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RatanTiwari07/README.md

Ratan Tiwari

Java Full Stack Developer · Microservices · DSA Grinder · ACM Secretary

LinkedIn LeetCode Email GitHub


About

B.Tech CSE student at Acropolis Institute of Technology and Research (AITR), Indore, previously completed a Diploma in CS from Indo German Tool Room. I am the Secretary at the AITR ACM Student Chapter and an active core contributor to Team Zemo.

I focus on building scalable end-to-end applications, distributed architectures, and event-driven pipelines. Outside of code, I am an avid reader (huge Haruki Murakami fan) and a martial artist with 17 Karate titles, including 6 at the national level and 11 at the state level. Discipline isn't just a hobby; it's how I operate.


Core Stack

Languages Java 21 JavaScript C++ SQL

Backend & Architecture Spring Boot Microservices gRPC REST APIs Kafka RabbitMQ Spring AI

Data & Caching PostgreSQL MySQL Redis Docker

Frontend React.js

Tooling Git Postman Linux


Selected Projects

🎓 AITR Placement & Student Management Portal

End-to-end platform digitizing 100% of placement workflows · Live

  • RESTful backend with Redis caching supporting 3,000+ active users.
  • Replaced manual, paper-based systems for managing student profiles, interviews, and placement drives.
  • Deployed on Oracle VPS; comprehensive unit and integration testing.
  • Stack: Spring Boot · PostgreSQL · Redis · React.js

⚡ Real-Time Auction Engine

High-concurrency, distributed bidding system

  • Engineered a real-time bidding architecture capable of handling heavy concurrent traffic.
  • Implemented low-latency communication and event-driven data flows.
  • Stack: Java 21 · Spring Boot · gRPC · Kafka · Redis · PostgreSQL · React.js

🤖 Mock HR Interview Bot

AI-powered automated interview assistant

  • Built a specialized chatbot to simulate HR interview rounds and provide feedback.
  • Leveraged prompt engineering and AI integration to evaluate candidate responses dynamically.
  • Stack: Java · Spring Boot · Spring AI

🎟 TicketBlitz — Anti-Scalper Ticketing Platform

High-concurrency microservices ticketing system with AI bot detection

  • Polyrepo microservices: API Gateway, Auth, Booking, Event, Notification.
  • Redis Sorted Sets + distributed locks for waiting rooms — zero overselling under peak load.
  • Kafka for async event processing; Spring AI for scalper bot mitigation.
  • Stack: Java 21 · Spring Boot · PostgreSQL · Redis · Kafka · Spring AI · Docker

Achievements

🧩 750+ LeetCode problems solved · 200+ day peak streak
🏆 Hackathon Winner & National Web Design Competition Winner (AITR)
NPTEL Star — DAA, DBMS, Java
🥋 17 Karate titles (6 National, 11 State)
📜 IIT Bombay Spoken Tutorials — Python, C++

Leadership

Secretary, AITR ACM Student Chapter (Nov 2025 – Present)

  • Organized a 100-day DSA competition on HackerRank — 100+ participants, 50+ original problems.
  • Led 6+ technical competitions and hackathons.
  • Previously built and maintained the chapter's web presence as Web Developer for both AITR ACM and AITR CSI.

LeetCode Stats


Backend by day · Kata by discipline · Indore, India

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