Senior Software Engineer/Tech Lead Web3 Initiatives (NodeJS-focused)
Skills
About the Role
You will own web3 capabilities and lead wallet infrastructure discovery and development, shaping how blockchain technology is integrated into financial products. You will design and deploy production-grade smart contracts across Solana and Ethereum, build backend services in Node.js/TypeScript to support on-chain functionality, collaborate with product and business stakeholders to turn ideas into secure implementations, drive architecture decisions, participate in code reviews and security audits, and leverage AI tools to improve engineering efficiency.
Requirements
- 5-8+ years in software development with backend engineering experience in Node.js and TypeScript
- Experience with cloud infrastructure such as AWS
- 3+ years building smart contracts on Solana (Rust) or Ethereum (Solidity) with strong expertise in at least one
- Experience building wallet infrastructure including hot and cold wallets
- Strong product sense and end-to-end ownership of technical initiatives
- Demonstrated use of AI tools to boost development efficiency
- Clear communication, collaboration, and commitment to code quality
- Fintech or payments experience is ideal
- Experience with DeFi protocols, cross-chain integrations, or account abstraction (nice to have)
- Knowledge of card issuance, stablecoin payments, or finance systems (nice to have)
- Startup experience where multiple roles were required (nice to have)
Responsibilities
- Design and deploy production-grade smart contracts across multiple blockchains
- Own CaaS web3 capabilities and build secure scalable blockchain systems for card-as-a-service and asset management
- Lead wallet infrastructure discovery and development and architect wallet solutions
- Build backend services in Node.js and TypeScript to support on-chain functionality
- Collaborate with product and business teams to translate ideas into secure technical execution
- Contribute to architecture decisions, code reviews, and security audits
- Leverage AI tools and modern development practices to drive engineering efficiency
Benefits
- Insurance coverage after probation
- Reap Card stipend
- Use of AI tools at work
- Flexible hybrid work environment