Muhammad Sohail H.

Mobile App Developer | Flutter & AI | iOS, Android & Firebase

Got an app idea, unfinished MVP, or existing app that isn't where it needs to be? Maybe development is taking too long, the code is hard to maintain, or you're dealing with bugs that aren't getting fixed. I help startups, founders, and businesses build, fix, and launch production-ready mobile applications as a Mobile App Developer specializing in Flutter, iOS & Android, Firebase, and AI. Whether you're starting an MVP from scratch, taking over an existing application, or improving an app that's already live, I focus on turning your requirements into a stable, scalable mobile product not just writing code. ━━━━━━━━━━ 𝐖𝐇𝐀𝐓 𝐈 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐁𝐔𝐈𝐋𝐃 ━━━━━━━━━━ ✦ Flutter Mobile App Development for iOS & Android ✦ MVP Development for startups and new products ✦ Custom Mobile App Development for businesses ✦ Existing App Development, Bug Fixing & Feature Development ✦ Firebase Mobile App Development ✦ API Integration & REST API Integration ✦ AI App Development & OpenAI API Integration ✦ User Authentication & Profile Management ✦ Push Notifications & Real-Time Features ✦ Payment & In-App Purchase Integration ✦ Location-Based Apps, GPS & Google Maps Integration ✦ eCommerce & Marketplace Mobile Apps ✦ SaaS & Business Management Applications ✦ Social, Chat & Community Applications ✦ App Testing, QA & Performance Optimization ✦ App Store & Google Play Deployment ━━━━━━━━━━ 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐘 & 𝐏𝐋𝐀𝐓𝐅𝐎𝐑𝐌𝐒 ━━━━━━━━━━ Mobile: Flutter, Dart, iOS, Android Backend: Firebase, Supabase, REST APIs AI: OpenAI API, ChatGPT, AI integrations Integrations: Google Maps, Push Notifications, Payments, Third-Party APIs Design: Figma, UI/UX implementation I can work from Figma designs, product requirements, an existing codebase, or an MVP concept and take the project through development, API integration, testing, bug fixing, optimization, and release. ━━━━━━━━━━ 𝐖𝐇𝐎 𝐈 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 ━━━━━━━━━━ I work best with: → Startup founders building an MVP → Businesses launching a new mobile product → Companies needing an iOS & Android application → Founders taking over an unfinished or poorly developed app → Existing app owners who need bug fixing, optimization, or new features → SaaS and AI startups turning a product idea into a mobile application If you already have an application, I can also work with your existing codebase rather than forcing you to rebuild everything from scratch. ━━━━━━━━━━ 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐂𝐎𝐌𝐄 𝐓𝐎 𝐌𝐄 ━━━━━━━━━━ Many mobile projects don't fail because the idea is bad. They fail because development becomes expensive, the codebase becomes difficult to maintain, bugs keep appearing, integrations don't work reliably, or the application never reaches a stable production release. My approach focuses on clean implementation, reliable integrations, testing, maintainability, performance, and a clear path to launch. You get complete project source code and a mobile application built around your actual product requirements. If you're new to Upwork and have an app idea, MVP, existing codebase, or unfinished application, send me a message with your requirements. If you already know what you need, you can also invite me to your job or use the Hire button to start the project directly. I'll review your requirements, understand what needs to be built or fixed, and we can take it from there.