Frontend Engineer — React Native (Expo / JSI) (Contract to Hire)

We're looking for a Frontend Engineer to take ownership of our React Native/Expo mobile app, with a focus on the native layer — JSI, native modules, and the boundary between JavaScript and platform code. You'll work on the surfaces employees rely on every shift: push notifications, offline-tolerant scheduling views, check-in/out, and chat — and you'll be the person who steps in when a bug lives below the JS bridge.

This is a startup role. We're looking for someone who can take a loosely-defined problem, figure out the right approach with minimal hand-holding, and drive it to done. You'll get real ownership and real ambiguity — ideally at the same time.

• Build and maintain features in our Expo/React Native app (ando-employee-mobile), from UI down to native module integration.
• Write and debug JSI/TurboModule and native module code (iOS/Android) where Expo's managed APIs aren't enough.
• AI-assisted engineering: You use AI agents (Claude, MCP-based tooling) as a core part of your daily workflow for writing, debugging and testing code - this isn’t optional tooling, it’s how the team works.
• Own performance-sensitive flows — list rendering, animations, cold-start time — and profile/fix issues at the native bridge layer.
• Implement and harden push notifications (expo-notifications), deep linking, and background/foreground behavior, including cold-start deep links into chat.
• Manage Expo SDK upgrades and native dependency compatibility (e.g., RCTModuleProvider / native module conformance issues).
• Maintain EAS build and CI/CD workflows, including automated test pipelines in EAS Workflows.
• Write Jest/React Native Testing Library coverage for hooks, screens, and native module wrappers.
• Triage and resolve crash and stability issues surfaced through Sentry.
• Collaborate with backend engineers on the mobile-facing REST/OpenAPI contract and with design on native-feeling UI patterns — often starting from only a rough spec.

• 4+ years of professional React Native experience, including apps built or ejected from Expo (bare workflow, config plugins, or EAS Build).
• Hands-on experience with JSI, TurboModules, or writing native modules in Swift/Objective-C and Kotlin/Java.
• Strong TypeScript and React fundamentals; comfort debugging across the JS/native boundary (Xcode, Android Studio, Flipper/React Native DevTools).
• Experience with push notification systems, deep linking, and background task handling on iOS and Android.
• Familiarity with mobile CI/CD (EAS Workflows, Fastlane, or similar) and app store release processes.