holod

One of Russia's largest banks and a pioneer of fully-digital banking — widely recognized for best-in-class mobile UX and product/design craft Modular CocoaPods components for a large corporate iOS app — Feature Flags & deep parent-app integration. Designed and shipped 3 fully isolated iOS modules (pods) with end-to-end ownership — navigation, DI, configuration and user flows. Built an interactive office map with Core Graphics (CGContext) from backend data, holding a stable 60 fps on target devices. Cut module memory footprint ~20% by introducing lazy loading and tiled rendering in the draw pipeline. Delivered a parking-booking module with calendar and a booking state machine covering 5+ employee scenarios. Shipped an events module (online / offline / hybrid / recurring) with complex registration logic — on time within the modular release cycle. Created a reusable component library adopted across the team, cutting new-screen development time ~30%. Covered module logic with unit & integration tests (XCTest, Quick & Nimble) and wired builds into CI/CD — build · lint · test — for reliable, repeatable modular releases. STACK: Swift · UIKit · async/await · MVP + Coordinator · Swinject · SnapKit · SwiftGen · Kingfisher · CocoaPods · Feature Flags

Small product team owning the full cycle: architecture → App Store → support. Took Quotes App from zero to App Store in 4 months — architecture, UI, monetization (Adapty), analytics (Amplitude), iOS 16 features. Integrated WidgetKit and Siri Shortcuts into Package Tracker with zero regressions, expanding home screen interaction. Added the Live Text API to Package Tracker, cutting data-entry friction on a core user flow. Refactored legacy Widget Art, reducing crash reports ~35% over two release cycles. Ran the full App Store lifecycle (submit, review, versioning, support) for 3 products simultaneously. Swift · UIKit · MVP+C · WidgetKit · Siri Shortcuts · Firebase · Amplitude · Adapty · REST API

Client iOS apps for large retailers — greenfield builds and legacy support, up to 4 projects in parallel. Built Perimeter, a TikTok-like B2B app, from scratch on VIPER + AVFoundation — video feed, camera, chat — MVP in 5 months. Refactored the geolocation layer of VkusVill Delivery, eliminating a class of map-rendering errors on weak signal devices. Shipped features for Magnit (100K+ users) — Yandex Metrica, Firebase push — with zero downtime on rollout. Introduced RxSwift into O'stin Buyer, removing callback hell and improving async readability on key screens. Maintained 4 production apps in parallel, holding sprint deadlines in an agency environment