Specialized in Swift and SwiftUI. Doing all kinds of things with Accelerate and Vision frameworks. Special skill to find and fix bugs and eliminate bottlenecks, woodpecker of the code, making your codebase healthy.

Senior iOS Engineer with 10+ years of experience building high-quality apps, fixing critical performance issues, and shipping features end-to-end. I specialize in jumping into existing codebases, diagnosing what’s wrong fast, and delivering clean, maintainable solutions without slowing your team down. I’ve led development on large-scale consumer apps, including high-traffic retail and e-commerce systems, and I’m extremely comfortable with modern Swift, SwiftUI, UIKit, concurrency, Combine, and architectural patterns (MVVM-C, modularization, dependency injection, etc.). What I’m great at: 🔹 Building new features from scratch 🔹 Fixing crashes, optimizing performance, and improving stability 🔹 Cleaning up messy or legacy UIKit code 🔹 Refactoring for modularity and long-term maintainability 🔹 Rapid MVP builds for startups 🔹 Quick bug fixes, triage, and App Store compliance issues I work fast, communicate clearly, and deliver work that holds up long after the project ends. If you need a senior engineer who can ship, not just talk about architecture — I can help. Hourly Rate: $95–$120 (depending on scope and urgency)

I’m a Senior iOS Developer with 10+ years of professional experience and an MS in Computer Science. I help companies design, build, and scale high-quality iOS applications that are reliable, intuitive, and crash-free. 🚀 What I Bring Proven iOS Expertise – Swift, SwiftUI, Objective-C, and cross-platform (React Native, Kotlin). BLE Mesh & Firmware Communication – Experience developing apps that integrate with BLE Mesh lighting systems and embedded firmware, including device provisioning, node status monitoring, and OTA updates. End-to-End Delivery – From architecture & development to App Store release & maintenance. Payments & Fintech – Integrated Apple Pay, Revolut Pay, VISA SDKs and built secure banking solutions. Performance & Testing – Increased code coverage from 20% → 75% and delivered 99% crash-free user rate. Agile Collaboration – Worked with international teams in Agile/Scrum, mentored juniors, and led technical interviews. 🏆 Highlights Travel & Flight Booking App – migrated core pages from Objective-C to SwiftUI, integrated payment SDKs. Firebase integration, Remote Config & Analytics & Crashlytics. iOS Banking App – led full rebuild with modular architecture, achieving 80%+ test coverage. Indoor AR Navigation App – developed custom pedometer & beacon-based positioning system for a large hospital. BLE Mesh Lighting Control App – built iOS app for provisioning, controlling, and monitoring BLE Mesh devices with firmware-level communication. 🔧 Tech Stack iOS: Swift, SwiftUI, Objective-C, XCTest, XCUITest, Snapshot Testing Connectivity: BLE Mesh, Bluetooth Low Energy, Firmware Communication, OTA updates Backend & Cloud: Node.js, Flask, FastAPI, AWS, Azure, Docker, Kubernetes ML/AI: TensorFlow, PyTorch, Generative AI, Computer Vision, Medical Imaging ✅ If you need a reliable senior engineer who can deliver production-ready, scalable apps, let’s connect. I can help with new builds, app modernization, bug fixing, and advanced features like BLE Mesh integrations, payments, AI, or cloud backends. Below I am sharing a few categories of apps that I have developed from scratch. *Flight Booking Application * Online Payment Application * Banking Application * Fintech Application * Navigation and Indoor Navigation Application * Image processing *Bluetooth Mesh *Bluetooth - BLE * Document Management && E-sign Application * E-commerce Application * Beacon Based Application * Photo Editing Application

I am a UK-based app developer and professional software engineer with extensive experience building Mobile, Web and Enterprise level applications. I have been practising my craft professionally for over twenty-five years and I have been building mobile apps for iOS since 2011. Expertise: ✅ iOS - iPadOS - tvOS - watchOS - macOS - Swift - SwiftUI - Objective C - UIKit ✅ AppStore Connect - RevenueCat - Git - Jira ✅ SQL - Oracle - MySQL - SQLite - Unix - REST ✅ Java - Hibernate - SOAP - Redhat ✅ WordPress - HTML - CSS - JavaScript - TypeScript - PHP ✅ DNS - Hosting Good software engineering is not just about the technical skills, it is also about great communication, a focus on delivery, excellent problem solving and a desire to learn. My Background: I have a degree in Computing from Napier University, Edinburgh, and have previously worked across a range of software engineering roles in Defence, Government, Health and Finance. I am a TOGAF certified enterprise architect and I have professional certifications in Java Programming and Oracle Database Administration. But don't let all that bamboozle you, I'm a down-to-earth developer with excellent communication skills, who will work with you to build exactly what you need. I am also a Top Rated freelancer here on Upwork and have a vast amount of experience that I can bring to your project, no matter how big or small. I love building applications and digital products from the ground up, and I love using my skills to help solve digital problems. If I were to summarise — I'd say, I love making things work. I also love talking tech — so whether it's working out the best way to do something, updating an existing app, or building something from the ground up — drop me a message, it is free to talk it over.

I build and rescue mobile apps that ship — 12+ years in native iOS (Swift, SwiftUI, UIKit) and 4+ years in Flutter, with production apps in fintech, gambling, crypto, and transit. What makes me different from most Flutter developers: I shipped native first. Platform channels, native modules, App Store review quirks, performance profiling — the places where Flutter-only developers get stuck are where I'm strongest. RECENT WORK: Architected a Flutter gambling app from scratch (BLoC, multiple payment gateway integrations, Firebase) for iOS and Android Led an iOS chapter of 7 engineers at one of Georgia's largest banks — SwiftUI at scale, MVVM+Coordinator architecture, modular 2FA system Built and shipped a real-time transit app for the City of Ottawa to both the App Store and Google Play from a single Flutter codebase Developed a crypto wallet with NFT ticketing, Web3 logins, and biometric authentication Maintained and hardened a high-load iOS betting app for a major UK gambling brand WHERE I'M MOST VALUABLE: Flutter apps that need to feel truly native on iOS Migrating native iOS/Android apps to Flutter or Kotlin Multiplatform Rescuing troubled codebases — clean architecture, testing, CI/CD (Fastlane, GitHub Actions, Bitrise) Launch-phase work: stabilization, performance, App Store submission and review

With 12+ years of experience, I am an expert iOS Engineer who specializes in developing mobile applications using both Swift and Objective-C for the Internet of Things (IoT), social networks, video processing/ streaming, and other industries. I have a deep understanding of the iOS ecosystem, and Apple frameworks such as UIKit, SwiftUI, Core Data, Combine, and others. I have a good understanding of the software development process, from requirements gathering to deployment. I can expertly lead and mentor teams of engineers to deliver projects on schedule, within budget, and to a high standard. I have a passion for creating user-centric apps that are not only functional but also easy to use and intuitive. With more than 40 projects completed both individually and as a member of other teams, I have a proven ability to develop and implement effective solutions to technical challenges and to work with cross-functional teams to deliver projects on schedule and within budget. I am always looking to improve my skills and stay current with the latest developments in the field. EXPERTISE: - Programming Languages: Objective-C (8y), Swift (6y); - Technologies: UIKit, SwiftUI, Combine, CoreData, CoreLocation, Social, MediaPlayer, AVFoundation, GraphQL, SQLite, HomeKit, OAuth, WebSockets - App architectures: MVVM / MVC / MVVM-C / VIPER / TCA; - Development Tools: Xcode, Reveal, LLDB; - Bug tracking: Xcode Tools, Jira, Google Analytics, Flurry, Crashlytics, HockeyApp; - Unit testing: XCTest, Quick/Nimble; - 3rd party frameworks: Alamofire, Realm, Firebase, RxSwift, GRDB, others My experiences include building: - complex social network projects - iOS and Mac OS utility apps - indoor navigation - iBeacon / Eddystone integrations - audio/video streaming applications - IoT / smart home device integrations with Bluetooth / WiFi connectivity

I help startups and businesses build and scale reliable Flutter applications with clean architecture, optimized state management, and production-ready backend integration. Most Flutter apps struggle when they grow because of poor structure, unnecessary rebuilds, and weak backend design. I focus on building apps that stay fast and maintainable even as features scale. What I do: - Build production-ready Flutter apps (iOS + Android) - Design scalable architecture (Clean Architecture with Bloc/Riverpod/Provider) - Integrate Firebase, Supabase, REST APIs, and LLM APIs - Implement payments (Stripe / in-app purchases) - Optimize performance (reduce rebuilds, improve responsiveness) What I focus on in every project: - Clean, maintainable codebase built for long-term scaling - Smooth UI performance under real-world load - Proper separation of business logic and UI - Backend structure that supports growth (not just MVP) Recent work focus: - Startup MVP development - AI-powered mobile apps (chat, automation, API-driven features) - Refactoring and scaling existing Flutter codebases - Performance optimization for production apps If you’re building or scaling a mobile product, I can help you structure it properly so it performs well today and continues scaling without rewrites.

👋 Need a high-quality iOS app? Let’s build it together! Top 1% UpWork Freelancer I’m a Senior iOS Developer with 14+ years of experience and 85+ completed projects, delivering top-tier iOS apps with Swift, SwiftUI, and Objective-C. I specialize in social networks, financial apps, AI-driven solutions, and location-based services. 🚀 What I can do for you: ✅ Full-cycle iOS app development – from concept to App Store launch. ✅ Seamless API integration – REST, WebSockets, Firebase, AWS. ✅ Pixel-perfect UI implementation – Figma, Sketch, Adobe XD. ✅ AI-powered apps – OpenAI, GPT-based solutions. ✅ Geolocation & Maps – Google Maps, Mapbox, Apple Maps. ✅ In-app purchases & subscriptions – with server-side validation. ✅ Server-side development – using Swift & Firebase for lightweight backend solutions. ⚙️ Tech Stack: Swift, SwiftUI, Objective-C, Firebase, AWS, REST APIs. 📈 Why me? ✔️ 85+ completed projects – from MVPs to enterprise apps. ✔️ Clean, maintainable code with Apple’s best practices. ✔️ Strong problem-solving skills and focus on performance optimization. 💬 Let’s talk! I’m here to turn your vision into a high-quality app.

MY SKILLS: * Platforms: iOS, iPadOS, watchOS, macOS * Languages: Swift, Objective-C, Dart & Flutter * Frameworks: UIKit, SwiftUI, MapKit, CoreLocation, AVKit, StoreKit etc * Databases: Core Data, CoudKit, Realm, Firebase, SQL, ObjectBox, Parse * Other Libraries/frameworks: AWS, AFNetworking/AlamoFire, SDWebImage, Vapour, SnapKit, Sourcery, SwiftGen & more * Source Control: Git, GitHub, Bitbucket. MY EXPERIENCE: * Programming since 2010 * Releasing iOS apps since 2014 * Freelancing on Upwork since 2016 * Top Rated freelancer since 2016 "Top Rated Plus is our way of highlighting freelancers and agencies who consistently perform on large contracts at the highest level." * Expert Vetted since 2023 "Expert-Vetted Talent is the top 1% — pre-screened by our Talent Managers and experts in their field." (this badge is only visible to Enterprise clients). * 100% Job Success Score since 2016 * Clients who would recommend me according to Upwork statistics: 98% * 62 completed contracts, 52 5 star reviews, 3 ~4.50 star reviews, 7 no feedback given * I estimate over 15,000 hours of coding experience creating apps and libraries for clients, my business and for fun * 8 apps published under my own developer account * 40+ apps released or updated for clients MY SERVICES: * Developing New Apps: Bring your ideas to life, whether you have a fully fleshed-out design or just a rough concept. I can work with you from the pre-development stage to app store release and beyond. * Enhancing Existing Apps: Improve your app by fixing bugs and implementing new features. If you're unsure about what needs to be done, I can review the code, identify problem areas, provide a full report and an estimate for you to decide on priorities and budget. * Consulting: Benefit from my expertise to guide you through the development process, ensuring you make informed decisions and achieve your project goals. * AI Generated Code Consultations: If you've been building your own app using AI to generate the code and have gotten stuck or need help, I can review the code and guide you to the next steps. MY WORKING STYLE: * Communication: I maintain clear and open communication for successful collaboration. I'm flexible with using Upwork, Slack, Zoom, Email, Phone, etc., as long as it complies with Upwork's rules. * Architecture: I write modular and S.O.L.I.D. code for better maintainability and reusability. * Unit Testing: I write unit tests to ensure app stability and maintainability, reducing development costs and improving app performance.

📱💻🖥️⚒️ Seasoned software engineer with years of experience in materialising ideas & concepts into reality. I love what I do, and do what I love. I strive to be bigger than myself by helping enrich the lives of others. 🧬 MODUS OPERANDI: ✅ Robust & carefully thought out solutions, instead of quick & dirty ones, to achieve the highest standards in the long term ✅ Adherence to Apple's Human Interface Guidelines & industry-leading standards such as DRY, SOLID & AGILE to deliver the best and most responsive products in the least amount of time possible. ✅ Extend beyond development in Xcode to include Unit & UI Testing, Performance Analysis via Instruments, and deployment to TestFlight, FastLane, AppCenter and AppStore 🧑🏻‍💻 SKILLS: ✔️ Languages: Swift | Objective C | C | C++ ✔️ UI Technologies: SwiftUI | UIKit | AppKit ✔️ Networking: Vapor [Server Side Swift] | Alamofire ✔️ Data Flow: Combine | Swift Concurrency ✔️ Software Architectures: MVC | MVVM | Redux | VIPER ✔️ Apple Frameworks: CoreData | ARKit | RealityKit | Network Extension | AVFoundation | Photos | Contacts | UserNotifications | MapKit | CoreLocation | StoreKit | IOKit | ObjCRuntime ✔️ 3rd Party Frameworks: Firebase | Twilio | Google ✔️ Project Management: Asana | GitHub Projects | JIRA ✔️ Comms: Slack | Google Chat 🏆 ACCOMPLISHMENTS: ⭐️ Connected Over: Development of full-fledged VPN apps for iOS & macOS using OpenVPN, IPSec & IKEv2 protocols ⭐️ AlbumSaver: A Photo deduplication macOS & iOS app to scan all photos and videos and save them onto a proprietary flash drive ⭐️ Editable: A macOS application to annotate videos, animate the annotations, and export the videos. ⭐️ Buddyng: A social media application that provides a forum for travellers to connect, and inspire the community. I have worked extensively with the team in Brighton and it's been stellar working with them ⭐️ CoachBot: An EdTech app for students to assess their progress in learning, and gamify the experience ⭐️ espressoFlowHelper: The underlying driver that enables touch and stylus inputs to a Mac from a proprietary display. I have had the pleasure of meeting and working with team espresso in person for a brief duration in Sydney and it was simply amazing. ⭐️ Snap Display: A Display Management app to control Orientation, Arrangement & Zoom for macOS and Windows ⭐️ SideLine Scout: An iPadOS App for recording streams of videos for sports athletes. ⭐️ PowerKeys: An app to add Shortcuts for functionality in Lightroom Classic For full stack development & Software Development, I have collaborated with a team to handle other relevant skills required, including UI/UX conception, Android app and backend development. Now enough about me! Let's connect to discuss your requirements & ideas, and bring them to life! 🔥