Shubham N.

Need an experienced iOS developer to build a new app or improve an existing one? I develop iOS applications using Swift, SwiftUI, and UIKit, with 12+ years of experience and $200K+ earned on Upwork. I can help with new features, bug fixes, UIKit-to-SwiftUI modernization, and App Store releases. My portfolio includes health apps, taxi and carpooling apps, and iPad POS systems. With 12+ years of hands-on iOS experience, I specialize in Swift, SwiftUI, and UIKit, with a strong focus on scalable architecture, performance, stability, complex integrations, and long-term maintainability. 🏆 Top Rated Plus | 100% Job Success | 50+ Projects | 6,700+ Upwork Hours 🚀 12+ Years of iOS & Mobile Development Experience 🏢 Production systems supporting 150+ business locations I help founders and businesses build new iOS products, take MVPs to production, modernize existing applications, and solve complex technical problems in live apps. What I Can Help With ✅ iOS Development — Swift, SwiftUI, UIKit, Objective-C ✅ App Architecture — MVVM, MVC, Clean Architecture, scalable codebases ✅ New & Existing Apps — Development, modernization, refactoring and feature development ✅ Bug Fixing — Crashes, memory issues, production bugs and technical debt ✅ Performance — UI, startup time, memory, networking and battery optimization ✅ APIs & Backend — REST, GraphQL, Firebase, Node.js ✅ Authentication — Apple Sign In, Google Sign-In, OAuth, JWT ✅ Payments — StoreKit, In-App Purchases, Apple Pay, Stripe, RevenueCat ✅ Maps & Location — MapKit, Core Location, Google Maps, GPS ✅ Notifications — APNs, Firebase Cloud Messaging, background tasks ✅ Real-Time — Chat, messaging, WebSockets, Firebase ✅ AI — OpenAI, ChatGPT features, AI APIs and LLM integrations ✅ Analytics — Firebase Analytics, Crashlytics, Mixpanel ✅ App Store — TestFlight, App Store Connect, submission and production releases Advanced iOS Experience I work on the areas that often require senior-level engineering rather than basic feature development: complex application architecture, legacy code modernization, concurrency, asynchronous workflows, offline-first functionality, data synchronization, deep linking, background execution, memory management, performance optimization, third-party SDK integration, subscription systems, and production debugging. I can also take ownership of an existing codebase, understand the current architecture, identify technical risks, and create a practical path toward a more stable and maintainable application. Apps I Have Built iOS Apps, SaaS Applications, E-Learning, EdTech, Food Delivery, Grocery, FinTech, Health & Fitness, Wellness, Social Media, Chat & Messaging, E-commerce, Marketplace, Real Estate, On-Demand, Subscription-Based, Location-Based, AI-Powered and Business Applications. Tech Stack & Tools iOS: Swift, SwiftUI, UIKit, Objective-C, Core Data, SQLite, StoreKit, MapKit, Core Location Backend & APIs: REST, GraphQL, Firebase, Node.js, WebSockets Payments: Apple Pay, StoreKit, In-App Purchases, RevenueCat, Stripe Authentication: Apple Sign In, Google Sign-In, OAuth, JWT, Keychain AI: OpenAI, ChatGPT, AI API Integration, LLM Integration Tools: Xcode, Git, GitHub, TestFlight, App Store Connect, CI/CD Production Experience I've helped build and maintain production systems where reliability and scalability directly impact the business. One example is Red Swan Pizza, a Canada-based pizza chain with a production system operating across 150+ stores. Why Work With Me ✔ 12+ years of professional iOS experience ✔ Top Rated Plus with 100% Job Success ✔ 50+ completed projects and 6,000+ Upwork hours ✔ Strong Swift, SwiftUI and UIKit expertise ✔ Senior ownership of architecture and technical decisions ✔ Experience with complex production applications ✔ Direct communication and personal involvement ✔ Focus on clean, maintainable and scalable code ✔ Experience taking products from development to App Store launch Larger Projects & Team Capability For larger projects, I have an in-house team of 25+ experienced developers across iOS, Android, Flutter, React Native, Web, QA and DevOps. You get a single point of contact through me. I personally oversee the technical direction, development, quality and delivery while the team provides additional execution capacity when required. Whether you need a senior Swift developer, a SwiftUI specialist, help rescuing an existing iOS application, or someone who can take complete ownership of your mobile product, I can help. Let's discuss your project, existing codebase, or product idea and find the right technical approach.