I'm a senior iOS developer with more than 20 years programming background. I experienced in full-cycle mobile development including architecture design.
As an advantage, I have strong skills in network and low-level programming, that helps me write maximum effective code where it needed. My practice caver other platforms like Android, back-end using Ruby On Rails and React Native for mobile.
During last 15 years, I working on high-quality iOS applications for different industries, including medicine, marketing, advertisement, etc as a developer, team-lead, and project manager. Last 8 years - as a freelancer on UpWork.
It's important to me to create supportable and upgradable applications. I prefer to build long-term relations with my customers. When they come back to add support for new mobile devices or new features - I always glad to see that application continue its life.
I'm open to working as a part or lead of the team or as an individual developer.
Swift
Mobile App Development
React Native
C
Objective-C
Android SDK
SQL
Cocoa Touch
Object-Oriented Programming
Project Management
Ruslan P.
Dnipro, Ukraine
$40/hr
4.8
3 jobs
Hi! I'm a Lead iOS Software Engineer from Ukraine.
For the last 9+ years of native iOS development, I was involved in 10+ commercial projects with up to 15 million active users.
Worked as a solo developer and in 200+ teams.
Wrote apps from scratch as well as was involved in rewriting/refactoring of 7-year-old Obj-c legacy code.
Xcode, Swift, UIKit, CoreData, Scrum, Agile – 7+ years;
SwiftUI, TDD, XCTest, Vapor - 1+ year;
MVC, MVVM, MVP, CleanSwift;
Network (REST, GraphQL, Alamofire, Postman, Charles Proxy);
SDKs: Google Maps, Firebase, Fabric, Crashlytics, Sentry, AppSpector, NewRelic, Pendo;
GIT: Complex merge-conflicts resolving skill (GitKraken);
CharGPT productivity boost;
Currently, I live in Ukraine in a safe place with independent electricity and internet sources.
Good analytical skills. Work well in a team. Some say that I have a good sense of humor. People person.
Swift
Apple Xcode
iOS Development
UIKit
Objective-C
Core Data
GraphQL
Charles Proxy
RESTful API
Core Location
Apple Motion
Apple Watch Application
Jira
Figma
Viktor H.
Nikolaev, Ukraine
$40/hr
5.0
11 jobs
Senior iOS Developer with 13+ years of experience in mobile application development.
Specialized in Swift, SwiftUI, UIKit, and multithreading (GCD, Operations, Swift Concurrency). Experienced in implementing complex architectures (MVVM, VIPER) and optimizing performance for applications with an audience of over 5M users.
Skilled in integrating with REST and GraphQL APIs. Proven track record in leading small teams and mentoring developers.
• Led the development of a mobile application that reached 5M+ monthly active users.
• Improved application performance by 20% through deep code optimisation and effective memory management.
• Successfully delivered and launched over 15 high-load mobile applications to the App Store.
• Built a smart home control app used by 20K+ active users, increasing user retention by 35% through UX improvements.
• Developed solutions with RTMP streaming, Core Bluetooth, and 3D printer control capabilities.
• Managed cross-functional teams of up to 5 developers, ensuring on-time delivery and high product quality.
Personal skills:
responsibility, diligence, punctuality, honesty, commitment, desire for self-development, fast learning, communicative
Swift
iOS Development
Objective-C
SwiftUI
UIKit
Grand Central Dispatch
Core Data
Push Notifications
REST API
Firebase
Git
Unit Testing
CI/CD
App Store Optimization
Map Integration
Oleksandr T.
Zaporizhia, Ukraine
$15/hr
5.0
2 jobs
Dedicated iOS Developer specializing in Swift. I combine a Computer Science background with a strong commitment to delivering engaging, high-quality mobile solutions. Let's collaborate to build your next amazing application.
Swift
iOS Development
English
UIKit
SwiftUI
GitHub
Git
Object-Oriented Programming
Grand Central Dispatch
RESTful API
Core Data
SQL
SQLite
Firebase
Data K.
Kyiv, Ukraine
$50/hr
5.0
10 jobs
Greetings!
My name is Data. I'm a skilled and reliable native iOS developer for over 6 years now. I care about the architecture of the app, clean code and task prioritization. I responsibly assume the challenges and goals that are assigned to me and solve problems efficiently. My primary goal is to understand what my client needs and find the best possible solution. I do believe that solid, constant communication is the key to a successful project.
Please feel free to contact me and have a nice day.
Swift
iOS
iOS Development
Mobile App Development
Websockets
UIKit
Core Data
Google Maps API
Objective-C
Push Notifications
Payment Functionality
Native App Development
In-App Purchases
User Authentication
Smartphone
Taras C.
Kyiv, Ukraine
$35/hr
5.0
25 jobs
Senior iOS / iPadOS / watchOS / tvOS / macOS Developer — 7 years, 15+ shipped apps, 1M+ users reached.
I build native Apple apps end to end: idea → architecture → UI → App Store → post-launch iteration. Swift & SwiftUI first, clean architecture, and no shortcuts that cost you later.
✅ PROVEN RESULTS
⭐️ Shipped and maintained an app with 1,000,000+ users (core team of 3).
⭐️ Kept a 150,000-user app at 99.96% crash-free (team of 2).
⭐️ Led products from idea → design → refinement → implementation → release.
⭐️ 15+ delivered projects across iPhone, iPad, Apple Watch, Apple TV and Mac.
⭐️ Built my own apps: a spaced-repetition learning app (Ebbinghaus forgetting curve) and an enhanced music player.
🎯 WHAT I CAN DO FOR YOU
▸ Build a new iOS app from scratch — MVP in weeks, not quarters
▸ Rescue or refactor a legacy Objective-C / messy Swift codebase
▸ Kill crashes, memory leaks, slow launch time and laggy scrolling
▸ Get you through App Store review (rejections, privacy, ATT, guidelines)
▸ Add monetization: subscriptions, in-app purchases, paywalls, ads
▸ Port an iPhone app to iPad, Apple Watch, Apple TV, CarPlay or macOS
▸ Take over an abandoned project and actually ship it
🛠 TECH STACK
🟢 Languages: Swift, Objective-C, Python (basic)
🟢 UI: SwiftUI, UIKit, AutoLayout, SnapKit, Core Animation, WidgetKit, Live Activities, App Clips, Dark Mode, Accessibility / VoiceOver, Localization
🟢 Architecture: MVVM+C, VIPER, TCA, MVC, Clean Architecture, SOLID, Facade, Adapter, Decorator, Factory Method, Singleton, Builder, Observer, Command
🟢 Concurrency: Swift Concurrency (async/await, actors), GCD, OperationQueue
🟢 Reactive: Combine, RxSwift, ReactiveSwift, ReactiveCocoa
🟢 Networking: REST API, URLSession, Alamofire, Moya, AFNetworking, GraphQL (Apollo), WebSockets, Socket IO
🟢 Data: Core Data, Realm, SQLite, SwiftData, CloudKit, Keychain, Firebase Cloud Firestore, Firebase Realtime Database
🟢 Apple frameworks: Foundation, MapKit, Core Location, AVFoundation, AVKit, HealthKit, StoreKit 2, PassKit, EventKit, HomeKit, SiriKit, App Intents, PushKit, WatchKit, TVMLKit, WebKit, SpriteKit, Core Bluetooth, Core Motion, Core ML, Vision, Speech, Contacts, CarPlay
🟢 Services & SDKs: Firebase (Analytics, Crashlytics, Remote Config, Dynamic Links), OpenAI API, Stripe, Apple Pay, Twilio API, Google Maps, Google Places, Google AdMob, Facebook SDK, Sign in with Apple, Amplitude, Mixpanel, Sentry, RevenueCat, OneSignal
🟢 Quality & CI/CD: XCTest, unit & UI testing, Fastlane, Xcode Cloud, GitHub Actions, Bitrise, SwiftLint, Xcode Instruments, TestFlight, App Store Connect, code review
🟢 Tools: Xcode, Git, GitHub, Sourcetree, SPM, CocoaPods, Carthage, Figma, Sketch, Zeplin, Postman, Proxyman
🟢 Process: Agile, Scrum, Kanban, JIRA, Trello, ClickUp
💡 FEATURES I'VE SHIPPED
In-App Purchases & subscriptions · Payment Gateway Integration · Push Notifications · User Authentication & User Profile Creation · Chat & Messaging · Map Integration & Location-Based Services · Bluetooth / BLE · Camera & Photo · Microphone & Audio · QR & Barcode Scanner · Offline Functionality & Sync · Deep Links & Universal Links · Social Media Account Integration · In-App Search · AI Text-to-Speech · Face Detection · Motion Sensors · Advanced Analytics & A/B Testing · In-App Advertising · Review & Feedback Collection · Application Security · API Integration · In-App Support
📦 SERVICES
Native App Development · Mobile App Development · Mobile App Redesign · Mobile App Improvement · Mobile App Bug Fix · Mobile App Testing · Mobile App Localization · App Store Optimization · Mobile App Development Consultation · iPhone & iPad Apps · Apple Watch Application · Apple TV Application · macOS Application
🤝 HOW I WORK
✔️ Clear English, regular updates, no disappearing acts.
✔️ Your timezone matters — I overlap with both US and EU hours.
✔️ Estimates you can plan around, and a heads-up the moment something changes.
✔️ Clean, documented, testable code that you or your next developer can own.
✔️ NDA-friendly — your idea stays yours.
Thanks for reading this far 🙂
Tell me what you're building, and I'll reply with an honest estimate plus the first thing I'd fix
Swift
iPhone & iPad Apps
Apple Xcode
iOS
iOS Development
iOS SDK
iPad App Development
Mobile App Development
SwiftUI
UIKit
RESTful API
Push Notifications
tvOS
watchOS
AI Mobile App Development
App Development
Apple Watch
iPhone
AI App Development
App Store Optimization
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