Prabin Senapati

React / Next.js Developer

Applaunch

Feb 2023 - Aug 2026

Owned and scaled business-critical web applications, writing clean, maintainable, testable production-grade TypeScript and React.js/Next.js code and delivering 12+ production features and products used by real customers. Built reusable components, shared libraries, and modular frontend architecture, using custom hooks and rendering optimization to keep state and re-renders predictable. Implemented internationalization with React i18next and integrated CMS-managed content for multi-language content delivery. Optimized web performance: improved global load times by up to 40% for video-heavy pages through Bunny CDN, and used React Query caching and Lighthouse audits (Core Web Vitals) to guide further improvements through bundle-size and code-splitting work. Built observability into the surfaces I owned: integrated Sentry for proactive error tracking and performance monitoring, and configured Google Analytics to expose engagement, traffic sources, and conversion, so issues and user drop-offs were visible early. Implemented Stripe-based subscription and payment flows on revenue-facing surfaces, with zero reported payment-flow incidents. Applied SEO best practices in Next.js (metadata and canonical strategy, structured data, SSR-rendered templated pages) to improve search visibility, and used Turbopack-based tooling for fast builds. Worked with micro frontend architecture, keeping modules independently structured and shared UI components consistent across surfaces. Built multi-step forms with typed schema validation (Zod and Yup), clear error states, and resilient submission handling, applying web security fundamentals (XSS/CSRF protection, CSP and security headers, secure token and cookie handling). Built web surfaces for mobile webviews embedded in Android/iOS apps, handling app-to-web communication. Owned features end to end, from design and technical specification through API integration, testing, and release, handling ambiguity and delivering on schedule in Agile sprints. Built modular, reusable component libraries from Figma designs, cutting design-to-engineering handoff time and improving UI consistency. Integrated RESTful APIs end-to-end across ~100 modules, defining how the frontend consumes backend services, and handled asynchronous data and state with Redux, Redux-Saga, and React Query. Wrote unit and integration tests with Jest and React Testing Library; enforced code quality through code reviews, ESLint, Prettier, and SonarCloud, with cross-browser compatibility and accessibility standards applied. Partnered with design, product, and backend teams to balance UX quality with technical constraints; reviewed pull requests and onboarded 2 junior developers.