React Native Developer (Web3 / Crypto)
Build high-quality, scalable iOS and Android mobile apps with React Native that integrate Web3/crypto features — wallet connections, transaction signing, and blockchain interactions — collaborating with backend and smart-contract teams. Core stack: React Native, JavaScript/TypeScript, Web3 wallets (MetaMask, WalletConnect, Phantom), and chains like Ethereum, Polygon, and Solana.
- Compensation
- Not disclosed
- Location
- Uruguay
- Work setup
- Remote
- Seniority
- Not specified
- Employment
- Contract
- Experience
- Not specified
- Category
- Mobile
- Posted
Skills
Must have
- Strong experience with React Native for mobile development
- Solid knowledge of JavaScript and TypeScript
- Proven experience building Web3 / Crypto applications
- Hands-on experience with wallet integrations (e.g. MetaMask, WalletConnect, Phantom or similar)
- Experience interacting with blockchains (e.g. Ethereum, Polygon, Solana, or similar)
- Strong experience working with third-party libraries and debugging dependency conflicts
- Understanding of REST APIs, request/response models, and offline storage
- Familiarity with mobile security best practices, especially in crypto-related apps
Nice to have
- Experience with smart contracts or the ability to read and understand them
- Knowledge of ethers.js, web3.js, or similar libraries
- Experience with mobile security, encryption, or key management
- Previous experience in Web3 startups or crypto products
Full description
We are looking for a React Native Developer with strong experience in Web3 / Crypto to build high-quality mobile applications for iOS and Android.
You will be responsible for architecting and developing mobile products that integrate blockchain-based technologies, working closely with product, backend, and blockchain teams. This role requires hands-on experience with Web3 concepts, wallets, and decentralized application flows.
Building a product is a highly collaborative effort, so we are looking for someone proactive, detail-oriented, and comfortable working in fast-moving Web3 environments.
Responsibilities
- Build pixel-perfect, smooth, and responsive mobile UIs using React Native.
- Architect and develop scalable mobile applications for iOS and Android.
- Integrate Web3 / Crypto features such as wallet connections, transaction signing, and blockchain interactions.
- Work with blockchain SDKs, Web3 providers, and third-party libraries.
- Collaborate with backend and smart contract teams to integrate APIs and on-chain logic.
- Diagnose and fix bugs and performance bottlenecks to ensure a native-like experience.
- Maintain clean, well-documented code and write automated tests.
- Stay up to date with React Native and Web3 ecosystem changes and best practices.
Required Skills
- Strong experience with React Native for mobile development.
- Solid knowledge of JavaScript and TypeScript.
- Proven experience building Web3 / Crypto applications.
- Hands-on experience with wallet integrations (e.g. MetaMask, WalletConnect, Phantom or similar).
- Experience interacting with blockchains (e.g. Ethereum, Polygon, Solana, or similar).
- Strong experience working with third-party libraries and debugging dependency conflicts.
- Understanding of REST APIs, request/response models, and offline storage.
- Familiarity with mobile security best practices, especially in crypto-related apps.
Nice to have
- Experience with smart contracts or the ability to read and understand them.
- Knowledge of ethers.js, web3.js, or similar libraries.
- Experience with mobile security, encryption, or key management.