Himanshu Sojitra

Optimized Next.js frontend performance by implementing image preloading and eager loading (priority property) on critical hero elements, reducing Largest Contentful Paint (LCP) by 40% (from 4.0s to 1.8s) to meet Core Web Vitals standards. Led a team of 3 engineers to develop the front-end of a high-traffic retail e-commerce platform using React, Next.js (App Router), TypeScript, Redux Toolkit, Tailwind CSS, and ContentStack (Headless CMS) across a Micro Frontend architecture, while establishing a robust testing suite with Vitest. Accelerated frontend feature delivery by adopting an AI-assisted, Spec-Driven Development (SDD) workflow using Claude Code and the Figma Model Context Protocol (MCP) to translate UI specifications directly into production code.

Engineered a collaborative ad configuration tool supporting real-time multi-user editing; utilized React, TypeScript, and TanStack Query alongside WebSockets for live data synchronization; designed a highly responsive interface using Material UI. Optimized front-end rendering performance by troubleshooting a critical, user-reported screen-freezing issue; leveraged React useMemo to eliminate repetitive JSON.parse operations on heavy payloads, reducing Interaction to Next Paint (INP) latency by 42%.

Achieved WCAG Level AA compliance by resolving color contrast issues, adding ARIA attributes, and restoring full keyboard navigation coverage, directly contributing to improved accessibility and expanded enterprise customer adoption. Reduced end-to-end test suite runtime by 35% by leading the migration of 120+ desktop tests from the deprecated Spectron framework to Playwright, improving CI/CD pipeline reliability for the team. Engineered an enterprise-grade email client using Preact (lightweight React) for fast rendering; managed complex workspace state with React Redux, optimized data fetching with Apollo Client, and built responsive styling with LESS CSS.

Led a team of 3 engineers to architect a subscription renewal platform using React.js and TypeScript; owned and maintained a Storybook UI component library powered by Styled Components (CSS-in-JS), accelerating feature delivery by 18%. Mentored a team of 5 frontend engineers and spearheaded code quality initiatives by reviewing 60% of all pull requests (PRs) per sprint; designed and implemented a standardized PR checklist that eliminated repetitive comments and accelerated code merge velocity by 30%. Boosted overall code coverage by 10% across critical application paths by authoring and refactoring 15+ comprehensive unit tests using Jest and React Testing Library, significantly strengthening regression detection. Built a responsive, mobile-first UDI barcode scanning application for a global healthcare enterprise, leveraging ReactJS, Hooks, and Context API for scalable state management alongside SCSS to ensure modular, collision-free styling.

Spearheaded the development of responsive Single Page Applications (SPAs) by architecting fluid layouts with Bootstrap and implementing AngularJS, utilizing Restangular to streamline robust RESTful API integration and optimize client-side data rendering.

Engineered and optimized user interfaces using JavaScript, HTML, CSS, jQuery, and AJAX to implement robust asynchronous data-fetching layers and interactive DOM components, improving cross-browser compatibility and user engagement.