Tarun Sharma

Software Engineer – Frontend

Think201

May 2023 - Apr 2026

Owned frontend development end-to-end for an NDA-protected enterprise SaaS platform (Next.js, TypeScript, React Query) from inception through production, using Cursor daily to speed up development. Cut redundant network requests by 60-80% by architecting React Query (TanStack Query) caching, deduplication, and shared query state (SWR-pattern data synchronization), improving performance and reducing backend load. Built a 30+ component reusable UI library using Atomic Design and styled-components, accelerating feature delivery by 25-40% and reducing duplicate code and UI bugs. Engineered event-driven WebSocket updates for long-running document-parsing jobs, eliminating 2-3s polling delays and cutting status-check API traffic by 80-90%. Implemented secure authentication and authorization, including conditional MFA, role-based access control (RBAC), and protected/authenticated routing. Drove test coverage to ~80% using Cypress (E2E) and Mock Service Worker, integrating regression testing into the CI/CD pipeline before every release, using Git for version control and branching strategy. Shipped a cross-platform React Native booking app (10,000+ downloads) for iOS, Android, and Web, with Razorpay payments, Google Sign-In, and Firebase notifications. Independently launched a second React Native app — a personal expense tracker (Expo, React Native Paper) — with an integrated AI financial-planning chatbot that analyzed income, recurring expenses, and spending habits to generate personalized savings and budgeting recommendations. Created an AI-powered onboarding chatbot (React.js, Sass) for a Bill & Melinda Gates Foundation-sponsored initiative, helping stakeholders construct and implement data-informed behavioral change programs. Developed an internal PWA prototype with full CRUD functionality, extended to mobile via Capacitor.js. Stepped in to lead the team through transitions during the project lead's absence — ran status calls, documented the project for new hires, and covered release week solo. Partnered daily with teammates across Belgrade, San Francisco, and Delhi via Agile/Scrum ceremonies (standups, sprint planning, retrospectives) to sync priorities and prevent blockers before they hit delivery. Integrated Hotjar analytics to track user behavior and inform iterative UX improvements across the application.