Mobile Engineer — React Native & Expo (Real-Time Platform)

Onyx Odds; New York (NY); Hybrid; USD 110,000 - 180,000; Full time

Job summary

Onyx Odds is building a consumer trading platform in NoHo, NYC. We seek a Mobile Engineer with strong production experience in React Native, Expo, and TypeScript to build and scale the mobile experience for iOS and Android.

You will own features from concept through release, collaborating with Product, Design, Backend Engineering, and Infrastructure to deliver new functionality, optimize performance, and ensure a high-quality consumer experience in a fast-moving startup.

Qualifications

• 2+ years of professional mobile engineering experience.
• Strong production experience with React Native, Expo, and TypeScript.
• Expo experience is required and non-negotiable.

Responsibilities

• Build and scale mobile applications using React Native, Expo, and TypeScript.
• Develop polished, performant user experiences across iOS and Android.
• Own features from design through deployment and monitoring.
• Manage builds, releases, and over-the-air updates using EAS.

Skills

React Native

Expo

TypeScript

Mobile architecture

Release management

Tools

EAS Build

EAS Submit

Expo Updates

Job description

Onyx Odds is building a consumer trading platform in NoHo, NYC. We seek a Mobile Engineer with strong production experience in React Native, Expo, and TypeScript to build and scale the mobile experience for iOS and Android.

You will own features from concept through release, collaborating with Product, Design, Backend Engineering, and Infrastructure to deliver new functionality, optimize performance, and ensure a high-quality consumer experience in a fast-moving startup.