State-Scale EdTech Mobile App (10k+ concurrent users · 1L+ downloads)
Built an offline-first voice assessment app for government schools — works with zero internet connectivity using on-device speech recognition. Deployed across multiple states in English and Marathi, reaching 10,000+ concurrent students and 100,000+ downloads.
Replaced cloud-based ASR with a fully offline on-device pipeline (ONNX Runtime), cutting latency by 50% and removing the network dependency entirely for rural classrooms. Added RNNoise/WASM noise suppression and a progressive English/Marathi assessment engine on the Bhashni API, plus automated QC — bias-detection analytics and a 10% random re-assessment sampler to catch grading drift.
Multi-Tenant Retail SaaS Platform (500+ concurrent users · 1,000+ SKUs)
Built a subdomain-based multi-tenant POS and online store platform serving 500+ concurrent users across 1,000+ SKUs. Cut stock inconsistencies by 85%, and added UPI QR payments with barcode scanning and receipt printing for in-store checkout.
Per-tenant data isolation enforced via JWT-scoped auth
middleware across subdomains, with automated billing
workflows. Replaced read-then-write stock updates with
MongoDB atomic findOneAndUpdate operations,
eliminating race conditions and cutting stock
inconsistencies by 85% during peak billing. Built a
zero-MDR payment flow with dynamic UPI QR generation and
backend validation, plus hardware barcode scanning and
silent thermal-printer integration for merchant checkout.
Engineering Excellence & Leadership
Set up the team's CI/CD pipeline and code review standards. Mentored new engineers on React and React Native, including scoping a junior engineer's first project — an internal tool that replaced a manual HR Excel workflow, recognized by management.
Established CI/CD (GitHub Actions + Jest) automating build-test-deploy and enforcing Clean Architecture through regular code review, reducing production bugs. Mentored a junior engineer end-to-end by scoping their training around a real internal problem — they shipped a React Native + web IT asset inventory app that replaced manual HR Excel tracking. Also onboarded new joiners on React/React Native conventions and drove cross-functional collaboration with design and product.
