asked me about CAP or caching strategies. 😓

That’s when I realized…

System design isn’t about knowing everything. It’s about understanding the right things deeply.

Over time, I figured out that 80% of system design interview questions come from just 20% of concepts.

So, I created this guide:
Focused. Structured. Real-world backed.

Here’s what’s inside👇

✅ 4-Step Roadmap (esp. if your interview is in 15 days)
✅ 15+ core concepts broken down in simple terms
✅ Basics → Advanced (CAP, Queues, Microservices, Caching, DBs, etc.)
✅ 50 System Design Q&A (with diagrams + examples)
✅ Ultimate Cheat Sheet for quick revisions

Use the coupon code SDE10 to get a 10% discount (limited slots only)

Check out the Guide here: https://topmate.io/rajat_gajbhiye/1446625