React Native Developer (Web3 / Crypto)

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.