Avnish Tiwari

Backend & Full Stack Developer | Node.js | System Design Enthusiast

📍 India
📧 avnishkt16@gmail.com
📄 Resume: https://drive.google.com/file/d/10uXzQJoKpmxXcykkrSYH5WWtw9zErV6F/view?usp=sharing
💼 Open to Backend / Full Stack Roles

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👨‍💻 Professional Summary

Backend-focused Full Stack Developer with strong foundations in data structures and scalable system design.
Experienced in building high-performance REST APIs, optimizing database queries, and designing modular backend architectures.

Solved 450+ DSA problems and ranked 1127 among 500,000 participants in TCS CodeVita.

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🧠 Technical Expertise

Backend Development

• Node.js, Express.js
• REST API Design
• JWT Authentication & Role-Based Access
• Caching & Performance Optimization

Databases

• MongoDB
• PostgreSQL
• SQL
• Firebase Firestore
• Elasticsearch
• Indexing & Query Optimization

Frontend

• React.js
• Next.js
• Redux
• Tailwind CSS

Cloud & Dev Tools

• Google Cloud Platform (GCP)
• Firebase
• Git & GitHub
• Postman
• Cloud Code

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🚀 Key Projects

🔹 Rento Mozo (Backend Architecture)

Built booking logic with:

• Dynamic pricing model
• Credit-based scoring
• Time-window inventory management
• Concurrency-safe booking system

🔹 ShareFree

File-sharing platform with:

• Auto file deletion (cron-based cleanup)
• Secure storage
• Email-based file sharing
• 1000+ users

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📊 Competitive Programming

• 450+ Problems Solved
• LeetCode Rating: 1600+
• CodeChef 1⭐
• TCS CodeVita Global Rank: 1127

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🎯 Current Focus

• System Design
• High RPS backend handling
• Database scaling strategies
• Production-ready architecture

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I build systems that are scalable, optimized, and production-oriented.