Waseem Ullah

Senior React.js / Next.js Developer | TypeScript | Frontend Architecture | Performance Optimization | Scalable Web Applications

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RawalpindiMember since August 28, 2026

Next.jsReact.jsNode.jsNestjsMongodbSqlPostgresqlTypescriptFrontend DeveloperNext.js DeveloperReact DeveloperFull Stack Web DeveloperMern Full Stack DeveloperJavascriptApp Development

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About

Senior React.js / Next.js Developer with 5+ years of experience building scalable, high-performance web applications using React.js, Next.js, TypeScript, and modern frontend technologies. Skilled in frontend architecture, reusable component development, state management, API integration, performance optimization, accessibility, automated testing, and AI-assisted development workflows. Experienced in SSR,

SSG, ISR, Core Web Vitals optimization, GraphQL, REST APIs, and CI/CD practices. Strong understanding of Node.js, NestJS, MongoDB, SQL, and PostgreSQL for effective frontend-backend collaboration. Proven track record of delivering responsive, maintainable,

Experience

Frontend React.js / Next.js Developer

Developed scalable enterprise web applications using React.js, Next.js, TypeScript, and modern frontend architecture patterns.
Built reusable component libraries and shared UI systems, reducing development effort by 30% and improving design consistency.
Improved application performance by 30% through code splitting, lazy loading, bundle optimization, and caching strategies.
Implemented SSR, SSG, and ISR in Next.js, improving SEO performance and reducing TTFB by 40%.
Integrated RESTful APIs and GraphQL APIs using RTK Query, Axios, Redux Thunk, and Zustand,

improving data-fetching speed by 25–35%.

Delivered responsive and accessible user interfaces using Tailwind CSS, Material UI, Ant Design, and Styled Components, aligning with WCAG standards.
Built analytics dashboards using Recharts, Chart.js & ApexCharts, increasing data visibility by 35%.
Enhanced code quality through Jest, React Testing Library, code reviews, CI/CD workflows, and Agile development practices.
Leveraged AI-assisted development tools including Cursor AI, Claude Code, OpenAI Codex, ChatGPT, and GitHub Copilot to accelerate development, debugging, and code optimization.