React Native + Expo developer who takes apps from an empty repo to live on the App Store and Google Play. Five years in, usually the only mobile engineer, shipping AI, health, and marketplace apps and rescuing the ones that crash, lag, or get rejected
Some of what I've shipped:
Fitra360: an AI wellness platform that analyzes DNA, bloodwork, symptoms, and lifestyle data to generate personalized health and routine plans.
FIXA: a car services and AI diagnostics app with camera-based tire scanning and Elasticsearch-powered search, in production.
Gayar: Kuwait's first car parts marketplace. Three years in production with full ad-platform integration (TikTok, Snap, Meta, Google) and deep-linked campaigns.
Other production work spans health insurance telemedicine, Saudi enterprise ERP (POS, inventory, geofenced HR attendance), university apps with campus security systems, and AI-assisted real estate platforms.
The work tends to land in two buckets.
New builds: production React Native + Expo apps from MVP through enterprise scale. AI features like health analysis, in-app assistants, image recognition, and smart recommendations. Healthcare and telemedicine platforms with video consultations, secure data, and prescriptions. Marketplaces and e-commerce apps with deep linking and full event tracking. Enterprise ERP, POS, inventory, and HR systems. Supabase, Firebase, and GraphQL backends (auth, RLS, realtime, edge functions, storage).
Pixel-perfect UI from Figma, REST and GraphQL APIs, push notifications, in-app purchases, geolocation, maps, geofencing, deep linking. App Store and Google Play submissions end-to-end, including rejection appeals.
Rescues: crashes, white screens, broken navigation. Performance issues like slow lists, laggy animations, high memory, slow cold start. Auth and session problems (Supabase, Firebase, OAuth, expo-auth-session). App Store and Play Store rejections. TestFlight build and distribution issues.
Send a quick description, a Loom, or an error log. I'll come back with a clear plan, a realistic timeline, and what it'll actually take.
Expo.io
React Native
AI Mobile App Development
Supabase
TypeScript
Mobile App Development
Android App Development
iOS Development
In-App Purchases
Performance Optimization
Firebase
REST API
GraphQL
JavaScript
Mapbox
Mobile App Bug Fix
Push Notifications
API Integration
Redux
Google Maps
Youssof K.
Cairo, Egypt
$20/hr
5.0
6 jobs
Welcome to my profile ๐
Iโm a Senior Front-End & Cross-Platform Mobile Developer with 4+ years of experience building fast, scalable, and clean applications for Web, iOS, and Android.
In normal human words: you bring the idea, design, broken app, half-built dashboard, โurgentโ startup feature, or mysterious bug from the depths of productionโฆ and I help bring it back to life, preferably without summoning any new bugs along the way.
I specialize in building:
โ React.js / Next.js web applications
โ React Native / Expo mobile apps for iOS & Android
โ Cross-platform apps using Capacitor / Ionic-style architecture
โ Responsive landing pages, dashboards, admin panels, and SaaS products
โ API-driven applications using REST, GraphQL, Webhooks, Firebase, Supabase, and custom backends
โ Performance optimization, bug fixing, refactoring, and production-ready UI implementation
What can I help you with
If you need someone who can take ownership of the front end and actually care about the final product, I can help with:
โ Building modern web apps from scratch
โ Turning Figma designs into clean, responsive, pixel-friendly UI
โ Building mobile apps with React Native, Expo, and EAS
โ Creating Android and iOS apps from one shared codebase
โ Migrating or improving old React / React Native projects
โ Connecting apps to APIs, GraphQL, Firebase, Supabase, MongoDB, PostgreSQL, or Node.js backends
โ Fixing bugs, crashes, layout issues, slow screens, messy state management, and โit works on my machineโ disasters
โ Setting up authentication, forms, dashboards, subscriptions, notifications, deep links, and third-party integrations
โ Preparing mobile apps for TestFlight, App Store, Google Play, and internal testing releases
My main tech stack
Frontend: โ React.js, โ Next.js, โ TypeScript, โ JavaScript ES6+, โ HTML5, โ CSS3, โ Tailwind โ CSS, โ SASS/SCSS
Mobile: โ React Native, โ Expo, โ Expo Router, โ React Native Screens, โ Capacitor
UI Libraries: โ Material UI, โ Chakra UI, โ Ant Design, โ Bootstrap, โ Styled Components, โ ShadCN
State & Forms: โ Redux, โ Redux Toolkit,โ Zustand, โ React Hook Form, โ Formik, โ Zod
APIs & Data: โ REST APIs, โ GraphQL, โ Webhooks, โ React Query, โ Firebase, โ Supabase
Backend familiarity: โ Node.js, โ Express.js, โ Java Spring Boot, โ C# .NET Core
Databases: โ MongoDB, โ Mongoose, โ PostgreSQL, โ Supabase
Tools: โ Git, โ GitHub, โ GitHub Actions / Workflows, โ EAS Build, โ App Store / Play Store deployment workflows
Payments: โ React IAP, โ Revenue Cat, โ Play Store/App Store purchases
Deployments: โ Railway, โ AWS, โ Vercel
Builders: โ Shopify, โ Wordpress , โ Squarespace, โ Wix
AI Workspaces: โ Lovable, โ BuilderIO, โ Replit
Why work with me?
Because I donโt just โmake the screen look like the designโ and disappear into the fog.
I care about:
โ Clean, maintainable code
โ Smooth user experience
โ Mobile-first responsive layouts
โ App performance
โ Real device testing
โ Clear communication
โ Shipping the thing, not just talking about shipping the thing
Iโve worked across startups, internal tools, delivery apps, mobile apps, dashboards, and production systems where โwe need this yesterdayโ was basically the company slogan. So Iโm comfortable working fast, solving real problems, and keeping things practical.
Whether you need a full app built, a front-end partner, mobile development help, a bug hunter, or just someone technical to look at your project and say โokay, hereโs whatโs actually going on,โ Iโd be happy to help.
Send me a message, and letโs bring your project to life, ideally with fewer bugs than before.๐
Expo.io
Front-End Development
React
Web Development
JavaScript
Bootstrap
TypeScript
API Integration
REST API
GraphQL
App Development
Mobile App Development
React Native
iOS Development
Android App Development
Firebase
SaaS Development
API Development
OpenAI API
MERN Stack
Mohamed S.
Zagazig, Egypt
$15/hr
4.7
19 jobs
Build fast, modern, and scalable web & mobile applications.
Whether you need an MVP, a production-ready application, or new features for an existing product, I can help bring your ideas to life with clean code, responsive interfaces, and an excellent user experience.
As a Frontend Developer, I specialize in building high-quality applications with React, React Native, Next.js, Expo, and TypeScript. I've delivered production software for startups and businesses across FinTech, Healthcare, Logistics, Retail, Hospitality, Education, and SaaS.
๐ผ What I can help you with
โ React & Next.js Web Applications
โ React Native & Expo Mobile Apps (iOS & Android)
โ Responsive & Pixel-Perfect UI Development
โ API Integration (REST & GraphQL)
โ State Management (Redux Toolkit, Zustand, TanStack Query)
โ Authentication & Firebase
โ Stripe & Plaid Integrations
โ Push Notifications & In-App Purchases
โ Maps, BLE, NFC & QR Features
โ Interactive UI & Dashboard Development
๐ Technologies
โข React
โข React Native
โข Next.js
โข Expo
โข TypeScript
โข Tailwind CSS / NativeWind
โข Redux Toolkit
โข Zustand
โข TanStack Query
โข Firebase
โข Fabric.js
โข REST & GraphQL APIs
โญ My workflow
I believe great frontend development is more than writing code.
โ Clean, maintainable architecture
โ Reusable components
โ Performance optimization
โ Automated testing
โ CI/CD & OTA deployments
โ Clear communication throughout the project
If you're looking for a developer who takes ownership, communicates clearly, and delivers polished web and mobile applications, I'd love to hear about your project.
Feel free to check out my portfolio below, and let's build something great together.
Sass
Responsive Design
CSS
JavaScript
jQuery
Blockchain
React Native
React
Redux
Three.js
iOS
Android
Marwan H.
Alexandria, Egypt
$40/hr
5.0
9 jobs
Iโm a full-stack developer who works comfortably across frontend and backend, with a slight bias toward backend fundamentals because thatโs where systems tend to break first. I build software with the assumption that it will be used, extended, and stressed over time, not just shipped and forgotten.
On the backend, I design and implement API-driven systems using Node.js and Express, backed by PostgreSQL. Iโm used to working with transactional workflows, ACID guarantees, and concurrent access patterns, and I treat the database as a core part of the systemโs behavior rather than a passive store. Iโve built multi-tenant systems where isolation is enforced structurally using Row-Level Security, and where authorization, permissions, and data boundaries are explicit rather than implicit. Schema design, indexing, query plans, and access patterns are things I actively think about, especially as systems grow and usage becomes less predictable.
I work with APIs as real system contracts. I care about request lifecycles, idempotency, pagination, filtering, and how authorization and caching interact with each other. Iโve used caching where it makes sense, and Iโm careful about cache invalidation, scope, and correctness in systems with shared data and role-based access. Iโm comfortable introducing background processing, queues, or additional infrastructure when the problem actually demands it, not as a default move.
From a runtime and infrastructure perspective, I regularly work with Docker and containerized setups to keep environments consistent across development and production. Iโm comfortable working behind Nginx reverse proxies, handling routing, headers, and request flow, and thinking about how applications are exposed and operated. I care about how services start, how they fail, and how easy they are to debug once theyโre running.
On the frontend, I work primarily with React and approach it with the same system-level mindset. I care about state ownership, server-client synchronization, and keeping frontend state aligned with backend truth. Iโm used to building dashboards, admin panels, and workflow-heavy interfaces where permissions, conditional rendering, and data consistency matter. I think about data fetching strategies, caching on the client, and how frontend architecture either amplifies or reduces backend complexity.
I see frontend and backend as two sides of the same system. I design APIs with frontend usage in mind, and I design frontend components with backend constraints in mind. When that boundary is clean, teams move faster and systems stay understandable. When it isnโt, complexity leaks everywhere.
Most of the systems I work on fall into categories like project management tools, internal platforms, operational dashboards, and early-stage SaaS products. These are systems with multiple users, roles, shared resources, and evolving business rules. Iโm comfortable stepping into existing codebases, reading through decisions that were made under pressure, and improving structure without rewriting everything from scratch.
I use Git daily and care about clean version control, readable history, and collaboration workflows that scale with teams. I donโt chase trends, but I stay close to the tools and patterns that show up repeatedly in real production systems. I value clarity, explicit boundaries, and software that remains debuggable months after itโs deployed.
If youโre building a full-stack application where both frontend and backend matter, and you want someone who can move across that boundary without hand-offs or guesswork, feel free to reach out. Iโm happy to talk through your system, your constraints, and what would actually move the project forward.
Expo.io
Next.js
Front-End Development
Tailwind CSS
React
Node.js
Web Development
React Native
Figma
ExpressJS
TypeScript
SQL
PostgreSQL
Supabase
Mohamed S.
Cairo, Egypt
$23/hr
5.0
13 jobs
๐ข Available Now
Whatever projects we collaborate on, I'll go above and beyond to make them a reality. I'll report daily and setup continuous deployments (CI/CD), so that you can see your projects coming to life in real time. You'll work with me, and me alone.
I prefer to send short, 5-minute looms sharing the progress everyday. I love over-communication, so I might annoy you a little, but the clarity it brings is always worth the wait.
If you're ready, I can deliver your project in just a couple of days. Not sure where to start? Iโll guide you through the process and design a plan.
Missing anything? No worriesโIโve got industry contacts who can help. As an experienced engineer, Iโm here to make your project a success.
๐๐ข! ๐โ๐ฆ Mohamed ๐
๐ ๐๐ซ๐จ๐๐๐ฌ๐ฌ๐ข๐จ๐ง๐๐ฅ ๐ ๐ฎ๐ฅ๐ฅ ๐๐ญ๐๐๐ค ๐๐๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ ๐ฐ๐ข๐ญ๐ก 2+ ๐ฒ๐๐๐ซ๐ฌ ๐จ๐ ๐๐ฑ๐ฉ๐๐ซ๐ข๐๐ง๐๐ ๐ฆ๐๐ฌ๐ญ๐๐ซ๐ข๐ง๐ :โจ
๐น ๐๐ฟ๐ผ๐ป๐๐ฒ๐ป๐ฑ: React, Next.jsโจ
๐น ๐๐ฎ๐ฐ๐ธ๐ฒ๐ป๐ฑ: Node.js, Express.js, Postgres, MongoDB
๐น ๐ข๐ฝ๐ฒ๐ป๐๐ integration and Node.js for intelligent backend solutions
My services cover:
โ Full Website Development
โ Website development
โ Website hosting/deployment
โ CMS, API, Internationalization
Welcome to contact me for any web development related tasks. I cannot wait to hear from you.
Expo.io
CSS
HTML
JavaScript
Landing Page
SCSS
Node.js
React
ExpressJS
PostgreSQL
TypeScript
Git
Tailwind CSS
Next.js
Vercel
Mobile App
React Native
Full-Stack Development
Supabase
OpenAI Codex
Ahmed Y.
Cairo, Egypt
$25/hr
4.9
157 jobs
Hey,
I am a UI/UX Designer and a Front-end developer, I am working in Branding, User Interface, User experience, Web design, Mobile Apps, Front-end development, and WordPress development.
-Website from scratch "Branding, User experience, user interface, Next JS, Angular, React"
- Dashboard using Strapi, Firebase
-Create a Mobile app design "Branding, User experience, User interface, Prototype, Development"
-Mobile Apps: Ionic, React Native, Expo
-Website SEO, Mobile App ASO
-Photoshop, Illustrator, Adobe XD, Invision, Zeplin, ProtoPie, HTML5, CSS3, Bootstrap4, Angular, Ionic, Flutter, React JS, React Native, Next.JS, Figma.
Let me know how I can improve your business.
Check my portfolio at ahmedyoussif.dribbble.com and ask me for more examples
Feel free to contact me
User Interface Design
Web Design
Interaction Design
Mobile UI Design
Adobe XD
User Experience Design
Firebase
CSS 3
HTML5
WordPress
Shopify
Bootstrap
React
Tailwind CSS
React Native
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