Vishal Yadav
6+ years building production level backend solutions, serverless architectures, microservices architectures, and LLM-powered backends — most recently for Arm Holdings.
I build the backend that makes
AI actually work in production.
I'm a Backend Engineer based in Noida, India — building systems that don't just demo well, they run at scale.
Most recently I was embedded at Arm Holdings, the semiconductor company powering 99% of the world's smartphones. I designed their enterprise RAG system from scratch — document chunking, Pinecone vector embeddings, LangChain orchestration, Azure OpenAI response generation, and all the AWS Lambda serverless infrastructure underneath.
In my own time I built this very portfolio — an AI-powered site with a RAG chatbot backed by Pinecone, LangChain, OpenAI and Gemini. Because I don't just integrate GenAI — I build it.
Clients & companies
6+ years, real production systems.
Software Engineer – Backend & GenAI
Innovify · Client: Arm Holdings
- ▸Architected full RAG pipeline for Arm's enterprise knowledge retrieval: document chunking → Pinecone embeddings → LangChain orchestration → Azure OpenAI response generation
- ▸Built and deployed production serverless microservices on AWS Lambda, API Gateway, S3, and RDS powering Arm's backend workflows
- ▸Designed AI-powered prediction scoring microservice using GPT models for automated decision pipelines — live in production
- ▸Integrated Azure AI services and multiple LLM APIs (OpenAI + Gemini) beyond chatbot use cases
Technologist – Backend Engineer
Kratin Software · Client: Lunajoy Health
- ▸Led end-to-end backend of Lunajoy Health's appointment booking platform — improved booking efficiency by 30%
- ▸Deployed serverless workflows on AWS Lambda + Amazon RDS + PostgreSQL, cutting data retrieval time by 25%
- ▸Delivered Stripe tokenization + HIPAA-compliant payment flows — lifted payment completion by 20%
Technology Lead – Node.js
Mobiloitte Technology
- ▸Led backend team of 5 engineers — task allocation, architecture decisions, code reviews, and conflict resolution
- ▸Built HOVR NFT Marketplace — full backend with Web3 blockchain integration, NFT minting/trading APIs, and Stripe payment processing
- ▸Developed Crypto E-wallet backend with real-time balance sync and secure transaction APIs
- ▸Built Thabo Event Management platform backend and a real-time social media sync service
- ▸Delivered PayPal-integrated Restaurant App with order management and real-time kitchen sync
Key Projects
Sr. Software Developer
Mckinsol Consulting
- ▸GXP · Under Armour — built a high-performance article processing system that ingested thousands of purchase order files from an SFTP server, processed them concurrently using Node.js Worker Threads, stored structured data in MongoDB, and served a UI for selecting articles and checking details for printing hang tags — deployed on SAP BTP Cloud
- ▸SpotYourDeal — built full backend for an e-commerce platform (spotyourdeal.com) including product catalogue, order management, and Razorpay payment gateway integration
- ▸PVH Corp — delivered SAP Request Management portal and HR Portal backend APIs
- ▸SmileADay — built crowdfunding platform backend with campaign management and payment flows
- ▸Deployed applications across SAP BTP Cloud, DigitalOcean, and Firebase; managed SQL & PostgreSQL database validation
Key Projects
Things I've actually shipped.
Not demos. Not tutorials. Production systems.
AI Portfolio + RAG Chatbot
Personal Project · 2024–Present
Built from scratch in my spare time — a GenAI-powered portfolio with a live RAG chatbot that answers real-time questions about me. Pinecone for vector storage, LangChain for orchestration, OpenAI + Gemini for multi-model responses. Deployed on Vercel.
Enterprise RAG System — Arm Holdings
Innovify · Client: Arm Holdings · 2025
Designed and shipped a production RAG pipeline for Arm's enterprise knowledge base. Document chunking strategy, embedding generation, vector similarity search via Azure OpenAI, and Node.js APIs orchestrating the full retrieval → LLM response flow on AWS serverless infrastructure.
AI Prediction Scoring Microservice
Innovify · Arm Holdings · 2025
GPT-powered scoring microservice integrated into Arm's automated decision workflows. Not a prototype — a live system making automated decisions in production via serverless AWS architecture.
Healthcare Booking Platform — Lunajoy
Kratin Software · 2024
End-to-end backend for Lunajoy Health's doctor + patient appointment booking. AWS Lambda + RDS + PostgreSQL under HIPAA compliance. Stripe tokenization boosted payment completion by 20%, AWS optimization cut data retrieval by 25%.
SmileADay
Mckinsol Consulting · 2020–2023
A PHP-based web application that simplifies secure online payments by seamlessly integrating both PayPal and Stripe payment gateways.
TimesOfPeople HR Portal
In-House Enterprise Solution
Comprehensive in-house HR management portal. Engineered the backend to handle complex employee details,attendanceTracking, timesheet tracking, agile project and sprint management, dynamic appraisal workflows, and seamless invoice reimbursements.
GXP Article Processing System — Under Armour
Mckinsol Consulting · Client: GXP / Under Armour · 2020–2023
Built a high-throughput system that pulled thousands of purchase order files from an SFTP server, processed them concurrently using Node.js Worker Threads to maximize CPU utilisation, stored structured article data in MongoDB, and served a custom UI for warehouse staff to search, select, and verify article details before printing hang tags for Under Armour products. Deployed and hosted on SAP BTP Cloud.
HOVR NFT Marketplace
Mobiloitte Technology · 2023–2024
Full-stack NFT marketplace backend with Web3 blockchain integration. Users can mint, list, buy and trade NFTs. Built smart contract interaction APIs in Node.js, integrated Stripe for fiat payments alongside crypto, and implemented real-time ownership and transaction sync.
SpotYourDeal — E-commerce Platform
Mckinsol Consulting · spotyourdeal.com · 2020–2023
Backend for a full e-commerce platform. Built product catalogue management, inventory tracking, order lifecycle APIs, and integrated Razorpay payment gateway for seamless checkout. Deployed on DigitalOcean with PostgreSQL and Node.js.
The full technical stack.
Generative AI & LLM
Backend & APIs
Cloud & Serverless
Databases
Also works with
Let's build something remarkable.
I'm actively looking for remote Node.js Backend / GenAI engineering roles with companies. If you're hiring — or just want to talk about my professional journey — let's connect.
Built by Vishal Yadav · Next.js · Pinecone · LangChain · OpenAI · Gemini · Vercel