2 Years of Effort, Packed Into One Powerful System Design Kit

It took me two years to build this guide while working as a software developer.

Fifteen-Day Preparation Strategy – Get prepped with all the necessary concepts in just 15 days.

System Design Concepts – Everything you need to know about system design.

50 Solved Questions – Detailed answers with HLD diagrams, LLD code, and in-depth explanations.

Trust me, this guide focuses on the 20% of topics that are asked in 80% of system design interviews.

Check out the System Design KIT here: https://topmate.io/rajat_gajbhiye/1446625

PS: Use the coupon code SDE10 to get a 10% discount (only for the next few users, so GO CHECK IT OUT FAST!!!)

If I am taking your System Design Interview, I'm definitely asking one of these 25 questions:

https://www.linkedin.com/posts/rajatgajbhiye_if-i-am-taking-your-system-design-interview-activity-7309937424187449345-8fEk

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You shouldn’t spend 3000+ days on 3000+ DSA problems!

But if you want to crack MAANG, you should solve these 10

https://www.linkedin.com/posts/rajatgajbhiye_dsa-collab-preplacedcollab-activity-7310151074747768832-Nlkm

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Just like me, top SDEs at MAANG will guide you through 1:1 training, mock interviews and end-to-end help💯

Start with a FREE session - https://explore.preplaced.in/O6PxwT

Exceptional React Developers master advanced topics and that’s what sets them apart

Senior SDEs know that building high-performance, flawless applications goes beyond syntax; it's about deeply understanding React's nuances and architecture.

https://www.linkedin.com/posts/rajatgajbhiye_frontenddevelopment-techinterviews-upskill-activity-7310292915824549888-yLfe

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A Microsoft engineer explains system design

https://www.linkedin.com/posts/ayushi-sharma-8a285a185_systemdesign-interviewpreparation-activity-7310158814303985665-DISs

Save the post you’ll need it during interview 👍🏼

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

https://www.linkedin.com/posts/rajatgajbhiye_i-am-getting-10-calls-weekly-in-2025-activity-7310513835528916992-xzZ-

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Hey everyone, I'm looking for a Reel editor to help with video editing. If you have experience or know someone who does, please reach out to me.

📩 Contact me here:

Tel: https://t.me/Rajatgajbhiye
Insta: https://www.instagram.com/rajat.gajbhiye_/

If you are someone who is trying to get into Data Engineering then

Watch this video.

Topic - Azure Data Engineer roadmap with free resources.

https://www.youtube.com/watch?v=iEQJYVCb8Fo

Do SUBSCRIBE to the youtube channel.

Next Video - In detailed explaination of How to get 30-40 calls weekly directly from recruiters through naukri.❤️

As a Software Engineer, you have to learn:

- DSA (Data Structures & Algorithms)
- System Design
- Object-Oriented Programming (OOP)
- Database Management (SQL, NoSQL)
- Version Control (Git, GitHub/GitLab)
- Cloud Services (AWS, GCP, Azure - Pick One)
- Microservices & APIs (REST, GraphQL, gRPC)
- Scalability & Performance Optimization

https://www.linkedin.com/posts/rajatgajbhiye_as-a-software-engineer-you-have-to-learn-activity-7310654320134266880-zozt

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I have researched lots of product-based companies like Amazon, Microsoft, Netflix, Zomato, Goldman Sachs, Paytm, J.P. Morgan etc., for SDE-1 roles, and found that these 20 system design questions are almost asked in every interviews, both at the fresher and experienced levels.

https://www.linkedin.com/posts/rajatgajbhiye_i-have-researched-lots-of-product-based-companies-activity-7310878049258889217-XJYA

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Companies hiring Software Engineers. ❤️

https://www.linkedin.com/posts/rajatgajbhiye_companies-hiring-software-engineers-activity-7311016649061548032-_p_O

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𝗬𝗼𝘂’𝗿𝗲 𝗡𝗼𝘁 “𝗦𝗮𝗳𝗲” 𝗝𝘂𝘀𝘁 𝗕𝗲𝗰𝗮𝘂𝘀𝗲 𝗬𝗼𝘂’𝗿𝗲 𝗮𝗻 𝗦𝗗𝗘!

Tech layoffs are hitting hard, and service-based employees are the first to be let go. With repetitive tasks, slow salary growth, and little job security, staying in a service-based role is a gamble.
The only way to stay ahead is by mastering 𝐃𝐒𝐀, 𝐒𝐲𝐬𝐭𝐞𝐦 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐚𝐧𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭.

If you're serious about landing a top-tier role, it's time to refine your problem-solving approach: https://bit.ly/3XWTcqX

I have researched lots of product-based companies like Amazon, Microsoft, Netflix, Zomato, Goldman Sachs, Paytm, J.P. Morgan etc., for SDE-1 roles, and found that these 20 system design questions are almost asked in every interviews, both at the fresher and experienced levels.

https://www.linkedin.com/posts/rajatgajbhiye_i-have-researched-lots-of-product-based-companies-activity-7310878049258889217-XJYA

Give it a LIKE for better reach :)

80% of the Big Tech Interviews are based on 20% of the LeetCode Problems

After completing a 365 day streak on LeetCode, I’ve realized that cracking DSA isn’t about solving 1000+ problems it’s about solving the right ones the right way.

https://www.linkedin.com/posts/rajatgajbhiye_80-of-the-big-tech-interviews-are-based-activity-7311235610789216256-h44G

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A Google engineer explains system design

https://www.linkedin.com/posts/anu-sharma-2002_tech-collab-activity-7311255261309018112-2oUF

Save the post you’ll need it during interviews 👍🏼

You're still a Software Engineer even if...

- You forget syntax or make small coding mistakes.
- You mix up programming languages or frameworks.
- You struggle with debugging sometimes.
- You get overwhelmed by complex algorithms or data structures.

https://www.linkedin.com/posts/rajatgajbhiye_youre-still-a-software-engineer-even-if-activity-7311379074084483073-H_J_

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Harsh Truth but True..

During Interview: DSA, LLD, HLD, JAVA, Spring boot, Javascript, SQL, Kafka, etc..

Actual Job: using IF/ELSE

https://www.linkedin.com/posts/rajatgajbhiye_harsh-truth-but-true-during-interview-activity-7311600311687643136-cGzN

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For those just starting in Software Engineering, I have faced many tech interview failures throughout my career. I've been told that I'm too slow, not experienced enough, failed coding screens, or simply received rejection emails after interviews.

https://www.linkedin.com/posts/rajatgajbhiye_for-those-just-starting-in-software-engineering-activity-7311731331141439489-zV3l

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Save this post you’ll need it during interviews ❤️

Give me 2 minutes, I’ll tell you

How to clear coding rounds

https://www.linkedin.com/posts/rajatgajbhiye_give-me-2-minutes-i-will-tell-you-how-to-activity-7311969252008198144-le_4

Save the post you’ll need it during the interviews 👍🏼❤️

The reason you’re struggling with 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 interviews isn't because you haven’t studied countless case studies or designed multitude of systems.

It is because you haven't mastered the core concepts.

https://www.linkedin.com/posts/rajatgajbhiye_the-reason-youre-struggling-with-%F0%9D%97%A6%F0%9D%98%86%F0%9D%98%80%F0%9D%98%81%F0%9D%97%B2%F0%9D%97%BA-activity-7312103823274127360-ecxe

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