Harshil Chudasama

Backend Developer with 2+ years of experience building scalable, production-ready systems using Node.js, Express, and MongoDB. Experienced in API design, performance optimisation, caching, and AI-driven systems (RAG) and focused on clean architecture, security, and high-performance backend systems.

Node.js Developer at Bitrix Infotech Pvt. Ltd. (2025-05 – Present)

• Built and deployed a RAG-based AI support agent using LangChain, ChromaDB, and LLMs (Ollama → Opencode), reducing response time from 5–10 minutes to 30–45 seconds.
• Implemented Redis caching for frequently accessed data, reducing database load and improving API response latency, and rate limiting to optimize API performance and ensure system stability under load.
• Designed context-aware prompt pipelines for accurate retrieval-based responses from production data.
• Developed a Docker-based malware detection tool using AST parsing (Acorn) and regex; identified a real-world backdoor vulnerability.
• Integrated crypto–fiat and crypto–crypto exchange systems using providers (Wert, Changelly, MoonPay), handling transaction lifecycle, webhook confirmations, and failure scenarios.
• Worked on Next.js apps with PWA optimisation and WhatsApp integrations.
• Worked on production-grade backend systems with a focus on scalability, performance optimization, and secure API design.
• Developed real-time communication systems using WebSockets and implemented RBAC for secure, permission-based workflows.

Freelance Backend Developer at Freelance (2024-07 – 2025-04)

• Worked on multiple backend projects focusing on API development, integrations, and performance optimization across different domains.

Full-Stack Developer (Next.js / Node.js) at Rain InfoTech (2023-01 – 2024-03)

• Developed an NFT marketplace with MetaMask integration, enabling blockchain-based transactions and synchronization using CouchDB.
• Built a land registry system for property ownership and transfer workflows using Next.js and MongoDB.
• Implemented automated database backup system with encryption, cloud storage integration, and scheduled cron jobs.

Bachelor Of Commerce – Akhand Anand Arts & Commerce College (2018 – 2021)