Fahim Khan

Senior Fullstack Developer

Remote 6+ yrs exp 90 · Outstanding

About

Senior Fullstack Developer with 5+ years of experience architecting and shipping high-performance, production-grade web applications, spanning complex React/Next.js frontends, Node.js/Express backend APIs, and real-time data pipelines. Proven track record delivering measurable results: 70% reduction in page load times, 40% cut in CI/CD release effort, 30% faster feature delivery, and 90%+ test coverage on critical application paths. Expert in building data-heavy, real-time dashboards integrating GraphQL, WebSocket, and REST APIs with complex state management (Redux Toolkit, React Query, Zustand). Experienced leading cross-functional engineering teams, mentoring developers, enforcing code quality standards (ESLint, Prettier, TypeScript strict mode), and owning end-to-end delivery from system architecture and Figma design to production deployment. Adept at building scalable microservice backends with Express.js, PostgreSQL, MongoDB, Redis, and Docker, and integrating third-party APIs, OAuth authentication flows, and CI/CD pipelines across AWS, Vercel, and GCP environments. Capable & experience integrating LLM APIs (OpenAI, Claude), and shipping AI features using React streaming UIs.

Skills & Expertise (65)

JavaScript Advanced

9.0/10

Years Exp

React.js Advanced

9.0/10

Years Exp

Git Advanced

9.0/10

Years Exp

Node.js Advanced

9.0/10

Years Exp

Next.js Advanced

8.5/10

Years Exp

REST API design Advanced

8.5/10

Years Exp

GraphQL Advanced

8.0/10

Years Exp

Docker Advanced

8.0/10

Years Exp

MongoDb Advanced

8.0/10

Years Exp

Postgresql Advanced

8.0/10

Years Exp

Typescript Advanced

8.0/10

Years Exp

Figma D3.js OpenAI API Jest React Testing Library ESLint Prettier Husky lint-staged GitHub Actions GitLab CI Vercel Netlify Notion Python Yarn Responsive Design WCAG Accessibility Rust NPM Vite.js Webpack Postman Chrome DevTools VS Code Jira Server-Sent Events HTML5 CSS3 SCSS Tailwind CSS bootstrap MUI Redux Toolkit Zustand React Query React Context API NextAuth.js Express.js WebSocket Chart.js Redis Firebase Firestore OAuth 2.0 JWT Session management Role-based access control lazy loading code splitting Tree Shaking Memoization Web Vitals Lighthouse

Work Experience

Senior Fullstack Developer

FewerClicks Labs

Aug 2025 - Present

Product studio building Funnel.Markets, a high-performance perpetual trading exchange with advanced liquidity mechanics, real-time charting, cross-chain bridge UIs, and a Node.js/GraphQL backend data layer.

Senior Fullstack Developer

Ancilar

Jan 2023 - Aug 2025

Engineering consultancy delivering fullstack systems for high-traffic financial platforms, real-time analytics dashboards, AI-integrated products, and multi-chain portfolio management tools, end-to-end ownership across every engagement.

Fullstack Developer

Independent Contractor

Jun 2020 - Dec 2022

Delivered fullstack web applications for DeFi startups, fintech products, and trading platforms, owning frontend architecture, Node.js backend APIs, database design, and deployment pipelines end-to-end.