Dmitry Petrov
Senior iOS Developer
Tbilisi, Georgia
Senior iOS Developer with 8 years of experience building high-load, business-critical apps — from a banking app that reached #6 in the App Store Finance category to an IPTV platform with 2M+ active users, which I rebuilt from the ground up in SwiftUI and Combine. Four years in production with SwiftUI, Combine and Swift Concurrency: async/await and actors in the networking and business-logic layers, Combine for UI state, and a migration to Swift 6 strict concurrency. I own features end to end — from architecture to App Review and business metrics. Built an internal SDK and mentored 3 junior developers.
Experience
ER-Telecom
IPTV app for a major telecom operator — 2M+ active users.
- Rebuilt the app from the ground up in SwiftUI + Combine, replacing an 8-year-old Objective-C / RxSwift / Storyboards codebase: full feature parity plus new features and a new design in ~80% less code, while maintaining the old app in parallel.
- Defined the new app's architecture: Swift Concurrency (async/await, actors) for networking and business logic, Combine for UI state; moved the codebase to Swift 6 strict concurrency with Sendable types and actor isolation.
- Owned the card payment integration via a bank API end to end — timeout and error handling, idempotent retries, 3-D Secure, payment status tracking, monitoring and payment-flow tests — and got it through App Review, which had blocked the release over third-party payments; in-app sales in the new app doubled compared to the old one.
- Introduced unit and UI testing into the team workflow — XCTest for business logic and view models, UI tests for the EPG (TV guide) and authentication flows.
- Led end-to-end Siri integration from scratch, owning the complete user flow and feature delivery.
- Contributed to two custom streaming players with PiP and DRM content protection.
- Made the EPG faster and more informative, built on UIKit and WebSockets.
- Integrated 3 analytics systems — Firebase, Yandex Metrica and in-house solutions.
- Developed an MVP application for tvOS.
- Rapidly shipped new features to meet telecom regulatory requirements.
Mad Brains
8 client projects across industries as an external contractor — MVVM + Coordinators, UIKit, RxSwift, Alamofire.
- Built InfinBank, a business banking app, from scratch in a 2-person team; it reached #6 in the App Store Finance category and held that position for 2 months.
- Designed and built an SDK with a demo app for a telecom company's internal use, mentoring 3 junior developers throughout the project.
- Implemented 10+ features for a joint-budget app, including biometric authentication (Face ID / Touch ID), user profile, guest mode, chat, piggy banks, groups, and archive.
- Led the app redesign for an auto repair chain's rebrand, implementing a discount system, push notifications, Facebook integration, and online booking.
Blogman
- As part of the product team, implemented 50+ features for WebSocket messaging, calls, and notifications using VIPER, UIKit, Realm, and Alamofire.
Education
Aerospace Institute, Orenburg State University (OSU)
Management and IT in Technical Systems
Institute of Risk Management and Integrated Security, Orenburg State Agrarian University
Informatics and Computer Engineering
Physics and Mathematics Lyceum
Specialized Mathematics Class
Tools of the trade
Core
- Swift
- SwiftUI
- UIKit
- Foundation
Concurrency
- Swift Concurrency (async/await, structured concurrency, actors, Sendable)
- Swift 6 strict concurrency
- GCD
Reactive
- Combine
- RxSwift
Architecture
- MVVM + Coordinators
- VIPER
- SOLID
- Protocol-oriented design
Networking & Data
- Alamofire / Moya
- REST
- WebSockets
- GraphQL
- Realm
Testing
- XCTest (unit)
- XCUITest (UI)
Security & Payments
- Biometric auth (Face ID / Touch ID)
- 3-D Secure
- DRM content protection
- Bank payment API integration
Analytics
- Firebase
- Yandex Metrica
- Custom analytics
Platforms
- iOS
- tvOS
Frameworks & Libraries
- SiriKit
- LocalAuthentication
- MapKit
- CoreLocation
- Google Maps
- Yandex Maps
- SnapKit
CI/CD
- GitLab CI
- Fastlane
Hardware & Embedded
- MCU firmware (STM32, AVR, PIC)
- FPV drone builds
Tools
- Charles
- Proxyman
- Postman
- Figma
Languages
Russian — native
English — B1
Chinese — A2
Get in touch
Elsewhere
Same handle across socials & messengers
@kenzot_fpv