π Hi, I'm
Parag Jain
I build intelligent products with LLMs β AI agents, RAG & MCP tooling, on scalable Node.js microservices & the MERN/MEAN stack.

About Me

Parag Jain
GenAI Engineer & Full-Stack Developer
π India
// who am I
I'm a GenAI engineer and full-stack developer with 4+ years of experience shipping production software. I build intelligent applications with LLMs β AI agents, RAG pipelines, and MCP tooling β using OpenAI, Anthropic Claude, and Gemini (LangChain / LangGraph), all on a scalable Node.js foundation. I design event-driven microservices with Kafka, Redis, and MongoDB, and craft polished frontends in React and Angular. I love turning ambiguous ideas into reliable, real-world AI products.
Experience & Education
My journey so far π
Senior Full Stack Developer
June 2025 β PresentSelcom
Remote Β· India
- Led platform modernization by redesigning the microservices architecture across the Duka ecosystem, improving scalability, maintainability, and overall system performance.
- Designed and built a scalable delivery-agent management system, replacing third-party integrations and reducing operational costs.
- Developed a dedicated Payment Microservice to decouple payment workflows and enable faster feature rollouts.
- Built backend services compatible with multiple system versions (V3/V4), ensuring smooth migration and backward compatibility.
- Engineered a real-time location-tracking system using Kafka and Redis, handling 300+ concurrent agents with improved latency and throughput.
- Implemented event-driven architecture using Kafka topics, partitions, and offset-based processing.
- Unified multiple admin systems into a centralized RBAC-based portal, improving access control and operational visibility.
- Resolved a long-standing search issue by integrating Elasticsearch, significantly improving search performance and reliability.
Full Stack Developer
Apr 2023 β June 2025BrainerHub Solutions
Ahmedabad
- Developed dynamic forms and reusable components with React.js and Chakra UI, enhancing user engagement and reducing form submission times by 20%.
- Automated backend tasks such as sending invites and notifications using Node.js and cron jobs.
- Integrated Google OAuth 2.0 and JWT for secure authentication, increasing user sign-ups by 15%.
- Converted Excel data into PDF reports using Node.js and ExcelJS, automating monthly report generation and reducing time by 50%.
- Optimized MongoDB queries with aggregation pipelines, reducing query execution time by 30%.
- Deployed applications on AWS EC2 and set up CI/CD pipelines for smooth updates, reducing deployment time by 40%
Full Stack Developer Bootcamp
July 2022 β Mar 2023Masai School
Bangalore
- Intensive 8-month, full-time bootcamp in full-stack web development completed before starting my first developer role.
- Built a strong foundation in Data Structures & Algorithms and problem-solving through daily coding practice.
- Learned frontend and backend end-to-end β JavaScript, React, Node.js, Express, and MongoDB β through project-based, test-driven assignments.
B-Tech in Civil Engineering
2015 - 2019Samrat Ashok Technological Institute
Bangalore Β· CGPA 8.2/10
- Led the college's technical fest organizing committee
- Published research paper on sustainable construction materials
- Won first prize in national-level bridge design competition
- Member of the Institute's Innovation Council
Skills & Technologies
An interactive galaxy of everything I build with β drag to explore π
GitHub Activity
Live snapshot of my open-source contributions & code π
Featured Projects
Drag, swipe or use the arrows to explore β¨
Multi-Vendor E-Commerce Marketplace
A full-stack multi-vendor marketplace (BigBasket/Blinkit-style) with a flexible product model (category attributes + variants + modifiers), RBAC with granular resource:action permissions, and Stripe-Connect split payments backed by a double-entry ledger and vendor payouts β spanning a Node/Express + TypeScript API, an Angular admin, an Angular SSR storefront, and a Flutter customer app.
create-backend β npm CLI
An open-source npm CLI (@iesparag/create-backend) that scaffolds a production-ready Node.js/Express + MongoDB + Socket.io backend in a single command β clean MVC architecture with JWT auth, Zod validation, centralized error handling, rate-limiting, and security middleware (Helmet/CORS).
Let's build something amazing
Got an idea, a role, or a freelance project? I'm just a message away.
Email me at
iesparagjain@gmail.com