Frontend Engineer — React Native (Expo / JSI) (Contract to Hire)
Ando Technologies, Inc2 months ago
Remote, AmericasMid Level
Responsibilities
- Build and maintain features in the Expo/React Native employee mobile app from UI through native module integration.
- Write and debug JSI, TurboModule, and iOS/Android native module code where managed Expo APIs are insufficient.
- Use AI agents and MCP-based tooling as part of the daily engineering workflow for writing, debugging, and testing code.
- Own performance-sensitive flows including list rendering, animations, cold-start time, and native bridge profiling.
- Implement and harden push notifications, deep linking, and background/foreground behavior for iOS and Android.
- Manage Expo SDK upgrades and native dependency compatibility issues.
- Maintain EAS Build and CI/CD workflows, including automated test pipelines in EAS Workflows.
- Write Jest and 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 REST/OpenAPI contracts and with design on native-feeling UI patterns.
Requirements
- 4+ years of professional React Native experience, including apps built or ejected from Expo through bare workflow, config plugins, or EAS Build.
- Hands-on experience with JSI, TurboModules, or native modules written in Swift, Objective-C, Kotlin, or Java.
- Strong TypeScript and React fundamentals with the ability to debug across the JavaScript/native boundary using Xcode, Android Studio, Flipper, or React Native DevTools.
- Experience with push notifications, deep linking, and background task handling on iOS and Android.
- Familiarity with mobile CI/CD, including EAS Workflows, Fastlane, or similar tools, and app store release processes.
- Ability to work independently in an early-stage startup and make progress through ambiguity.
- Practical testing experience with Jest and React Native Testing Library.
- Comfort working from REST/OpenAPI contracts shared with Python/FastAPI backends and Next.js web applications.
- Preferred experience with Reanimated, Skia, or other native-driven animation libraries.
- Preferred experience instrumenting and triaging crash and performance data in Sentry or similar tools.
- Preferred familiarity with Next.js, React, and TypeScript for occasional web contributions.
- Consumer or field-worker app experience at meaningful scale and prior early-stage startup ownership are preferred.
Benefits
- Contract-to-hire position.
- High ownership and autonomy in a seed-stage startup environment.
- Work on employee-facing mobile experiences serving frontline workers.
Tech Stack
AWSFastAPIGitHub ActionsiOSJavaJestKotlinNext.jsObjective-CPostgreSQLPythonReact NativeSwiftTypeScript
Categories
Mobile
About Ando Technologies, Inc
Ando builds AI-powered workforce infrastructure that predicts demand, optimizes staffing, and generates reliable schedules for employers of hourly workers. Its SaaS platform includes manager tools and an employee mobile app, aimed at retailers, restaurants, and other frontline operations. Founded in 2023 and headquartered in San Francisco, the seed-stage company is backed by Slow Ventures and has live deployments with customers.