Veerasamy M

Mern Stack Developer @Tata Consultancy Services

Chennai, IN

System Engineer (Frontend / MERN Developer)Tata Consultancy Services (TCS), Chennai | Feb 2021 – PresentDescription:Built and maintained React.js & Next.js front-end apps using MobX for state management, improving performance & UX.Designed refund & rebooking form processing submissions/month, integrating multiple APIs and optimizing user flows.Reduced page load time by 2–3 seconds with API optimization & caching.Developed & deployed 2 APIs with Hapi.js + Node.js, integrated seamlessly with Next.js frontend.Secured 3+ API endpoints with JWS/JWE encryption (RSA & EdDSA).Improved code quality using SonarQube (cut complexity <10, eliminated 23% code smells).Increased backend test coverage from 75% → 90%+ with Jest.Reduced insurance claim TAT by 25% for 100K+ users using React + Redux workflows.Built secure OTP-enabled airline payment workflows for 50K+ customers monthly.Boosted engagement by 15% with responsive, accessible (WCAG 2.1) UIs.Enabled 40% faster release cycles through Agile & CI/CD practices.