React Native Developer (Web3 / Crypto)
Confirmed on the employer's own hiring board on Sep 26, 2026. First seen by Alion on Sep 26, 2026.
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.
Previous experience in Web3 startups or crypto products.
SpacePerks
20 days of vacation from day one + 3 company-wide days off per year
Access to Udemy and other learning platforms as part of your development plan
DEC Institute certification “Chartered Blockchain Analyst” with a 50% discount
English classes at different levels
Flexible schedule and autonomy
Day off and gift for birthdays and special dates
Team trips and tech events
Performance and/or inflation adjustments 1-2 times per year
Remote-first culture, with optional coworking and an office in Montevideo
4 sessions with a psychologist or career coach
Equipment financing
Long-term retention plan and career growth opportunities
If you’re excited about building Web3 products and want to be part of a team shaping the future of decentralized technology, apply and join us. We’re looking forward to meeting you.