Senior Mobile Engineer - React Native, Real-Time Chat

OnSite; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

OnSite is building an intelligent work chat platform for field teams in Singapore. We’re solving real coordination challenges by combining human work with AI to track projects, report progress, and plan effectively.

We’re looking for a mid-to-senior mobile developer with deep React Native experience and hands-on native development on iOS or Android. You’ll own mobile features end to end and ship reliable releases in a fast, collaborative environment.

Qualifications

• Deep React Native experience with production apps.
• Experience across React Native and native layers (iOS/Android).
• Ability to own features from implementation through release.

Responsibilities

• Build a polished mobile experience in React Native with cross‑platform consistency.
• Make real‑time communication dependable: notifications, media uploads, connectivity handling.
• Work across native layers: integrate native SDKs and extend modules.
• Keep the app fast and stable: profile crashes, rendering, memory usage.
• Own features through release: coordinate with backend, design, and QA for releases.
• Improve foundations: enhance mobile architecture, testing, and tooling as product grows.

Skills

React Native

Mobile development

iOS

Android

Job description

OnSite is building an intelligent work chat platform for field teams in Singapore. We’re solving real coordination challenges by combining human work with AI to track projects, report progress, and plan effectively.

We’re looking for a mid-to-senior mobile developer with deep React Native experience and hands-on native development on iOS or Android. You’ll own mobile features end to end and ship reliable releases in a fast, collaborative environment.