Дмитрий Сачков

I’m a Senior iOS Engineer with 6+ years shipping production apps, owning everything from architecture and implementation to release management and mentoring. I like taking complex, high-load problems and turning them into stable, testable platforms.

At Coral Club, I helped stabilize a legacy UIKit/CoreData app to 98% crash-free at 100K+ MAU, then architected a greenfield SwiftUI platform from scratch (SwiftUI + MVVM-C + DI Container + SwiftData). I adopted Swift 6 strict concurrency with actor isolation so concurrency issues get caught at compile time.

I’ve driven measurable delivery and performance improvements across products: I migrated from MVC/MVP to MVVM + Combine for a +40% performance gain (eliminating redundant renders and memory pressure), and I built a Fastlane + GitLab CI pipeline that cut the release cycle from 2 days to 4 hours (92% faster releases).

Earlier, I built features in the audio playback pipeline and server-driven UI at MTS Music (millions of MAU) and refactored legacy UIKit with Dependency Injection for better testability and module isolation. I also worked contract-style on an on-device ML motion analysis platform, optimizing real-time video and integrating StoreKit 2, Apple/Google Sign-In, and CoreData migrations.