2 hours ago
Remote, TaiwanSenior
Responsibilities
- Design and implement production-grade smart contracts across EVM and Solana ecosystems using Solidity and/or Rust.
- Develop backend services and integration layers that interface with deployed smart contracts and internal systems.
- Research and apply smart contract and distributed systems design patterns and emerging best practices.
- Optimize contract performance and gas efficiency while applying secure architecture and defensive coding practices.
- Build and maintain transaction orchestration flows, event listeners, and indexing services connecting on-chain and off-chain components.
- Test, deploy, and manage production upgrades for smart contracts and backend services.
- Partner with security teams on audits, threat modeling, remediation, and production monitoring.
Requirements
- Proven experience designing and developing production-grade smart contracts in Solidity and/or Rust, with emphasis on security, gas optimization, and performance.
- Deep understanding of blockchain architecture, EIP standards, decentralized systems, and on-chain execution models.
- Strong knowledge of smart contract security principles and common vulnerabilities such as reentrancy, access-control flaws, and arithmetic errors.
- Experience with smart contract development and testing frameworks such as Foundry, Hardhat, or Anchor.
- Working knowledge of backend development involving blockchain transaction submission, event processing, and indexing.
- Experience integrating smart contracts with backend systems and off-chain infrastructure.
- Experience designing and deploying production-grade, scalable cloud services in AWS, Google Cloud, Microsoft Azure, or similar environments.
- Strong cross-functional collaboration skills with product, infrastructure, and security teams.
- Preferred: experience shipping or operating multi-chain or cross-chain smart contract systems, Web3 fintech or DeFi experience, open-source smart contract or blockchain protocol contributions or audits, and experience developing contracts for non-EVM chains.
Benefits
- Remote work is indicated by the #LI-Remote designation.
- Circle provides an inclusive work environment and equal employment opportunity.
- Interview accommodations and assistance are available for candidates with disabilities.
