Data Structure and Algorithm | Devops & Cloud | Backend

I build scalable backend systems and cloud-native applications focused on performance, cost optimization, and real-world impact.

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🔍 A multi-tenant SaaS platform that identifies and eliminates cloud infrastructure waste across AWS environments.

🔗 Live: Live
📂 Repository: Repo

• Built a Node.js + AWS SDK v3 engine to detect zombie resources across compute, storage, and networking (EC2, EBS, ELB, NAT, EIP, snapshots, security groups)
• Designed cost analysis logic using CloudWatch metrics to detect zero-usage resources and estimate real-time monthly savings
• Developed a multi-tenant backend with credit-based scans and OAuth authentication (Google/GitHub)
• Automated multi-region scanning using cron jobs and generated detailed cost-saving reports via email queue
• Containerized services using Docker and deployed a scalable architecture with high availability

Node.js • AWS SDK v3 • PostgreSQL • Redis • Docker • React

📂 Repository: Repo

• Built backend APIs for a decentralized MRV system using Node.js and PostgreSQL
• Developed Solidity smart contracts on Ethereum for transparent carbon credit verification
• Implemented secure authentication and blockchain-integrated workflows

Tech Stack: Node.js • Express • PostgreSQL • Solidity • Ethereum • Prisma

🔗 Live: Live 📂 Repository: Repo

• Implemented RBAC-based authentication using JWT and middleware authorization
• Built 15+ REST APIs with validation, error handling, and optimized MongoDB indexing
• Integrated Razorpay payment system and real-time progress tracking via WebSockets

Tech Stack: Node.js • MongoDB • AWS • WebSockets • Razorpay

🔗 Live: Live 📂 Repository: Repo

• Designed JWT-based authentication and admin-moderated publishing workflow
• Built scalable REST APIs with optimized database queries and indexing

Tech Stack: Node.js • MongoDB • JWT • Vercel

• 🥇 LeetCode: Solved 500+ problems | Top 0.8% (Rank 206/26,392) | Rating 1760
• ⭐ CodeChef: 2★ Programmer (Max Rating: 1417)
• 🏆 Hackathon: 1st place among 60 teams (Code Puzzle Hack)

Languages: Java, JavaScript, SQL
Backend: Node.js, Express
Databases: PostgreSQL, MongoDB
Cloud & DevOps: AWS, Docker, CI/CD
Tools: Git, Postman, Linux

• Email: chauhanprince21153366@gmail.com
• LinkedIn: https://linkedin.com/in/prince1184
• Linktree: https://linktr.ee/prince1184
• Portfolio: https://princekumar-fullstack-developer.vercel.app/
• Resume: https://drive.google.com/file/d/12Lzixkw1zxerdY2gNzbG7fIgK5h8_mTT/view?usp=sharing

• Backend system design & scalability
• Cloud cost optimization & AWS architecture
• DSA & high-performance problem solving