Senior Software Engineer and UX Designer, 12+ years. I build crypto wallets and trading apps end to end for iOS, Android and web — the design, the animation and the code underneath.
Most recently at Ava Labs, where I owned the shared screen and navigation framework behind Core Wallet's ground-up redesign and built its perpetuals trading experience end to end. Before that, founding engineer and UX designer at Ostium Labs, running Figma through to production code as one job.
TypeScript, React Native, Expo and React, with Reanimated and Skia for motion, and Figma for the design side.
Looking for senior mobile or frontend work on a wallet or trading product where design and engineering aren't separate roles.
Experience: 8 years
Yearly salary: $0
Hourly rate: $90
Nationality: 🇷🇴 Romania
Residency: 🇷🇴 Romania
Experience
Senior Mobile Engineer
Ava Labs 2024 - 2026
Owned the shared screen and navigation framework behind Core Wallet's ground-up redesign: collapsible headers, action sheets, the native-stack migration and edge-to-edge, with iOS 26 support on top. Held the line on pixel-level iOS/Android parity and animation performance, the layer every other feature was built on. Built the perpetuals trading experience end to end: markets, positions, deposit and withdraw, order placement with leverage, TP/SL, market and limit close, and cross vs isolated margin. Stack: TypeScript, React Native, Expo, Expo Router, Wagmi, Reanimated, Skia, React Query.
Founding Engineer, UX Designer
Ostium Labs 2022 - 2024
Led end-to-end development of the application, independently managing design, frontend, backend and deployment. Ran design and engineering as one job: Figma through to production code, with competitor research and internal A/B tests feeding back into the design system. Worked alongside the blockchain team to turn margin, funding and liquidation into states a trader could read at a glance. Stack: TypeScript, React, React Native (Web), Styled Components, CodePush, Webpack, Figma.
Senior Frontend / Mobile Engineer
Koodos 2021 - 2022
Re-architected the ageing web app into one React Native codebase serving web, iOS and Android, so a feature shipped once instead of three times. Wired up the content integrations a shelf is built from, pulling what someone listens to and saves into a single feed. Ran the design system through internal A/B testing with the design team and fed the results back into the shared components. Stack: TypeScript, React, React Native (Web), Styled Components, CodePush, Webpack, Figma.
Senior Mobile Engineer
Innobyte 2020 - 2021
Built the EV trip planner: vehicle profile, start and end range, and a route across Europe that places the charging stops and shows how long each one takes. Made the product white-label, with theme, feature set and vehicle catalogue resolved per manufacturer from one codebase. Kept the charger map responsive with thousands of stations on screen, clustering them so panning and zooming stay smooth. Stack: TypeScript, React Native, Expo, Apollo, GraphQL, Styled Components, Sketch.
Senior Frontend / Mobile Engineer
Xedia Networks 2019 - 2020
Shipped the shared team inbox on iOS, Android and web from one codebase, with threads, assignment, archive and private notes. Built picture messaging and the segment counter that shows what a text will cost before it is sent. Moved releases over the air with CodePush, taking store review out of the loop for fixes. Stack: TypeScript, React, React Native (Web), CodePush, Styled Components, Expo, Sketch.
Senior Mobile Engineer
TokenPay 2018 - 2019
Built wallet creation, recovery and import, alongside send, receive and transaction history for the TPAY chain. Shipped the security centre, with PIN, biometrics and passphrase backup, written for people holding crypto for the first time. Established the coding and tooling conventions the mobile codebase was built on. Stack: TypeScript, React Native, React, Laravel, SCSS, CodePush, Styled Components.
Skills
design
front-end
mobile
nextjs
react
react-native
typescript
ui-ux-designer
web3
