Hello and welcome! I'm Petro, an iOS developer specializing in SwiftUI for iOS development, Google Cloud Services, and integrating diverse APIs and cloud services. My expertise combines front-end proficiency in SwiftUI with strong back-end skills in GCP Services like Firebase SDK, Cloud Functions, Cloud Run, etc. This integration of technologies empowers me to deliver exceptional front-end and back-end solutions. Primary Focus: - Mobile Development Technologies: iOS, SwiftUI, UIKit - Backend Development: Emphasis on Google Cloud Platform and Golang Current Specializations: - Frameworks: SwiftUI - Firebase Services: Firestore, Messaging, Functions, Authentication, Analytics, etc. - Google Cloud Services: Cloud Functions, Pub/Sub, Cloud Run, Compute Engine, etc. - Containerization: Utilizing Docker in GCP My deep passion for both Apple and Google Cloud technologies is reflected in my comprehensive work with SwiftUI and Firebase for iOS development, and the Google Cloud Platform for backend solutions. Utilizing Swift and Golang, I strive to create complete, fully-integrated mobile and backend applications. This dedication drives me to deliver high-quality, efficient solutions for both mobile and software applications. Primary Languages and Technologies: - Languages: Swift, Golang - Technologies: SwiftUI, Firebase, Google Cloud Platform (GCP) - Additional Skills: SwiftData, UIKit, Git, MVC, MVVM, JSON, CocoaPods, CoreData, CloudKit, AWS, Push Notifications, WebSockets, REST API, HTTP, Data Structures, OOP, ChatGPT Supportive Skills: - Programming: JavaScript, HTML/CSS - Technologies: Docker, MySQL, PostgreSQL, SQLite, WebSocket server/client, Go/Gorilla, Go/Gin I am open to discussions regarding any type of collaboration. Please feel free to contact me exclusively through UpWork. Looking forward to working with you! [Date Update: December 20, 2023] - As an actively engaged software developer, my involvement here is ongoing. If you don't see recent completed jobs, it simply means I'm busy with projects, possibly elsewhere. Rest assured, I am a committed and currently working software developer. Thanks for your interest! Looking forward to potential collaborations.

I help startups and businesses build production-ready mobile applications using Swift, SwiftUI, UIKit, Kotlin, and Flutter. Whether you need a brand-new product or help rescuing an existing app, I focus on delivering scalable, maintainable software that ships successfully. With 10+ years of hands-on mobile development experience, I've contributed to 15+ production applications, taking products from concept to App Store and Google Play release. My experience includes architecture, API integration, Firebase, payments, subscriptions, AI integrations, performance optimization, and App Store deployment. Selected Projects Walee Built the iOS application from scratch, working directly with the founders on architecture, feature planning, and product strategy before launching successfully on the App Store. Smiles UAE Core iOS contributor to one of the UAE's leading lifestyle platforms featuring food delivery, grocery shopping, rewards, payments, and real-time ordering across 10,000+ restaurants and 500+ stores. GifMaker X Built a complete media editing application supporting GIF creation, video editing, filters, stickers, text overlays, and social sharing. Additional production work includes IQProspects (Banking CRM), Carefer, Hungry Mart, Hungry Mart Staff, and other commercial applications. I also help clients with Production bug fixing App Store rejection resolution Performance optimization Firebase integration API integration Payment & subscription issues Feature development TestFlight & App Store releases Technologies Swift • SwiftUI • UIKit • Objective-C • Kotlin • Flutter • Firebase • REST APIs • StoreKit • Core Data • AVFoundation • Vision • MVVM • Clean Architecture • Git • TestFlight • App Store Connect What you can expect Clear communication and regular progress updates Clean, maintainable architecture built for long-term growth Reliable delivery and thorough testing before every release A collaborative approach with designers, product managers, and backend teams If you're looking for a developer who can take ownership, communicate clearly, and deliver production-ready mobile apps without constant hand-holding, let's connect. Whether you're building a new product, scaling an existing app, or need to solve a critical issue quickly, I'd be happy to discuss your project and suggest the best technical approach before you commit.

🌟 With over 7️⃣ years of iOS development experience, I specialize in crafting custom user interfaces with a keen eye for detail and a robust understanding of SOLID principles. 💡 Key Skills: 
📱 App Development Experience: • Deep understanding of the iOS development lifecycle, from concept to deployment 🚀 • Versatile in creating apps ranging from immersive games 🎮 to robust enterprise solutions 💼 🎨 User Interface Design: • Commitment to intuitive and aesthetically pleasing UI 🖌️ • Expertise in SwiftUI/UIKit and modern interface tools. 🛠️ Development Tools Proficiency: • Highly skilled in Xcode and essential iOS development tools 🗜️ • Experienced in Git and other version control systems for collaborative workflows 👥 🌐 Networking and Database Handling: • Skilled in API integration and server communication 📡 • Proficient with on-device database management and interaction with remote databases 🗃️ 🔍 Testing and Debugging: • Aptitude for thorough code testing, including unit and UI tests ⚙️ • Seasoned in debugging processes to ensure app precision and stability 🛡️ 🚀 Learning and Self-Development: • Passion for continuous learning and staying at the forefront of iOS technology 📚 • Adaptive to industry shifts and app market trends 📈 
🛠️ Technologies: 🏗️ Architectures: • MVC • MVVM • MVP 
 📱 iOS Frameworks: • SwiftUI UIKit / Foundation • MapKit 🗺️ • CoreLocation 📍 • AVFoundation 🎵 • Notification Center 🛎️ • Contacts 👥 • Keychain 🔑 • WebKit 🌐 • ARKit
 🖼️ UI: • SwiftUI • Layout in code • Size classes • Storyboards / XIBs
 🔄 Reactive Paradigm: • Combine • ReactiveSwift/ReactiveCocoa • RxSwift/RxCocoa
 💾 Databases: • Realm • CoreData
 🌎 Networking: • Alamofire • REST API • Moya • Kingfisger
 🚀 SDKs: • Firebase 🔥 • OpenCV 🔍 • Google Maps SDK 🗺️ • Facebook / Twitter / LinkedIn / Google SDKs 👤 • Crashlytics 🔐

👋 My name is Yuri — I'm Upwork's #1 iOS developer in Ukraine. I'm the founder and lead engineer at Helicon, an award-winning mobile development team. Together, we bring decades of experience in building software with a mission of delivering exceptional results at an impressive pace. Are you looking to create an app and need an expert developer who speaks fluent English? I specialize in: — iOS development (UIKit, SwiftUI) — macOS development (Cocoa, SwiftUI) — Vision Pro, Apple Watch, and Apple TV apps — Product management & expert advice for software projects. At Helicon, we are skilled in most of the well-known Swift frameworks as well as third-parties. See the full list below: — UI Frameworks: SwiftUI, UIKit, Combine, RxSwift, The Composable Architecture (TCA) — Backend & Auth SDKs: Firebase, AWS Amplify, Supabase Swift, Auth0, Appwrite — 3D Frameworks: RealityKit, ARKit, SceneKit, Model I/O, Quick Look — Networking Libraries: URLSession, Alamofire, Moya, Apollo iOS, gRPC — Image & Animation Libraries: Kingfisher, SDWebImage, Nuke, Lottie, AVFoundation — Data Persistence Libraries: SwiftData, Core Data, Realm, GRDB, KeychainAccess — Analytics & Monitoring Tools: Firebase Analytics, Mixpanel, Amplitude, Sentry, Branch — Payments & Subscription SDKs: StoreKit, RevenueCat, Adapty, Stripe, Paddle — Developer Tools & Dependency Managers: Swift Package Manager, CocoaPods, Carthage, SwiftLint, SnapKit — Device & Platform Frameworks: CoreLocation, MapKit, HealthKit, CoreBluetooth, WidgetKit I can also assist you with app distribution, marketing, and launch using: — App Store Connect — Apple Developer Platform — Apple Search Ads — Meta Ads Manager (f.k.a. Facebook Ads Manager) My team has first-hand expertise in applying AI models like Claude Opus and GPT-5 to the mobile development workflow, allowing us to offer a great turnaround time for your project without ever sacrificing the human touch. Advanced English proficiency is a requirement for every developer working at Helicon. We also communicate freely, Ukrainian, Polish, and Russian. Don’t hesitate to send me a quick message and we will go over your idea in detail over a video call or through Upwork chat!

Senior full‑stack iOS engineer (Swift/SwiftUI/UIKit) who can ship the mobile app + the backend end‑to‑end (Node.js + TypeScript). If you have an existing app that needs to scale, stabilize, or move faster, I can step in, quickly get context, and start delivering. What I do best • iOS/iPadOS/macOS development in Swift (SwiftUI + UIKit) • API design + implementation (Node.js/TypeScript), Firebase, REST/GraphQL integrations • Architecture & codebase health: MVVM, DI, modularization, testing • Performance & reliability: profiling, crash fixes, memory leaks, smooth UI • Legacy modernization: UIKit → SwiftUI, Objective‑C → Swift Typical engagements 1) Audit (3–5 days, fixed price): quick assessment + prioritized plan + first fixes 2) Stabilization/feature sprint (1–2 weeks, fixed): ship milestones, unblock releases 3) Ongoing retainer (monthly): predictable delivery cadence + support Recent outcomes ✓ Built apps with 100k+ monthly active users ✓ Helped startups gain early adopters via MVP + TestFlight ✓ Modernized legacy codebases and improved performance/stability If you share your repo/API constraints and your top 1–2 goals for the next 2 weeks, I’ll propose a tight plan with milestones.

I’m a self-taught SwiftUI developer with 3 years of experience building modern, interactive iOS apps. I focus on clean UI, smooth animations, and custom components built fully with SwiftUI.

Hey! I'm a veteran Mobile App Architect and Developer with a decade-long journey in crafting mobile applications. I'm a technology enthusiast who loves exploring new trends and challenges in the mobile app domain. ↳ Fluency in English ↳ Available to work any time zone ↳ Worked with clients around 16+ countries My mission is to provide exceptional returns on clients' technological investments globally through top-notch iOS and Android apps. Whether you are - a start-up - an individual - a technical expert - a company or digital agency I have the perfect solutions for your project because I deal with new trends and challenges daily basis. I specialize in high-quality Mobile App Development areas.: - iPhone native app development (Swift, SwiftUI, iOS SDK, Xcode) - Cross Platform Mobile App Development using Flutter, Dart, and React. - Expert in Upload apps in Appstore and Playstore - Android app development About me: - 25+ mobile apps developed to store - Best Shining Developer Awarded In during Corporate Company - Clean code: Please once check the code standard. (GitHub: shahsaumil2001) - Around 30+ Short/long Term Jobs Completed Successfully With 5 Star Rating - Apps developed by me, Around 50 million+ downloads on store, and users love to use them regular basis. Achievements: ↳ My Client App Was Awarded in IFAH ↳ 12+ years of professional experience ↳ My Client App 𝐓𝐨𝐩-𝐫𝐚𝐧𝐤𝐢𝐧𝐠 𝐟𝐢𝐭𝐧𝐞𝐬𝐬 𝐚𝐩𝐩𝐬 On App Store ↳ My client apps featured in 200+ Magazine and News Papers ↳ Top-Rated Plus Contractor (proven badge for large contracts) 🏆 𝗥𝗲𝘃𝗶𝗲𝘄𝘀 𝗮𝗻𝗱 𝗳𝗲𝗲𝗱𝗯𝗮𝗰𝗸 𝗳𝗿𝗼𝗺 𝗵𝗶𝗴𝗵-𝗽𝗿𝗼𝗳𝗶𝗹𝗲 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 (𝐥𝐚𝐫𝐠𝐞𝐫 𝐜𝐨𝐧𝐭𝐫𝐚𝐜𝐭𝐬 𝐭𝐡𝐚𝐧 $𝟑𝟎𝐊) 🏆 ⭐⭐⭐⭐⭐ I’m very satisfied with Saumil’s work. He was willing to take on any task and did whatever was necessary to complete the project. His excellent communication kept me informed of his progress and when tasks were completed, without needing to be asked. He quickly learned new technologies, successfully working on both iOS and React/NextJS. I would definitely hire him again. - 𝐉𝐞𝐫𝐞𝐦𝐢𝐚𝐡 𝐈𝐫𝐢𝐳𝐚𝐫𝐫𝐲, 𝐔𝐧𝐢𝐭𝐞𝐝 𝐒𝐭𝐚𝐭𝐞𝐬 ⭐⭐⭐⭐⭐ Saumil did an amazing job. He is very collaborative, has valuable inputs and suggestions, and is willing to jump in even when things are not as clearly defined (as often in startup work). Excellent communication and progress updates as he is working.- 𝐕𝐢𝐜𝐭𝐨𝐫 𝐉𝐨𝐬𝐞𝐩𝐡, 𝐈𝐫𝐞𝐥𝐚𝐧𝐝 🙋 𝐅𝐫𝐞𝐪𝐮𝐞𝐧𝐭𝐥𝐲 𝐚𝐬𝐤𝐞𝐝 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬(𝐅𝐀𝐐): Q1: Can you offer maintenance support post-development? A1: Yes, I offer free maintenance support for three months after mobile app development. Q2: Can you help with Mobile app design? A2: As an additional service, I provide mobile app UX design. Q3: Can you help with the landing page website for my mobile app product? A3: Yes, I can help to build the landing page for a mobile app product. Explore my perfect feedback on Upwork for a taste of what I can bring to your project. Let’s create something exceptional together! Please feel free to reach out to discuss how we can bring your vision to life. Kind Regards, Saumil Shah Keywords to find me : -------------------------- Native iOS App Developer, Android App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, API Integration, Frontend Developer, React.js, In-app purchases, Location, Payment Gateway Integration, Apple, Xcode, Push notifications, User authentication, User profile creation, SwiftUI, Mapbox, HealthKit, Alamofire, Google Analytics, Mapkit, OpenAI, ChatGPT, swift, Stripe, AppFlyer, Revenuecat. Last updated: 22 Nov 2024.

TOP-RATED Senior Mobile App Developer (iOS & Android) 🎖️ 4+ Years Professional Experience 🎖️ 30+ Mobile Apps Delivered 🎖️ 100% Client Satisfaction Focus Are you looking for a reliable mobile app developer who can turn your idea into a fully functional, App Store & Play Store–ready product with clean UI, smooth performance, and scalable architecture? You’re in the right place. I am a Senior Mobile App Developer specializing in iOS (Swift, SwiftUI, UIKit) and Android (Kotlin) development. I help startups, founders, and businesses build high-quality, production-ready mobile applications from scratch or improve existing ones. End-to-End Mobile App Solutions ⚙️ Core Services Full iOS & Android app development (idea → launch) UI/UX implementation from Figma / Sketch designs API integration & backend connectivity (Firebase, REST APIs) In-App Purchases & subscription systems Push notifications & user engagement features App Store & Google Play deployment support Bug fixing, performance optimization & app scaling 📱 Worked On Food Delivery Apps (User, Driver & Admin systems) Ride Booking Applications E-commerce & Marketplace Apps Startup MVPs & SaaS mobile applications Native iOS (iPhone/iPad) and Android apps Working With Me Means Clean, maintainable, production-grade code Smooth, modern, and user-friendly UI/UX Fast communication and reliable delivery Strong focus on performance and scalability Apps built to App Store & Play Store standards Looking for a developer who builds real products, not just apps? I can help you turn your idea into a fully functional mobile solution.

⚕ 100% Job Success-oriented work. ⚕ Open-minded person, ready to learn anything, easy to work with. ⚕ Self-motivated, strong organized, reliable, dedicated, fast learner and hard working iOS developer. ⚕ Excellent logical, analytical and computational skills. I’m an iOS developer with 3+ years of hands-on experience building apps end-to-end and shipping 30+ releases to the App Store. I mainly work in Swift (and use Objective-C when needed), and I’m comfortable taking a product from “Figma + API docs” all the way to a polished, stable production build. I work across both UIKit and SwiftUI, building clean, responsive interfaces with Auto Layout and modern state-driven UI patterns. I’ve implemented reactive flows with Combine and RxSwift, and I focus on making apps feel fast and reliable through careful performance work and stable architecture. My core interests are products where audio, AI, and real-world context matter. I’ve integrated OpenAI Whisper for transcription, built audio playback features with AVFoundation and AudioKit (including EQ/effects), and shipped location-based functionality using MapKit and Core Location. On the “production” side, I’m comfortable with secure authentication (Face ID / Touch ID, CloudKit), solid data layers (Core Data, Realm, Firebase), and scalable code structure (MVC, MVVM, VIPER where appropriate, SOLID, Clean Architecture). For networking, I’ve built REST API integrations with JSON using URLSession and Alamofire-style stacks, with proper error handling, retries, and clean separation between networking, domain logic, and UI. Design implementation: pixel-perfect UI from Figma, responsive layouts for all screen sizes Quality & performance: optimization, stability, clean code practices I care about shipping apps that don’t just work, but feel polished: clear UI, smooth interactions, maintainable architecture, and performance you don’t have to apologize for later.

🔥 Top Rated iOS Developer with a 100% Job Success Score! 🔥 Looking for a reliable and skilled iOS developer? With over 4 years of hands-on experience, I specialize in crafting high-quality, user-friendly mobile applications that deliver excellent performance and seamless user experiences. I bring a strong passion for innovation and attention to detail, ensuring every project I work on meets the highest standards. 💡 What I Offer: - 🏃‍♂️ Languages: Swift, Objective-C - 📱 Frameworks: UIKit, SwiftUI, Storyboard, XIB, Programmatic UI, Texture, SnapKit - ✍️ Features: API integration, User authentication, Push notifications, Third-party integrations, In-app purchases - 💾 Databases: Core Data, Realm, Firebase, SQLite - ⚙️ Reactive Programming: RxSwift, Combine - 🧼 Architecture: Clean Architecture, SOLID principles, Modular design - ✅ Testing: Unit Testing, UI Testing, Snapshot Testing - 🏛️ Design Patterns: MVVM, MVP, MVC, MV, VIPER - 🚀 CI/CD: Codemagic, Jenkins, Fastlane, GitHub Actions, GitLab CI/CD - 🌳 Version Control: Git, GitHub, GitLab, Bitbucket, Gitea - 🔧 Tools: Xcode, Instruments, Cocoapods, Carthage, SPM (Swift Package Manager) - 🔍 Performance Optimization: Profiling, Memory management, Code review - 👥 Team Collaboration: Agile methodologies, Code reviews, Mentorship and training I’m committed to delivering exceptional results on every project. Let’s collaborate and turn your ideas into world-class iOS applications!