Ahmed Muhammed Elsaid
( Ahmed ElSaid )
Staff Frontend Engineer · Full-Stack (MERN) · Mobile (React Native) — 8+ years turning ambiguous product ideas into production systems that scale. I architect React, Next.js, and React Native applications, design end-to-end MERN platforms, and lead the engineering decisions that compound team velocity over time. My work has shipped to 600K+ active users across enterprise (Dematic UNITE-APP), telecom (Ooredoo / Celfocus), and consumer (QiDZ, Reach) — driving 33% faster TTFB, 92+ Lighthouse scores, 28% higher engagement, 14% fewer support tickets, and 13% shorter deployment cycles. Beyond shipping code, I lead cross-functional teams of 5+ engineers, own delivery from Figma to production, build design systems and micro-frontend platforms, enforce TDD and WCAG accessibility, and mentor engineers toward higher quality and ownership. I bring a product-first mindset, deep technical range across the full stack, and a track record of measurable business impact.
What I Do - React, Next.js, React Native & MERN Stack
Frontend Architecture & Engineering
⚡ Architecture at Scale – Designed micro-frontend (MFE), SPA, PWA, and SSR/SSG/ISR systems powering products for 600K+ active users; led modernization of legacy codebases into modular, scalable React/Next.js architectures.
⚡ Performance Engineering – Reduced TTFB by 33% (2.4s → 1.6s), achieved 92+ Lighthouse scores, and cut load times by 20% through code-splitting, memoization, lazy loading, React-Query caching, and Vite-based tooling.
⚡ Design Systems & Component Libraries – Built reusable component libraries and design primitives (5+ MFE modules) that reduced deployment time by 13% and lifted user engagement by 10%.
Backend & Cloud (MERN + Beyond)
⚡ Built and shipped production APIs and services on the MERN stack (MongoDB, Express, React, Node.js), supporting authenticated multi-tenant frontends.
⚡ Designed REST and GraphQL contracts that simplify client integration, reduce over-fetching, and unblock parallel frontend delivery.
⚡ Modeled relational and document data with PostgreSQL and MongoDB; tuned queries and indexes for low-latency UX.
Architecture, Accessibility & AI Tooling
⚡ Frontend Architecture – Hands-on with PWA, SPA, micro-frontend (MFE), SSR/SSG/ISR, monorepos, and design-system-driven product development.
⚡ Accessibility – Apply WCAG 2.1, ARIA, and a11y heuristics from design review through implementation; validate with automated and manual audits.
⚡ Product & Design Partnership – Translate Figma into pixel-perfect, responsive, themeable UIs; collaborate directly with founders, PMs, and designers.