Full Stack JavaScript / Web3 Engineer and Team Lead with 15+ years of experience designing and architecting large-scale single-page and cross-platform applications in JavaScript/TypeScript. Strong front-end background with React and Next.js, plus production experience building mobile apps with React Native and Expo. Solid backend skills with Node.js and Nest.js for building APIs and integrations, and 3+ years in Web3 focusing on DeFi, ZKSync and other EVM-compatible networks and smart contract integration. More than 10 years in senior and lead roles, guiding engineering teams and owning delivery from requirements to production.
Experience: 11 years
Yearly salary: $100,000
Hourly rate: $50
Nationality: 🇺🇦 Ukraine
Residency: 🇬🇪 Georgia
Experience
Senior Web3 Mobile Developer, Team Leader
Sophon 2024 - 2025
Developed a gamified crypto card mobile app and web wallet for the Sophon L2 ecosystem using React Native (Expo), Next.js and Sophon Account SDK. Integrated wallet authentication, balances, transfers, NFT operations and quest-based user engagement. Designed and shipped production-ready app architecture with a typed API layer, i18n, OTA updates, analytics, CI/CD and app store releases. Mentored and led the React Native development team.
JavaScript and Web3 Developer, Tech Leader
Ondefy / Zyfi 2022 - 2024
Developed a comprehensive crypto platform leveraging ZKSync network paymasters to enable sponsored and 'gas-with-any-token' transactions. Integrated blockchain features with front-end supporting new token launches, including eligibility validation, token claiming, airdrop distribution and staking functionality.
Senior JavaScript Developer, Team Leader
DataArt Solutions, Inc. 2014 - 2022
Developed multiple projects with various frameworks (React, Vue, Angular, Express). Refactored app architectures and worked on the migration from monolith to monorepos and microservices. Supervised internal training courses on React.js and Node.js.
Senior Front-End Developer, Team Leader
PrivatBank 2013 - 2014
Built operational interfaces for issuing various types of credit cards. Mentoring development teams.
Full Stack Developer
Freelance 2010 - 2013
Worked as a full stack web master, creating SPAs for various clients using JavaScript and PHP.
Skills
drizzle
front-end
full-stack
javascript
nestjs
node
react
react-native
typescript
web3
