Frontend Engineer — React Native (Expo / JSI) (Contract to Hire)
- Role
- Frontend
- Experience
- Senior
- Employment
- Contract
- Company size
- Startup
Open to US only. Set where you work from to check your eligibility.
No BS summary
React Native Frontend Engineer with 4+ years of experience, focusing on the native layer (JSI, native modules) of Expo apps. Must be comfortable with TypeScript, debugging across JS/native boundaries, and have experience with push notifications and background tasks. Startup mindset and self-starter attitude required.
Core skills
Required skills
Optional skills
Required languages
ABOUT ANDO
Ando is building AI-native workforce infrastructure for the 80M hourly workers in the U.S. and hundreds of millions globally.
Labor is the last broken supply chain. Forecasting, allocation, and professional identity remain fragmented across static tools and manual decision-making. Ando is rebuilding this system from first principles.
We start with highly accurate AI-generated demand forecasts, move to allocation-first labor optimization, and compound value through a persistent labor graph that captures skills, reliability, availability, and performance across time and employers. Over time, this becomes a professional identity layer and intelligent system serving both enterprises and frontline workers.
Ando is a Seed-stage company backed by Slow Ventures and experienced operators. We are live with real customers and entering a phase where architectural clarity, learning loops, and AI systems quality are foundational to long-term success.
ABOUT THE ROLE
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.
WHAT YOU'LL DO
- 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.
WHAT WE'RE LOOKING FOR
- 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.
- Startup mindset: A self-starter who works well independently and is genuinely comfortable with ambiguity — you don't need a fully-scoped ticket to make progress, and you're willing to make a call and adjust rather than wait for perfect clarity.
- Practical testing instincts — Jest, React Native Testing Library, and a bias toward catching regressions before they ship.
- Comfortable working from a REST/OpenAPI contract shared with a Python/FastAPI backend and a Next.js web app.
NICE TO HAVE
- Experience with Reanimated, Skia, or other native-driven animation libraries.
- Experience instrumenting and triaging crash/performance data in Sentry or similar tools.
- Familiarity with Next.js/React/TypeScript for occasional cross-platform (web) contributions.
- Background building consumer or field-worker apps at meaningful scale.
- Prior experience at an early-stage startup, where you owned a surface end-to-end with little existing precedent.
OUR STACK
Mobile: Expo (SDK 57), React Native, TypeScript, JSI/TurboModules · Backend: Python, FastAPI, PostgreSQL · Web: Next.js 15, React 19, TypeScript · Infra: AWS, EAS Build/Workflows, Sentry · Testing/CI: Jest, GitHub Actions, EAS test pipelines
CULTURE AT ANDO
Ando is a high-trust, high-care organization built on ownership, respect, and thoughtful collaboration.
We value diverse perspectives, clear communication, and personal accountability. We move fast through alignment rather than force, operate comfortably in ambiguity, and build with empathy for the enterprises and workers our systems serve.
These values are core to how we work. Candidates who share them tend to thrive at Ando.
EQUAL EMPLOYMENT OPPORTUNITY, DEI & LEGAL NOTICE
Ando Technologies, Inc. is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other legally protected status.
And yes, we are proudly DEI. We believe diverse perspectives make teams stronger, systems smarter, and outcomes more equitable. Building infrastructure for the frontline workforce demands empathy, representation, and respect, and we take that responsibility seriously. These values are core to how we work. Candidates who share them tend to thrive at Ando.
By applying for this role, you acknowledge that any information you provide will be processed in accordance with Ando’s privacy practices and applicable data protection laws. Applicant information is used solely for recruiting and employment-related purposes. Submission of an application does not create an employment contract or guarantee of employment.
What you'll do
- 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.
What they require
- 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.
- Startup mindset: A self-starter who works well independently and is genuinely comfortable with ambiguity — you don't need a fully-scoped ticket to make progress, and you're willing to make a call and adjust rather than wait for perfect clarity.
- Practical testing instincts — Jest, React Native Testing Library, and a bias toward catching regressions before they ship.
- Comfortable working from a REST/OpenAPI contract shared with a Python/FastAPI backend and a Next.js web app.
- Preferred: Experience with Reanimated, Skia, or other native-driven animation libraries.
- Preferred: Experience instrumenting and triaging crash/performance data in Sentry or similar tools.
- Preferred: Familiarity with Next.js/React/TypeScript for occasional cross-platform (web) contributions.
- Preferred: Background building consumer or field-worker apps at meaningful scale.
- Preferred: Prior experience at an early-stage startup, where you owned a surface end-to-end with little existing precedent.
Ando is building AI-native workforce infrastructure for hourly workers, starting with AI-generated demand forecasts, labor optimization, and a persistent labor graph for enterprises and frontline workers.