Dmitry T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Sep 25, 2026.

🎖️9,000+ hours on Upwork🎖️| Only 5-star feedbacks |🎖️Top Rated Plus Senior iOS Developer specializing in Swift, SwiftUI, and Firebase. 700K+ earned, 9,000+ tracked hours, 100% success rate. Expert in native iOS development with proven ability to architect scalable apps, optimize performance, and drive measurable business outcomes. I combine deep technical expertise with strategic thinking to deliver solutions that users love and businesses value. TECH STACK: ✔ Languages: Swift (SwiftUI), UIKit, Objective-C ✔ Core Frameworks: SwiftUI, UIKit, Combine, Core Data, StoreKit ✔ Backend & APIs: Firebase, AWS, REST APIs, HTTP ✔ Real-Time & Communication: LiveKit, WebRTC, WebSockets ✔ Testing & Tools: XCTest, XCUITest, Xcode, Git, TestFlight, Crashlytics ✔ Databases: Core Data, Firebase Realtime Database, DynamoDB ✔ Monetization: In-App Purchases, StoreKit, Paywall A/B Testing MY PROVEN RESULTS: ✔ Increased App Store revenue by 28% by A/B testing the paywall ✔ Decreased crash rate by 45% through systematic optimization ✔ Increased user retention by 21% through analytics-driven improvements ✔ Shortened build times by 18% ✔ Reduced manual testing by 20% ✔ Architected reusable Firebase infrastructure used across multiple apps ✔ Mentored teams in Swift native development best practices Let's discuss how I can bring your app vision to life. 💬 Cheers, Dmitry