vitalii@lavreniuk:~

independent since 03.2026

vitaliilavreniuk

software engineer · product builder

I take products from an empty repo to the App Store — with a team (MISTO, three awards) or solo (my own apps, live since 2018). The grey code behind this page is my résumé, written in Swift: move your cursor, or tap, to shine a light on it.

try
vitalii0:product*1:ios2:macos3:ai4:teaching up 9y · 5 products shipped from scratch · 7 companies · 3 awards · Headspace (100M+)

01 / work

$tree ~/projects

Products built with teams, and products I own. Open any of them.

~/projects

commercial/ 7 · built with teams, 2017–2026

StartupSoftsenior iOS · 2025–26AI creator monetization platform. iOS architecture.

$ cat commercial/startupsoft/README.md

problem
An early-stage AI creator monetization platform: pre-launch, with features and API contracts changing all the time.
my call
Drove the iOS architecture: modular SwiftUI features that survive product changes, and a networking layer that absorbs evolving GraphQL and REST contracts.
result
Stability improved through targeted memory and lifecycle profiling.
  • modular SwiftUI
  • GraphQL
  • REST
  • profiling
MISTOled iOS · 2024–25City services in one app. Led iOS from zero to launch.

$ cat commercial/misto/README.md

problem
A B2C/B2G app that has to host a whole city’s services in one place.
my call
A modular service-domain architecture; owned iOS architecture and direction from greenfield on a two-person team, with code-review and architecture standards.
result
Official launch in January 2025, first city rollout in Odesa in March 2025, three awards.

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

app store ↗
LetyShopslead iOS · 2022–24Cashback at scale. Lead iOS.

$ cat commercial/letyshops/README.md

problem
A mature, high-traffic cashback platform carrying legacy areas.
my call
Led iOS technical direction: refactored legacy areas and became the main reference for iOS engineers in architecture and code review. In my second year, also led a new project from its start.
result
Less technical debt; performance-sensitive cashback and shopping flows shipped.
  • refactoring
  • performance
  • code review
app store ↗
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
app store ↗
GlobalLogiciOS · 2020–21Digital banking. Secure auth and transactions.

$ cat commercial/globallogic/README.md

A digital banking app. Implemented secure authentication and transaction flows, integrated biometric authentication and encrypted local storage for sensitive data, and delivered a production release together with backend and QA.

  • biometrics
  • encrypted storage
  • secure flows
OnseoiOS · 2018–20Live sports betting, UK market. Real-time UI.

$ cat commercial/onseo/README.md

A regulated real-time gaming platform for the UK market. Built live-sports betting interfaces with high-frequency odds updates, WebSocket data flows for time-sensitive screens, and UI tuned for fast-changing data.

  • WebSocket
  • real-time UI
  • performance
RIA.comiOS · 2017–18Car and real-estate marketplaces in Ukraine.

$ cat commercial/ria-com/README.md

Large Ukrainian marketplaces for cars and real estate. Built features for high-volume listings and search-heavy flows: search and filtering, plus work on push notifications.

  • search & filtering
  • push notifications
  • marketplaces

indie/ 6 · products I own, built and shipped solo

Screenshot Studioopen source · 2026App Store screenshots as code.

$ cat indie/screenshot-studio/README.md

problem
Store screenshots for App Store, Google Play and Microsoft Store, across locales, RTL and exact device sizes.
my call
Code-first and local-first: the visual editor and the CLI share one renderer, a whole campaign lives in one git-tracked JSON file, and the tool is built to be driven by AI coding agents.
result
The preview matches the exact-size export; covered by Playwright end-to-end tests and GitHub Actions CI.
  • TypeScript
  • Next.js
  • Konva
  • Playwright
  • GitHub Actions
github ↗
macupopen source · 2026One-command Mac upkeep for developers.

$ cat indie/macup/README.md

problem
Keeping a developer Mac updated, clean and healthy takes a pile of separate commands.
my call
One command: toolchain updates (Homebrew, npm, Claude Code), safe cleanup of rebuildable caches, health and security checks.
result
One-script install on a new Mac, trend reports, a selectable interface language.
  • Shell
  • Homebrew
  • CLI
github ↗
iStringmacOS · freeLocalization manager for Apple developers.

$ cat indie/istring/README.md

A Mac app for managing iOS and macOS localization. Free on the Mac App Store since 2018; latest release July 2025.

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

$ cat indie/giftify/README.md

A video-to-GIF converter for the Mac. A paid Mac App Store app since 2019, built and maintained solo.

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

$ cat indie/tiksaverlite/README.md

Designed, built and released solo, monetized with StoreKit subscriptions. On the App Store since 2023; latest release October 2026.

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

$ cat indie/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 · 17 lines
  1. # Vitalii Lavreniuk
  3. Software engineer who ships products. 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
  14. ## off-screen
  15. - off the keyboard: sport, the gym, travel and creative projects
  16. - had to leave Ukraine; now starting over, on my own terms
  17. - want to build things that are fun to make and make the world better

04 / man

$man vitalii

How to work with me. Pick a flag.

VITALII(1)General Commands Manual
NAME
vitalii — builds products end to end, iOS first
SYNOPSIS
vitalii [--cofounder | --startup | --lead]
DESCRIPTION
Takes a product from an empty repo to the App Store: the architecture, the first release and the years of updates after it. Has done it with a team (MISTO, three awards) and solo (own apps live since 2018). iOS is home, macOS next to it; web, CLI, Android or cross-platform when the product needs them, built AI-assisted.
OPTIONS
--cofounder
co-owner or partner: product, architecture, the first release. Any domain — it depends on what we build.
--startup
first or early engineer: from MVP to launch, then iterate.
--lead
iOS lead in a large product: architecture, code review, mentoring.
REVIEWS

“Vitalii delivered several critical features for our product, always balancing performance with maintainability.”

— Oleks Maistrenko, CTO at MISTO, managed Vitalii directly

“What stood out most was his ability to make decisions quickly without sacrificing quality or consideration — he evaluates options, asks the right questions, and moves forward confidently.”

— Denys Zabrodko, Senior iOS Engineer / iOS Tech Lead, same team

“Communication with him is always easy, constructive and transparent — he is able to clearly formulate thoughts, is open to discussions and quickly finds a common language with the team and stakeholders.”

— Natalia Orykhivska (Ivashchyshyn), Senior Recruitment Specialist at StartupSoft, different teams
SEE ALSO
./work, ./log, ./contact

05 / contact

say hi

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

lavreniuk.vitalii@gmail.com