Hi, I'm Vadym
Senior Full-stack Engineer with 8+ years of experience. I build mobile apps, web tools and backend services, React Native first and TypeScript end to end.
About Me
I'm a full-stack engineer from Ukraine with 8+ years of experience. I started in mobile and still ship React Native, but these days I work across the whole product: mobile apps, backend services and internal web tools.
Strong native background: Java, Kotlin, Swift and Objective-C for custom native modules and deep platform integration.
On the backend I work with Node.js, TypeScript and PostgreSQL, building APIs, async workflows and financial operations for a fintech investment platform.
Experienced in CI/CD for mobile and backend, from GitHub Actions and Fastlane to App Store and Google Play releases.
I use AI coding agents daily and write the instructions and skills that make them effective on a large codebase.
Besides work, I'm passionate about open-source and Ukrainian game localization.
Core Technologies
Mobile
Web
Backend
DevOps
Experience
Shares
Senior Full-stack Engineer
Working on a fintech investment platform: B2C and B2B mobile apps, backend services and back-office tools.
- React Native apps: product features, performance, security and mobile CI/CD.
- Node.js and PostgreSQL backend for investment operations: corporate actions, ledger accounting, broker and custodian integrations.
- React back-office tools for the operations team.
Mobile Developer
Various Companies & Freelance
Worked on multiple React Native projects for startups and established companies. Built mobile apps from scratch, implemented complex features, and maintained legacy codebases. Gained expertise in native modules, third-party integrations, and mobile-first architecture.
Open Source & Projects
LBK Launcher
Ukrainian Game Localizer
Desktop application for installing Ukrainian translations in games. Automatic game detection, Steam Deck support, dark and light themes.
react-native-file-viewer-turbo
Native File Viewer for React Native
A maintained fork of react-native-file-viewer with TurboModules and Expo support. Uses QuickLook on iOS and ACTION_VIEW intent on Android. New Architecture only.
Hytale Server
Game Server
Personal Hytale game server hosted at play.vadko.dev. A place for friends and community to play together.
Contact
Interested in working together? I'm open to full-stack and React Native projects. Drop me a message.
vadkointel@icloud.com