Working on next-generation self-checkout systems for a Fortune 500 retail companies, architecting cloud-native microservices handling millions of daily transactions across 10,000+ retail locations.

• Implemented end-to-end WIC payments backend from scratch, enabling government assistance program support for next-gen self-checkout systems

Led full-stack development and infrastructure for Series B AgriTech startup (10M+ users), owning end-to-end delivery of multiple business-critical verticals while scaling platform to handle 1B+ monthly requests.

• Architected and owned complete quick commerce platform from 0 to 1 as sole engineer, delivering end-to-end marketplace solution including inventory management, order fulfillment, and payment processing, contributing to new revenue stream
• Led monetization strategy implementation, architecting subscription models and payment infrastructure that increased ARPU by 25% and drove $500+ daily ad revenue through AdMob/AdSense integration
• Designed and implemented high-performance feed service using MongoDB aggregation pipelines, optimizing query performance from 8s to 200ms for millions of documents, improving user engagement by 15%
• Engineered scalable backend services using TypeScript (NestJS), JavaScript (Express), and Python (FastAPI) handling 1B+ requests/month with 99.9% uptime across AWS and GCP infrastructure
• Spearheaded frontend migration from jQuery to Next.js, establishing modern architecture patterns and reducing page load times by 40%, directly improving conversion rates by 12%
• Optimized database performance across MySQL and PostgreSQL, implementing composite B-tree indices that reduced query latency from 45s to <1s for 10M+ user analytics queries
• Built reusable payments SDK with Razorpay integration, enabling seamless transactions across 3 product verticals and reducing integration time from 2 weeks to 2 days for new features
• Implemented JWT-based authentication replacing session-based auth, reducing infrastructure costs by 30% and saving 1B+ compute seconds annually
• Mentored and led team of 4 junior engineers, conducting code reviews, establishing engineering best practices, and driving adoption of testing standards that reduced production bugs by 40%
• Architected omnichannel messaging system (Firebase, WhatsApp, SMS) with personalized push notifications, increasing DAU retention by 4% and reducing churn by 8%
• Designed no-code CMS using Strapi for dynamic content management, empowering product team and saving 160+ engineering hours quarterly
• Established CI/CD pipelines with GitHub Actions, automating deployment across AWS/GCP with zero-downtime releases and automated rollback capabilities
• Drove technical debt reduction initiatives, refactoring legacy monolith into modular microservices, improving deployment frequency from weekly to daily

Contributed to Zoho Assist (remote desktop support platform used by 500K+ businesses), developing core features for cross-platform desktop and web applications.

• Developed core desktop application features using Electron, JavaScript, and C++ native bindings, enhancing remote support capabilities for enterprise customers
• Implemented key simulation feature enabling seamless copy/paste from remote hosts in web application, improving user productivity and reducing support ticket resolution time by 20%