Devashish Belwal
Devashish Belwal

Full-Stack Engineer

Open to offers · Member since 14 Nov 2026
Location
Greater Noida, India
Desired salary
Unspecified
Work preference
Remote Only / Freelance
Experience level
Junior

About

Professional summary

I am a full-stack engineer focused on building scalable, reliable web applications, real-time systems, and AI-powered products. I work primarily with TypeScript, JavaScript, Python, Node.js, Next.js, PostgreSQL, Redis, and modern cloud-native development practices.

I have delivered freelance client solutions including an inventory platform with an ACID double-entry ledger, a clinic management system with concurrency-safe appointment booking, a multiplayer Ludo game, and a creator bio-link platform. My work emphasizes performance, data integrity, and practical product outcomes.

I specialize in real-time and distributed backend systems using WebSockets, Server-Sent Events, Redis Streams, BullMQ, and PostgreSQL. I have designed systems for high-throughput order processing, low-latency multiplayer interactions, streaming updates, and resilient asynchronous workflows.

I also build AI agent systems using OpenAI, Anthropic, and Gemini APIs. My experience includes voice AI, tool-calling workflows, retrieval-augmented generation, vector search with pgvector, semantic search, policy guardrails, and human-in-the-loop approval flows.

I care deeply about engineering quality, including transactional consistency, concurrency control, security, automated testing, CI/CD, and observability. I use Docker, AWS EC2, GitHub Actions, Jest, Prisma, and Turborepo to build maintainable production-oriented applications.

I am pursuing a Bachelor of Science in Data Science and Applications at the Indian Institute of Technology Madras, where I am developing further expertise in machine learning, database systems, and modern application development.

Skills

38 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Data Stores

Languages & Frameworks

Experience

Career history

Full-Stack Freelance Engineer Client Solutions

I engineered an inventory management platform using an ACID double-entry ledger and PostgreSQL row-level locking, eliminating race conditions and reducing monthly reconciliation time from two days to four hours. I also built ClinicPro, a clinic management system with optimistic-concurrency appointment booking and optimized composite B-tree indexes for sub-millisecond search across more than 1,000 patient records, contributing to a 20% increase in attendance.

I architected an authoritative multiplayer Ludo engine using Node.js WebSockets and Redis Pub/Sub, including atomic Lua-based matchmaking and a 60-second disconnect recovery period. I also developed CloneTree, a creator bio-link platform with Next.js 16, React 19, and Tailwind CSS, implementing dynamic edge Open Graph cards and bundle-splitting optimizations that achieved Lighthouse scores above 98.

Education

Learning history

Indian Institute of Technology Madras

B.S., Data Science and Applications

CGPA: 8.20/10. Coursework includes Machine Learning Techniques, Database Management Systems, and Modern Application Development.

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