vitalii@lavreniuk:~

independent since 03.2026

vitaliilavreniuk

senior ios engineer

9+ years of Swift. My résumé is hiding in the dark behind this page — move your cursor, or tap, to read it.

try
vitalii0:swift*1:swiftui2:mentoring up 9y · 7 apps shipped · 3 awards · contributed to Headspace (100M+)

01 / work

$tree ~/projects

Commercial work built with teams, and the things I build on my own. Open any of them.

~/projects

commercial/ 3 · products built with teams, in production

MISTOled iOS · 2024–25City services in one app. Led iOS from zero to launch.

$ cat commercial/misto/README.md

A B2C/B2G app that hosts a city’s services in one place. I owned the iOS architecture from greenfield setup to the official launch in January 2025 and the first city rollout in Odesa in March 2025. Hands-on: parking payments, live public transit, air-raid alerts with shelter maps, power-outage schedules.

  • modular architecture
  • secure API
  • maps
  • real-time transit

Gold — Apps for Social Change · Silver — Apps for Digital Design · Bronze — UX, Interface & Navigation

Headspacesenior iOS · 2021–22Meditation app, 100M+ downloads. Contributed at EPAM.

$ cat commercial/headspace/README.md

Delivered production features for a globally used consumer app and helped hold a 99.9% crash-free rate under strict release standards, inside a complex architecture and a distributed team.

  • production features
  • release quality
  • distributed team
LetyShopslead iOS · 2022–24Cashback at scale. Lead iOS.

$ cat commercial/letyshops/README.md

Led iOS technical direction in a mature, high-traffic codebase: drove refactoring of legacy areas, shipped performance-sensitive cashback and shopping flows, and was the main reference for iOS engineers in architecture and code review.

  • refactoring
  • performance
  • code review

personal/ 6 · open source and my own App Store apps

Screenshot Studioopen source · 2026App Store screenshots as code.

$ cat personal/screenshot-studio/README.md

A code-first, local-first editor for App Store, Google Play and Microsoft Store screenshots. The visual editor and the CLI share one renderer, so the preview matches the exact-size export; a whole campaign, locales and RTL included, lives in one git-tracked JSON file.

  • TypeScript
  • Next.js
  • Konva
  • Playwright
  • GitHub Actions
github ↗
macupopen source · 2026One-command Mac upkeep for developers.

$ cat personal/macup/README.md

Toolchain updates (Homebrew, npm, Claude Code), safe cleanup of rebuildable caches, health and security checks, and trend reports. One-script install on a new Mac, with a selectable interface language.

  • Shell
  • Homebrew
  • CLI
github ↗
iStringmacOS · freeLocalization manager for Apple developers.

$ cat personal/istring/README.md

A Mac app for managing iOS and macOS localization. Free on the Mac App Store; latest release July 2025.

  • macOS
  • localization
mac app store ↗
GiftifymacOS · paidVideo → GIF. Paid, built and maintained solo.

$ cat personal/giftify/README.md

A video-to-GIF converter for the Mac. A paid Mac App Store app, built and maintained solo.

  • macOS
  • video
mac app store ↗
TikSaverLiteiOS · subscriptionsCreator tool, monetized with subscriptions.

$ cat personal/tiksaverlite/README.md

Designed, built and released solo, monetized with StoreKit subscriptions. Latest release March 2024.

  • SwiftUI
  • AVFoundation
  • Combine
  • StoreKit
app store ↗
WatchfulliOSConsumer app, solo from API to App Store.

$ cat personal/watchfull/README.md

Shipped solo: third-party API integration, persistence and the full App Store lifecycle.

  • SwiftUI
  • Core Data
  • third-party APIs

02 / log

$git log

The short version. The long one lives on LinkedIn.

  1. e3a91f0(HEAD -> main)2026go independent: Screenshot Studio, macup, own apps
  2. 7c2d4b82025StartupSoft: iOS architecture for an AI creator platform
  3. 9f0e5a1(tag: gold, silver, bronze)2024MISTO: lead iOS, greenfield → launch in Odesa
  4. 4b8c6d22022LetyShops: lead iOS on a high-traffic codebase
  5. a1d7e932021Headspace @ EPAM: features for 100M+ downloads
  6. 58e2f0c2020GlobalLogic: banking — biometrics, encrypted storage
  7. d94b1a72018Onseo: real-time betting UI over WebSockets
  8. 2f6c8e42017RIA.com marketplaces; teaching iOS at STEP
  9. c0ffee0(root)2016initial commit: freelance, first Swift

03 / readme

$cat README.md

What doesn’t fit in a commit message.

README.mdmarkdown · 12 lines
  1. # Vitalii Lavreniuk
  3. Senior iOS engineer. Swift first, Objective-C when the codebase asks.
  5. ## now
  6. - independent: Screenshot Studio, macup and my own iOS & macOS apps
  7. - building with Claude Code, MCP and agent skills — PRs, CI on every change
  9. ## also
  10. - MSc in Applied Mathematics, Donetsk National University
  11. - taught iOS at Computer Academy STEP
  12. - recorded “How to Swift Essential” for ITVDN and ran live coding streams

04 / contact

say hi

A project, a role, or a good Swift question — write me.

lavreniuk.vitalii@gmail.com