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Ivan N.

Ivan N.

Senior Mobile App Developer | iOS Swift | Android | React Native

I'm a Mobile App Developer with 8+ years of commercial experience building native iOS, Android, and cross-platform React Native applications. Whether you need a polished native iOS app in Swift, an Android app, or a cross-platform solution in React Native, I deliver clean architecture, smooth UX, and code built to scale. ✅ 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝: 🧩 Native iOS apps, Android apps & Cross-Platform apps 🧩 App architecture 🧩 Firebase backend 🧩 Maps & GPS 🧩 In-App Purchases, subscriptions 🧩 Push notifications & biometric auth 🧩 Offline mode & local storage 🧩 REST API & third-party integrations 🧩 App Store & Google Play submission & compliance 🧩 Code review, refactoring, bug fixing & legacy modernization 💡 𝐃𝐨𝐦𝐚𝐢𝐧𝐬 & 𝐀𝐩𝐩 𝐓𝐲𝐩𝐞𝐬: ✔ Navigation & GPS Apps ✔ Travel & Audio Guide Apps ✔ Language Learning & EdTech Apps ✔ Team Collaboration & Productivity Apps ✔ Offline-First Mobile Apps ✔ Social Networking & Auth Apps ✔ Health & Fitness Apps ✔ E-Commerce & Marketplace Apps ✔ MVP Development from scratch ✔ SaaS Mobile Products 🔧 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: 🟢 Mobile: Swift, SwiftUI, UIKit, Kotlin, React Native 🟢 Architecture: MVVM+C, MVVM, MVC, MVP, SOLID, OOP, Clean Architecture 🟢 Backend & Cloud: Firebase (Auth, Firestore, Realtime DB, Cloud Functions) 🟢 Storage: CoreData, SQLite, UserDefaults 🟢 Maps & Location: MapBox, CoreLocation, Apple MapKit 🟢 Media: AVFoundation, Camera, OCR, audio sessions 🟢 Auth: Google Sign-In, Apple ID, Face ID, Touch ID 🟢 Payments: In-App Purchases, StoreKit 🟢 Tools: Xcode, Android Studio, Git, GitHub, GitLab, Jira, Figma, SwiftLint, Cocoapods, Swift Package Manager, Fork 🟢 Testing: XCTest, unit testing, code review 🟢 Networking: REST APIs, Moya, URLSession, Concurrency 🚀 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 🎯 I deliver on deadline - always. No exceptions. 🎯 Clean, scalable code with architecture that won't slow you down as you grow. 🎯 Proactive communication - you always know the project status. 🎯 Enterprise background - agile, code reviews, sprint planning. 🎯 Upper-Intermediate English - no communication gaps. 🎯 I own the full cycle: design review → development → testing → store submission. Available 𝟰𝟬 𝗵𝗼𝘂𝗿𝘀 𝗽𝗲𝗿 𝘄𝗲𝗲𝗸 flexible with time zones to discuss your mobile app project! Message me - I respond within a few hours. 🚀

🇺🇦Drohobych, Ukraine$28/hr40% JSS5.00 (1)Since Jan 2026
GlobeUpwork

Earnings and projects

MRR
$1.4k

Last 6 months ÷ 6

World#35,026 / 412k
🇺🇦Country#1,709 / 14.3k
Revenue, last 30 days
$1.7k

Last 6 months: $8.3k

World#25,822 / 412k
🇺🇦Country#1,265 / 14.3k
Total earnings
$9.2k

Billed in all: $9.6k

World#203,562 / 412k
🇺🇦Country#8,919 / 14.3k
Per project
$4.6k

$4.2k in the last 6 months

World#37,796 / 412k
🇺🇦Country#2,241 / 14.3k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇺🇦Country#3,419 / 14.3k
Projects in all
2
0% fixed100% hourly
World#328,886 / 412k
🇺🇦Country#12,165 / 14.3k

Earnings, last 30 days

$9.6k+$1.7k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$7k$8k$9k$10kOct 8Oct 23Nov 7

Skill rankings: Top 9% in Location-Based Service

Ranked by MRR among everyone on Upwork with the skill.

  1. #12Location-Based Service138 freelancers · 🇺🇦 #2Top 9%
  2. #27User Profile Creation213 freelancers · 🇺🇦 #3Top 13%
  3. #56Mobile App Bug Fix453 freelancers · 🇺🇦 #6Top 12%
  4. #62User Authentication698 freelancers · 🇺🇦 #7Top 9%
  5. #64iPad App Development446 freelancers · 🇺🇦 #10Top 14%
  6. #147Smartphone995 freelancers · 🇺🇦 #38Top 15%
  7. #166Hybrid App Development1,431 freelancers · 🇺🇦 #17Top 12%
  8. #253AI Mobile App Development1,401 freelancers · 🇺🇦 #26Top 18%