Senior Mobile Engineer - Real-Time Trading (React Native)

Onyx is hiring a Mobile Engineer to build the primary way customers experience Onyx. The role focuses on a React Native stack (Expo, TypeScript) with backend support via Node.js, PostgreSQL, and AWS.You will own key product areas, influence mobile architecture, and ship to a growing audience on iOS and Android. You will collaborate with product, design, backend, data, and trading teams to deliver fast, intuitive, and reliable mobile trading experiences, with opportunities to expand