I'm Danis — 14+ years building production mobile apps in Swift, SwiftUI, Flutter and Dart. From subscriptions and audio pipelines to fintech card flows, I own the codebase from idea to App Store — often as the solo developer working directly with founders.
Three commercial apps where I owned mobile end to end — architecture, features, payments, release pipelines, and everything in between.
Own the full Flutter codebase for a document-to-audio consumer app: subscriptions & paywalls, streaming playback, background/offline downloads, notes, folders, auth, push, monitoring, CI and releases. Supported a subscription business with thousands of paying subscribers.
Owned the iOS app end to end for a banking / debit-card rewards product that launched card & banking features to real customers: onboarding, mobile verification, account/card UI, wallet, transactions, deposits, withdrawals, rewards, analytics, and TestFlight/App Store delivery.
Built the initial native Swift iOS app, then migrated and rebuilt the product in Flutter for iOS, Android and Web. Shipped learning flows with animated cards, study/testing modes, subscriptions, social login, groups, stats and full release automation — preserving functionality across the platform switch.
Deep in mobile, comfortable across the full delivery pipeline, and increasingly fast with AI-assisted engineering.
I started professional iOS development in 2012 with Objective-C, adopted Swift from Swift 2, and later moved into Flutter/Dart to ship cross-platform. Along the way I've worked at agencies, freelanced for foreign clients via Upwork, and embedded with US startup teams in the Y Combinator network.
I'm independent, practical and product-aware — happiest taking an ambiguous mobile problem from idea to a shipped, polished feature. Based in Kazan (GMT+3), open to remote work and relocation.
English: C2 Proficient (EF SET 79/100, 2022) · Russian: native
Looking for a mobile/product engineer who owns the codebase end to end? Let's talk.