Confidential

Senior Software Engineer

YouTube

𝗜𝗻 𝗱𝗲𝘁𝗮𝗶𝗹𝗲𝗱 𝘃𝗶𝗱𝗲𝗼𝘀 𝗼𝗻 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗷𝗼𝗯 𝘀𝗲𝗮𝗿𝗰𝗵 𝘁𝗶𝗽𝘀, 𝗮𝗻𝗱 𝗡𝗮𝘂𝗸𝗿𝗶 𝗽𝗿𝗼𝗳𝗶𝗹𝗲 𝗵𝗮𝗰𝗸𝘀.

𝗜𝗳 𝘆𝗼𝘂 𝘄𝗮𝗻𝘁 𝘁𝗼 𝗹𝗲𝗮𝗿𝗻 𝗰𝗼𝗱𝗶𝗻𝗴, 𝗰𝗿𝗮𝗰𝗸 𝗶𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄𝘀, 𝗮𝗻𝗱 𝗴𝗲𝘁 𝗮 𝗴𝗿𝗲𝗮𝘁 𝗷𝗼𝗯, 𝘁𝗵𝗶𝘀 𝗰𝗵𝗮𝗻𝗻𝗲𝗹 𝗶𝘀 𝗳𝗼𝗿 𝘆𝗼𝘂.

𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗻𝗼𝘄 𝗮𝗻𝗱 𝗹𝗲𝘁’𝘀 𝗴𝗿𝗼𝘄 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿.

Digital Creator - Software Engineering

Software Engineer

Suma Soft Pvt Ltd

Software Developer

You can reach me at rajatgajbhiye.business@gmail.com for Collaborations, Brand partnerships, Business enquiries, or Session requests.

DSA a day can keep interview rejection away.

Yes, practicing at least one question a day can help you crack any SDE interview.

𝟭. 𝗙𝗼𝗰𝘂𝘀 𝗼𝗻 𝗗𝗲𝗽𝘁𝗵 𝗼𝘃𝗲𝗿 𝗕𝗿𝗲𝗮𝗱𝘁𝗵: 
 - Don't solve 500 coding problems aimlessly. Master around 100 core problems deeply instead: https://lnkd.in/dmukJy93
 - 40 Problems on Array, Strings, LinkedList, Stack & Queue, Binary Search, Trees, Graph, Sorting and Searching: https://lnkd.in/djnaPkeD
 - 40 Problems on Dynamic Programming (DP), Backtracking, Hashing, Heap, Tries, and Greedy Algorithms: https://lnkd.in/dF3h-Khk
 - 40 most asked DSA interview questions: https://lnkd.in/d5yMRNuC

𝟮. 𝗖𝗿𝗲𝗮𝘁𝗲 𝗮 𝗹𝗶𝘀𝘁 𝗼𝗳 𝗸𝗲𝘆 𝗾𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀: 
 - Use resources like "Strivers A2Z DSA Sheet" by Raj Vikramaditya to curate around 100 core problems.
 - https://lnkd.in/dQMGy9z

𝟯. 𝗠𝗮𝘀𝘁𝗲𝗿 𝗲𝗮𝗰𝗵 𝗱𝗮𝘁𝗮 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: 
 - Understand and implement them by hand. Know how they work internally to ace interview questions.
 - Basic to Advance DSA topics: https://lnkd.in/d4ws9xfr

𝟰. 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲 𝘄𝗶𝘁𝗵 𝗦𝗽𝗮𝗰𝗲𝗱 𝗥𝗲𝗽𝗲𝘁𝗶𝘁𝗶𝗼𝗻: 
 - Revisit problems after 3 days, a week, and 15 days. Break down solutions instead of rote memorization.
 - 3:7:15 Rule for DSA: https://lnkd.in/dW6a8wcg

𝟱. 𝗜𝗱𝗲𝗻𝘁𝗶𝗳𝘆 𝗿𝗲𝘂𝘀𝗮𝗯𝗹𝗲 𝘁𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 𝗮𝗻𝗱 𝗰𝗼𝗱𝗲 𝗯𝗹𝗼𝗰𝗸𝘀: 
 - Isolate common patterns like Binary Search or DFS for focused practice.
 - 14 problem-solving patterns: https://lnkd.in/daysVFSz
https://lnkd.in/dqNwG-AT
 - Tips to solve any DSA question by understanding patterns: https://lnkd.in/d9GVyfBY

𝟲. 𝗘𝘅𝗽𝗮𝗻𝗱 𝗶𝗻𝘁𝗼 𝗕𝗿𝗲𝗮𝗱𝘁𝗵: 
 - Once you've mastered core problems and techniques, tackle a wider range of questions. Keep it realistic and relevant to interview scenarios.

Here are a few steps you can follow that will help you crack this interview round:
1. Understand the requirements and write down important keywords.
2. Ask for edge cases in the input.
3. Explain the brute force solution in a minute.
4. Explain the optimal solution and discuss its asymptotic complexity quickly.
5. Write code in the language you're comfortable with. Dry run the code line by line to find mistakes.
6. Review the solution's asymptotic complexity.
7. Ask if tests or concurrent cases are necessary.
8. Ask for the interviewer's feedback.

Consistency is the key

Here are some of the best platforms to practice DSA problems
1. HackerRank
2. LeetCode
3. GeeksforGeeks
4. takeUforward Youtube Channel: https://lnkd.in/d-UNHu6B

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

Rajat Gajbhiye

Writes to 200k+ | SDE | AI & Tech Content Creator | JAVA, Python, AI Agents, MERN

Goldman Sachs Interview Experience
Compensation: 38LPA
Role: Java Backend Developer

𝗥𝗼𝘂𝗻𝗱 𝟭: 𝗢𝗻𝗹𝗶𝗻𝗲 𝗔𝘀𝘀𝗲𝘀𝘀𝗺𝗲𝗻𝘁
 - Problem 1: Validate a Custom Expression
 - Given a string with {, }, and *, where * can be {, }, or empty — validate if the expression is balanced.
 - Problem 2: K Most Frequent Words
 - Return top-k frequent words sorted by frequency and lexicographical order.

𝗥𝗼𝘂𝗻𝗱 𝟮: 𝗗𝗦𝗔 + 𝗝𝗮𝘃𝗮 𝗖𝗼𝗻𝗰𝗲𝗽𝘁𝘀
 - Q1: Reverse Linked List in Pairs, Input: 1 → 2 → 3 → 4 → 5, Output: 2 → 1 → 4 → 3 → 5
 - Q2: Core Java Topics
 - == vs equals()
 - How HashMap works internally
 - Collision handling (LinkedList vs Tree in Java 8+)
 - Load factor reasoning (0.75)
 - Java Memory Model
 - Thread safety & concurrency

𝗥𝗼𝘂𝗻𝗱 𝟯: 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 + 𝗟𝗼𝘄-𝗟𝗲𝘃𝗲𝗹 𝗗𝗲𝘀𝗶𝗴𝗻
 - Q1: Rate Limiter Design
 - Max 5 requests/user/min
 - Q2: Spring Boot Deep Dive
 - @Component vs @Service vs @Repository
 - Bean scopes and lifecycle
 - Startup process of Spring Boot
 - Internals of @Transactional and pitfalls

𝗥𝗼𝘂𝗻𝗱 𝟰: 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 + 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻
 - Q1: SQL Query Optimization
 - Indexed WHERE/JOIN fields
 - Removed SELECT *
 - Used EXPLAIN
 - Discussed denormalization & slow log analysis
 - Q2: API Gateway Auth & Security
 - OAuth vs JWT
 - How token expiration works
 - Can JWTs be invalidated?
 - Refresh token flows

𝗥𝗼𝘂𝗻𝗱 𝟱: 𝗛𝗥 + 𝗖𝘂𝗹𝘁𝘂𝗿𝗲 𝗙𝗶𝘁
 - Why Goldman Sachs?
 - Handling pressure & deadlines?
 - Experience with global teams?
 - Career growth plans?

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

10 Important System Design topics and learning sources:

LLD: 
 1. SOLID Principles: https://lnkd.in/dhv98APT
 2. All Creational Patterns: https://lnkd.in/dBbA7Htc
 3. All Structural Patterns: https://lnkd.in/dudjBtse
 4. All Behavioral Patterns: https://lnkd.in/gfwN7hTC
 5. Design Payments System: https://lnkd.in/gi4WXvft

HLD:
 1. Handle Concurrency in Distributed Systems: https://lnkd.in/dfyk7ddy
 2. Kafka in depth: https://lnkd.in/dhXRZ5u2
 3. Database indexing: https://lnkd.in/dR5fi_Tw
 4. Handle Distributed transaction: https://lnkd.in/dmrqYrmj
 5. How OAuth2.0 works: https://lnkd.in/gAgWtksn

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

Meta – 85% rounds are (DSA + System Design)
Google – 80% (DSA + System Design)
Amazon – 70% (DSA + System Design)
Microsoft – 75% (DSA + System Design)

If you want to clear any Software Engineer interviews, the formula is simple System Design and DSA

Here are the 16 most asked questions on these topics:

𝗗𝗦𝗔
1. Implement LRU/LFU Cache.
2. Find Median from Data Stream.
3. Word Ladder problem (shortest transformation).
4. Merge K Sorted Lists.
5. Detect Cycle in a Directed Graph.
6. Maximum Subarray Sum (Kadane + variations).
7. Kth Largest Element in a Stream.
8. Design a Scheduler with Task Priorities.
9. DSA Roadmap: https://lnkd.in/dvvVJ5zn

𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻
9. Design a scalable Chat Application (WhatsApp/Slack).
10. Design a URL Shortener.
11. Design a distributed Notification System.
12. How would you scale a Video Streaming platform?
13. Design a Payment System (like Razorpay/Stripe).
14. How do you design an API Rate Limiter?
15. Design an E-commerce Checkout System.
16. Design a Ride-Hailing app (Uber/Ola).

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

My journey from 6 LPA at SUMA to 26 LPA today in just 7 months. 

This is exactly what I did.

𝗦𝘁𝗲𝗽 𝟭: 𝗖𝗼𝗿𝗲 𝗝𝗮𝘃𝗮
 - Data Types
 - Loops & Conditionals
 - OOP
 - Exception Handling
 - Collections Framework (List, Set, Map, Queue)
 - Java 8+ Features (Streams, Lambda, Functional Interfaces)

𝗦𝘁𝗲𝗽 𝟮: 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗝𝗮𝘃𝗮
 - Multithreading & Concurrency
 - JVM Internals & Garbage Collection
 - Design Patterns (Singleton, Factory, Builder, Observer)
 - Annotations & Reflection
 - File Handling & Serialization

𝗦𝘁𝗲𝗽 𝟯: 𝗦𝗽𝗿𝗶𝗻𝗴 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸
 - Spring Core & IoC
 - Spring Boot (Auto Configuration, Starters)
 - REST API Development
 - Spring Data JPA & Hibernate
 - Security (JWT, OAuth2)

𝗦𝘁𝗲𝗽 𝟰: 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲
 - SQL (DDL, DML, Joins, Indexes, Transactions)
 - Query Optimization
 - NoSQL Basics (MongoDB, Redis)

𝗦𝘁𝗲𝗽 𝟱: 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀
 - JUnit & Mockito
 - Integration Testing
 - Logging (SLF4J, Logback)
 - Code Quality (SonarQube, Clean Code Principles)

𝗦𝘁𝗲𝗽 𝟲: 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗹𝗼𝘂𝗱 𝗘𝘀𝘀𝗲𝗻𝘁𝗶𝗮𝗹𝘀
 - Git & GitHub
 - CI/CD Basics (Jenkins, GitHub Actions)
 - Docker & Kubernetes Fundamentals
 - AWS / Azure / GCP Basics

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

PhonePe pays around 44-50LPA for SWE-2 and 80-85LPA for Senior SWE

This is the classic question they generally ask

𝗖𝗼𝗿𝗲 𝗝𝗮𝘃𝗮 / 𝗕𝗮𝗰𝗸𝗲𝗻𝗱
1. HashMap vs ConcurrentHashMap, equals/hashCode contract, immutability
2. Threads vs executors, JMM basics, GC tuning (G1/ZGC talk-throughs)
3. Java 8/11/17 features in practice (streams, records, var, switch, text blocks)
4. Resilience in prod: retries, timeouts, circuit breakers (what + where)
 
𝗗𝗦𝗔 / 𝗖𝗼𝗱𝗶𝗻𝗴
1. Arrays/Strings: two-sum variants, move zeros, anagrams, longest prefix
2. Graphs/Trees: BFS/DFS, shortest path, tree re-rooting, DSU
3. DP staples: LIS, coin change
4. Binary search patterns; streamy transforms (filter → map → reduce)

𝗦𝗤𝗟 / 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲
1. Index design & trade-offs; deduping rows; window functions vs GROUP BY
2. Transaction isolation, pagination strategies; read-vs-write models for feeds

𝗦𝗽𝗿𝗶𝗻𝗴 / 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀
1. Spring Boot auto-config, configuration profiles, Actuator/health
2. REST design: validation, versioning, idempotency; SAGA/outbox patterns
3. Kafka (ordering, retries, DLQs) and RabbitMQ (work queues) in payments flows
4. Observability: metrics/tracing; dealing with 300B+ metrics/day style scale

𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 
1. Design a UPI-style payment service
2. Transaction feed service, inspired by TStore. 
3. In-app Inbox/Alerts/chat-like pub-sub ala Bullhorn. 
4. Job scheduler at scale like Clockwork. 
5. Metrics platform for SLOs.

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

Flipkart interviewer: Your backend service works fine in staging, but crashes in production. Users can’t log in. Too many requests. You have 30 minutes to find the issue. Go.

I stared at the dashboards. No clear error logs. Latency spikes everywhere. Some requests succeed, some fail.

This wasn’t a coding problem. This was a real production issue.
 - How do you debug issues that only appear under real traffic load?
 - What tools do you use when logs, metrics, and traces don’t tell the full story?
 - How do you systematically narrow down whether it’s infra, DB, or app logic?

I started randomly restarting services and guessing possible root causes.

The interviewer stopped me: This is not how you debug at scale.

The truth about senior backend roles:
50% of your job isn’t building APIs. It’s keeping them alive when things go wrong.
 - Deadlocks that appear only under high concurrency
 - Memory leaks in background workers that slowly bring down servers
 - Database connection pool exhaustion in unpredictable traffic spikes
 - Race conditions in distributed systems that happen once a week
 - Latency bottlenecks caused by one slow dependency
 - Service crashes due to misconfigured infra in production only

Most developers practice coding features. Almost nobody practices debugging production incidents under pressure.

That’s why companies struggle to find senior backend engineers.

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

Give me 2 minutes,

I’ll tell you how to get interview calls

➤  𝗥𝗲𝘀𝘂𝗺𝗲 𝘁𝗶𝗽𝘀 𝘁𝗵𝗮𝘁 𝘄𝗼𝗿𝗸 𝗶𝗻 𝟮𝟬𝟮𝟱:
→ Each bullet should start with a strong action word(Built, Designed, Optimized, Integrated…)
→ Don’t repeat action words. If every line starts with “Worked on”, it looks copy-pasted
→ Every bullet should answer: What you built + what tech you used + what impact it had
→ Only 4 sections needed: Experience, Projects, Skills, Education
→ Backend roles? System design & API, backend tech
→ Frontend roles? Highlight UI performance + user features

𝗚𝗲𝘁 𝘆𝗼𝘂𝗿 𝗿𝗲𝘀𝘂𝗺𝗲 𝗿𝗲𝘃𝗶𝗲𝘄𝗲𝗱 𝗵𝗲𝗿𝗲:
 → https://lnkd.in/gXcPGdif 

➤ 𝗡𝗮𝘂𝗸𝗿𝗶 𝗧𝗿𝗶𝗰𝗸𝘀 𝗧𝗵𝗮𝘁 𝗪𝗼𝗿𝗸 𝗶𝗻 𝟮𝟬𝟮𝟱:
→ Create multiple Naukri profiles targeting different locations.
→ Use a different phone number and email address for each account.
→ Update your job profile every morning.
→ Include all relevant keywords for your job role in your resume.
→ Add those same keywords in the resume headline section.
→ Set your notice period to 15 days or less.
→ Use 6-7 bullet points to describe your each projects.
→ Follow a similar bullet-point format for the Employment section.
→ Add your LinkedIn profile link.
→ Include all job locations in the Preferred Work Location field.
→ Add any relevant certifications you have.
→ Replace career gaps with freelance work in your resume.

Repost it to help others!♻️

Disappear till DECEMBER 2025 and..

Clear all System Design Rounds

Here is HOW you can do it in 5 steps. 

𝗦𝘁𝗲𝗽 𝟭: 𝗙𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀
 - Networking Basics (HTTP, TCP/IP, Load Balancing)
 - API Design (REST vs GraphQL, Rate Limiting, Authentication)
 - Database Basics (SQL vs NoSQL, Indexing, Partitioning)
 - Caching Concepts (Strategies, In-Memory Caching, CDN)

𝗦𝘁𝗲𝗽 𝟮: 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 & 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲
 - Vertical vs Horizontal Scaling
 - Load Balancing Techniques
 - Database Replication & Sharding
 - Asynchronous Processing & Messaging Queues

𝗦𝘁𝗲𝗽 𝟯: 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀
 - Monolithic vs Microservices Architecture
 - Event-Driven vs Request-Response Model
 - CQRS and Event Sourcing
 - Fault Tolerance & High Availability

𝗦𝘁𝗲𝗽 𝟰: 𝗗𝗮𝘁𝗮 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁
 - CAP Theorem & Consistency Models
 - Storage Systems (Relational, NoSQL, Distributed)
 - Data Partitioning & Replication
 - Indexing & Query Optimization

𝗦𝘁𝗲𝗽 𝟱: 𝗛𝗮𝗻𝗱𝘀-𝗼𝗻 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲
 - Design and document real-world systems 
 - Explain trade-offs in your design decisions
 - Practice mock system design interviews
 - Get feedback and refine your approach

➤ 𝗛𝗲𝗿𝗲 𝗮𝗿𝗲 𝘀𝗼𝗺𝗲 𝗬𝗼𝘂𝘁𝘂𝗯𝗲 𝗖𝗵𝗮𝗻𝗻𝗲𝗹𝘀 𝘁𝗼 𝗳𝗼𝗹𝗹𝗼𝘄:
 1. Rajat Gajbhiye: https://lnkd.in/d2U-pprx
 2. Shrayansh Jain: https://lnkd.in/dUABhnbT
 3. Hussein Nasser: https://lnkd.in/dubTqr22
 4. Gaurav Sen: https://lnkd.in/dAPhQyBp
 5. Arpit Bhayani: https://lnkd.in/du8RyS7R

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

You'll clear every System Design Interview

If you can answer these 6 questions

1. Your entire Redis cache cluster becomes unavailable.
How does your system continue to function under this condition? What are your first steps toward recovery?

2. Can you describe a race condition scenario that might result in a user receiving the same notification multiple times? How would you address this issue at the application, caching, and database layers?

3. Your Postgres SOL database is experiencing frequent deadlocks during periods of high load. What are some common root causes, and how would you go about investigating and resolving this issue in a live production environment?

4. You chose Redis for caching, why not Memcached?
Which Redis data structures did you use, and what made them the right fit for your use case?

5. Walk me through your Cassandra data model. How did you design the partition key to align with your primary query patterns? If you needed to support a new query pattern that isn't compatible with the existing key, how would you handle the migration without downtime?

6. Describe a situation where you had to improve the performance of a slow database query. What steps did you take to identify and fix the issue?

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://lnkd.in/dte69Z5N
Use code 𝗦𝗗𝗘𝟰𝟬.

Stay Hungry, Stay FoolisH!

taplio

Rajat Gajbhiye's Linkedin Analytics

Rajat Gajbhiye

Performance ScoreRajat Gajbhiye's LinkedIn Performance

What is Rajat talking about?

Rajat Gajbhiye's Best Posts (last 30 days)

Ready to grow your LinkedIn presence?

taplio

.css-6ytdur{background-image:linear-gradient(284deg, rgba(39, 43, 72, 1) 0%, rgba(33, 47, 183, 1) 100%);color:transparent;-webkit-background-clip:text;background-clip:text;}Rajat Gajbhiye's Linkedin Analytics

Rajat Gajbhiye

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Rajat Gajbhiye's LinkedIn Performance

What is Rajat talking about?

Rajat Gajbhiye's Best Posts .css-1emoo84{font-size:var(--chakra-fontSizes-md);font-weight:400;color:var(--chakra-colors-gray-600);}(last 30 days)

Ready to grow your LinkedIn presence?

Rajat Gajbhiye's Linkedin Analytics

Performance ScoreRajat Gajbhiye's LinkedIn Performance

Rajat Gajbhiye's Best Posts (last 30 days)