Open to opportunities

Muhammad Mahdi

@mehdi514

Message

Senior React & React Native Developer | Fintech, SaaS & Enterprise | 6+ Years Remote

Pakistan

Message

What I'm looking for

I’m looking for a remote-friendly role where I can own React/Next.js and cross-platform Expo architecture end-to-end, mentor developers, and ship measurable improvements—performance, accessibility, and safe releases with CI/CD and feature flags.

I’m a Senior React Developer with 6+ years building high-performance web and cross-platform mobile apps for clients across the US, EU, and Pakistan. I’m known for owning a codebase end-to-end—from architecture decisions to App Store / Play Store submissions—while shipping products that move business metrics.

Recently at Tenen Payments Ltd., I architected an Expo cross-platform app from a single TypeScript codebase, built a shared Storybook component library with design tokens, and integrated payment APIs with real-time WebSocket pipelines under PCI-DSS constraints using strict mode and feature flags. Previously, I cut page load times and improved Core Web Vitals at Wavenest, led an enterprise Next.js UI/UX overhaul with WCAG 2.1 AA compliance at Empower Associates, and migrated legacy sites to React/Next.js while delivering accessible, mobile-first UI. I bring a mentoring mindset, micro-frontend/feature-flag practices, and strong testing and code review habits to help teams deliver reliably and fast.

Experience

Work history, roles, and key accomplishments

Current

Senior React Developer

Current

Tenen Payments Ltd.

Sep 2025 - Present (9 months)

Architected a cross-platform Expo app (Android/iOS/Web) from a single TypeScript codebase, replacing multiple native builds and significantly reducing maintenance overhead. Built a shared Storybook component library with design tokens across React Native and Next.js, integrated payment APIs and real-time WebSockets under PCI-DSS constraints, and set up EAS Build pipelines to automate OTA updates a

React Native Expo TypeScript Storybook WebSockets PCI DSS CI CD EAS Builds

Senior React Developer

Wavenest

Apr 2023 - Aug 2025 (2 years 4 months)

Improved page load times by 40% and achieved passing Core Web Vitals (LCP, CLS, FID) through Vite code-splitting and lazy loading. Built and maintained a 30+ component Storybook design system with full TypeScript typings, cutting feature delivery time by 60% and reducing developer ramp-up from days to hours.

React TypeScript Vite Lazy Loading Storybook Jest Sentry

Senior React Developer

Empower Associates

Jun 2023 - Sep 2024 (1 year 3 months)

Led a full UI/UX overhaul of an enterprise Next.js app, increasing user engagement by 50% and session duration by 35%. Implemented a WCAG 2.1 AA-compliant mobile-first design system, improved uptime to 99.5% by resolving 100+ production bugs with Sentry, and migrated a 50K+ line codebase to TypeScript strict mode.

Next.js React TypeScript WCAG 2.1 AA Sentry Performance Optimization Accessibility Compliance

React Developer

Dtech Systems

Jun 2022 - Apr 2023 (10 months)

Built React components for 5+ e-commerce platforms handling 10,000+ daily transactions with sub-second response times. Shipped UI improvements in Agile sprints that increased checkout conversion rates by 25%, and reduced QA regression cycles by 40% with Jest and React Testing Library.

React TypeScript Jest React Testing Library Agile Scrum Performance Optimization Accessibility Best Practices Mentoring

Frontend Developer

DevDuo Inc.

Sep 2020 - Nov 2022 (2 years 2 months)

Built 10+ Shopify storefronts with React theming and GraphQL Storefront API, generating $500K+ in client revenue. Continued delivering WCAG 2.1 AA-compliant, mobile-first UIs and maintaining code ownership across multiple active client projects after transitioning to part-time.

React Shopify Storefront API React Theming WCAG 2.1 AA Lighthouse Accessibility CSS Grid Performance Optimization SPA Development

React Native Developer

Granjur Technologies

Sep 2020 - Apr 2022 (1 year 7 months)

Designed and shipped 3 React Native apps from scoping through App Store and Play Store releases with zero rejected builds. Integrated Firebase Auth, Realtime Database, Cloud Messaging, and WebSockets to support 5,000+ active users with 99.9% uptime, and owned the full release lifecycle including Jest unit tests, TestFlight beta, staged rollouts, and production submissions.

React Native Firebase Realtime Database WebSockets Push Notifications TestFlight

Frontend Developer

DevDuo Inc.

Mar 2019 - Aug 2020 (1 year 5 months)

Migrated 20+ legacy jQuery sites to React/Next.js SPAs, improving average Lighthouse scores by 45%. Delivered WCAG 2.1 AA-compliant, mobile-first UIs using TailwindCSS and CSS Grid across 20+ client projects, consistently scoring 90+ on Lighthouse accessibility.