React native developer (IOS and Android) - £425 outside IR35 - 100% remote

Exalto Consulting; City Of London; Remote; GBP 67,000 - 90,000; Full time

Job summary

Exalto Consulting is seeking a contract React Native Developer (iOS and Android) for an initial 3-month engagement, outside IR35, with 100% remote work. You will be responsible for building and shipping mobile apps using React Native, Expo, and TypeScript, including offline-first data handling and store publishing.

The role requires hands-on experience with expo-sqlite/WatermelonDB/Realm/MMKV, state management (Redux Toolkit/Zustand/TanStack Query), and strong API typing.

Qualifications

• Hands-on experience shipping React Native apps.
• Experience with Expo and OTA updates.
• Strong TypeScript skills and API typing.
• Experience with offline-first data handling.
• Experience publishing to App Store and Google Play.

Responsibilities

• Develop mobile apps using React Native for iOS and Android.
• Implement offline-first data syncing and conflict resolution.
• Integrate local databases (expo-sqlite, WatermelonDB, Realm, MMKV).
• Collaborate with backend and QA to ship features.
• Publish apps to stores and manage builds.

Skills

React Native

Expo

TypeScript

Offline-first

Data sync

Redux Toolkit

Zustand

TanStack Query

App Store publishing

expo-sqlite

Tools

WatermelonDB

Realm

MMKV

Job description

React native developer (IOS and Android) - £425 outside IR35 - 100% remote - 3 months initially

Exalto consulting are currently recruiting for a contract React Native Developer this is initially 3 months but likely to extend due to workload, outside IR35 paying £425 per day and 100% remote

Essential Skills and Experience

• mobile development experience, with React Native.
• Hands-on experience building and shipping apps with Expo.
• Strong TypeScript skills, including typing data models, API contracts, and application state.
• Proven experience building offline-capable or offline-first mobile apps, with examples you can talk through in detail.
• Experience with on-device databases and storage such as expo-sqlite, WatermelonDB, Realm, or MMKV.
• Experience implementing request queuing, retry logic, and background or reconnect-triggered sync.
• Understanding of data sync challenges, including conflict resolution strategies, idempotent requests, and data consistency.
• Experience with data-fetching and state tools (e.g. TanStack Query with persistence, Redux Toolkit, Zustand).
• Experience publishing apps to both the App Store and Google Play.