🚀 Backend Developer | Java | Spring Boot | Distributed Systems
📍 New Delhi, India
📫 mishrakaustav10@gmail.com

I'm a passionate Backend Engineer specializing in designing and building high-performance, scalable, and secure applications. With a strong foundation in Java, Spring Boot, and system design, I enjoy solving complex engineering problems and optimizing application performance.

• 💡 Experienced in building RESTful APIs, distributed systems, and microservices.
• 🔒 Focused on security, performance optimization, and scalability.
• 🎯 Love working with Java 8+, Spring Security, Redis, Docker, and PostgreSQL.
• 🏆 GATE 2022 AIR 11 | 750+ problems solved on LeetCode.

💻 Programming Languages: Java, C++, JavaScript, SQL
⚡ Backend: Spring Boot, Spring Security (JWT, Role-Based Auth), Hibernate, REST APIs
🗄️ Databases: MySQL, PostgreSQL, Redis
📦 DevOps & Tools: Docker, Git, Postman
🧠 CS Fundamentals: Data Structures & Algorithms, OOP, Operating Systems, Computer Networks

An AI-driven finance tracker for automated budgeting and expense tracking.

• 📌 AI receipt scanner with 99% accuracy using Google Gemini API.
• 📊 Automated budget insights & expense tracking, reducing manual data entry by 90%.
• 🛡️ Secured platform with JWT authentication & role-based access control.
• ⚡ Redis caching & rate limiting for optimized performance.

Tech Stack: Spring Boot, Spring Security, Google Gemini API, Redis, Bucket4j, Spring Scheduler

🔗 Live Demo | GitHub

A fast, secure, and customizable URL shortener with real-time analytics.

• ⚡ Optimized redirection latency by 60% using Redis caching.
• 🔑 JWT-based authentication with role-based access control.
• 📈 Real-time link performance tracking using Chart.js.

Tech Stack: Spring Boot, Spring Security, JWT, Redis, Docker, React Query, Chart.js

🔗 Live Demo | GitHub

A smart movie recommendation system powered by AI and natural language processing.

• 🎬 Personalized movie suggestions based on user mood & scene descriptions.
• ⚡ 70% reduced query latency using Redis caching & optimized API responses.
• ⏳ Rate limiting with Bucket4j to prevent excessive API usage.

Tech Stack: Spring Boot, Spring AI, Redis, Bucket4j, Docker, React Query, Google Gemini API

🔗 Live Demo | GitHub

• 🏅 Secured All India Rank 11 among 120,000+ candidates in GATE 2022.
• 💡 Solved 750+ problems on LeetCode, sharpening algorithmic & problem-solving skills.
• ✅ Selected for multiple PSUs including SAIL, NTPC, and more.

🌐 Portfolio: GitHub Profile
💼 LinkedIn: Kaustav Mishra
💻 LeetCode: mkaustav07

Let's build something amazing together! 🚀