Job Description:
Frontend (Mobile | Supportive Responsibilities)
- Develop and maintain iOS/Android applications using React Native
- Encapsulate on-chain interaction processes into clear and stable mobile experiences
- Integrate with backend APIs, wallets, and transaction states
- Collaborate with product teams to lower the barrier of entry for Web3 usage
- Optimize performance, cost, and user experience while ensuring security
Tech Stack:
- Mobile: React Native (Expo), TypeScript
- Backend: Node.js (TypeScript), Nest.js
- Blockchain: Multi-chain environment including EVM, Solana, and others
- Integrations: Key management, fiat on/off-ramps, various DeFi protocols, RPC providers, indexers
Key Responsibilities:
- Develop and maintain mobile applications using React Native
- Design and implement secure blockchain interactions
- Collaborate with cross-functional teams to deliver seamless Web3 experiences
- Troubleshoot and optimize application performance
- Stay updated with emerging blockchain technologies and integrate them when appropriate
Job Requirements:
Required Skills (Web3 Integration Focus):
- Hands-on experience with Web3 application backend development
- Familiarity with EVM/Solana smart contract interaction patterns (ABI, events, logs, transaction parameters)
- Understanding of RPC/Node/Provider usage and limitations
- Practical experience with indexers, event monitoring, and data synchronization
- Knowledge of transaction confirmation, rollback, replay, and failure scenarios
- Awareness of security risks (replay attacks, authorization, private keys, signatures)
Technical Competencies:
- Proficiency in TypeScript/JavaScript
- Experience with common Web3 SDKs (ethers.js, web3.js, etc.)
- Backend system design and API development experience
- Ability to independently troubleshoot on-chain and off-chain issues
Frontend Skills (Essential but Non-Core):
- Practical React Native project experience
- Capability to develop and integrate basic mobile functionalities
Bonus Qualifications:
- Knowledge of AA/Paymaster/Relayer/Batch Tx
- Experience with high-concurrency or high-volume Web3 applications
- Background in finance, payment, or wallet-related products
- Startup or 0→1 product development experience
Work Approach:
- Engineering pragmatism with focus on implementation
- Emphasis on stability, security, and user experience
- Ability to drive projects forward with ambiguous requirements
- Skill in abstracting complex systems into usable modules
- Proficiency in using AI tools to enhance efficiency
- Capability to deliver high-quality work rapidly
Benefits:
Why Join Us:
- Focus on real-user products rather than "concept chains"
- Deep involvement in Web3 application architecture design
- Significant impact on product experience and system reliability
- Small team with high responsibility and low political overhead
- Competitive compensation and long-term incentives
Interested?
Let's talk. Please send your GitHub or portfolio along with a brief note about the most challenging third-party protocol or wallet SDK you've integrated.
