Shahzaib M.

I’m a Senior iOS & Full-Stack Developer with 10+ years of experience building high-quality iOS apps, React Native mobile apps, React/TypeScript web applications, and SaaS platforms. I specialise in Swift, SwiftUI, Objective-C, React Native, React, TypeScript, JavaScript, Firebase, REST APIs, and backend integrations. I have developed 40+ applications across Travel, Utility, Business, Finance, E-commerce, Automotive, and SaaS. Whether you need a new mobile app, React Native application, React/TypeScript website, SaaS platform, API integration, or improvements to an existing product, I can help take it from concept to production. 📱 iOS Development • Swift & SwiftUI • Objective-C & UIKit • MVVM, MVC, MVP & Clean Swift • Combine & RxSwift • Core Data & SQLite • Firebase & Firestore • StoreKit & In-App Purchases • Push Notifications • WebSockets & Sockets • Unit Testing • CI/CD & Fastlane • Performance optimisation • App Store deployment ⚛️ React Native & Cross-Platform Development • React Native • TypeScript • JavaScript • iOS & Android applications • Native module integration • REST API integration • Firebase integration • Authentication • Push Notifications • Payments & In-App Purchases • Performance optimisation • App Store & Google Play deployment 🌐 React, TypeScript & Web Development I also have hands-on experience developing modern web applications and SaaS platforms using React and TypeScript. My web development experience includes: • React & TypeScript • JavaScript • Responsive web applications • REST API integration • Firebase & Firestore • Authentication & user management • Admin dashboards • Payment integration • Third-party API integration • SaaS platforms • SEO-focused web development • Mobile + web product integration 🚗 Real-World SaaS & Web Experience — CarVerified One of my recent projects is CarVerified, a UK automotive technology platform combining web applications, iOS/Android apps, APIs, payments, vehicle data, databases, and SaaS functionality. My experience includes developing and enhancing: • React/TypeScript web applications • Customer-facing vehicle check functionality • Vehicle history and report systems • MOT and DVLA data integrations • REST API integrations • Firebase Authentication and Firestore • Payment functionality • Vehicle data processing • User accounts and dashboards • SEO-focused website functionality • Mobile app and web platform integration • Foundations for dealer and garage SaaS functionality This gives me practical experience working across the complete product ecosystem — mobile apps + web applications + APIs + databases + payments + third-party services. 🔌 API & Backend Integration Experienced with: • REST APIs • JSON • SOAP • PHP • CodeIgniter • Firebase Authentication • Firestore • Firebase Storage • WebSockets • Sockets • Third-party APIs • Payment APIs 🧠 Architecture & Engineering Strong knowledge of: • Object-Oriented Programming • Protocol-Oriented Programming • Functional & Reactive Programming • Reactive Programming • SOLID principles • Design Patterns • MVVM / MVC / MVP • Clean Swift • Unit Testing • Agile / Scrum • CI/CD 🛠 Tools & Collaboration Git • GitHub • GitLab • Bitbucket • SVN • Xcode • Fastlane • Firebase • JIRA • Scrum ⭐ Why Work With Me? ✅ 10+ Years of Professional Development Experience Extensive experience building and maintaining production mobile and web applications. ✅ 40+ Applications Developed Experience across multiple industries, technologies, and product stages. ✅ Mobile + Web Expertise I can work across native iOS, React Native, React, TypeScript, APIs, Firebase and SaaS platforms, making it easier to build and maintain a complete product. ✅ Top Rated on Upwork 100% Job Success Rate with a proven track record of successful projects. ✅ $25,000+ Billed on Upwork 1,200+ hours worked with clients on Upwork. ✅ Startup & Product Experience Experience helping startups turn ideas into scalable, production-ready applications. ✅ Professional Communication Clear communication, regular updates, reliable delivery and a strong focus on understanding the business requirements behind the technology. 🚀 Let's Build Your Product Whether you need a: iOS App | SwiftUI App | React Native App | React Web Application | TypeScript Developer | SaaS Platform | API Integration | Firebase Development | Mobile + Web Product I can help you design, develop, test, deploy and continuously improve your product. Send me a message with your requirements, and let's discuss how I can help.