Smart Contract Engineer

You will be a senior contributor within our smart contract engineering team, working closely alongside other engineers, product partners, and stakeholders to build the core systems that power high-value decentralized financial applications. This includes work on stablecoin systems, liquidity infrastructure, and broader DeFi protocols, among other emerging on-chain financial products.

You’ll design secure, scalable, and composable smart contracts used in production environments, help shape protocol architecture, and ensure a consistently high standard of security, reliability, and performance across everything the team delivers. You’ll collaborate deeply within the team to bring new on-chain ideas from concept through deployment and continuous improvement.

• Contribute to the evolution of protocol architecture, contract design patterns, and security best practices
• Make thoughtful technical decisions around performance, composability, and risk

• Design, implement, and maintain advanced Solidity smart contracts using Foundry
• Build production-grade systems focused primarily on DeFi use cases and high-value financial logic
• Support deployment and lifecycle management across multiple networks

• Build comprehensive unit, integration, fuzzing, and fork testing suites
• Debug complex on-chain systems using traces, simulations, and low-level diagnostics
• Ship audit-ready, production-quality contracts that meet high security standards

Own and deliver end-to-end contract development work streams, including:

• Core protocol components and upgrades
• High-risk, security-sensitive financial logic
• Ongoing maintenance and improvements of deployed systems

• Work closely with Product and Backend engineering teams as an active team member to refine requirements and deliver outcomes
• Contribute to specifications, documentation, and team design discussions

• 4+ years of professional software engineering experience, with strong emphasis on prototyping and new product development
• 3-5+ years of Solidity development experience, with proven production delivery of audited smart contracts
• At least 2 mainnet deployments, ideally powering widely used or financially meaningful applications
• Extensive experience with EVM smart contracts and DeFi-centric development
• Strong proficiency with Foundry or similar frameworks
• Solid understanding of protocol mechanics, gas efficiency, performance, and security fundamentals
• Familiarity with common vulnerability classes and best-practice mitigations
• Proven ability to debug complex systems using traces and simulations
• Comfortable working collaboratively within a team in fast-moving and ambiguous environments
• Excellent written and verbal communication skills

• Experience participating in or responding to security audits; or writing audit-ready specs
• Experience working on stablecoin projects, with strong understanding of how pegs are designed and maintained; familiarity with other DeFi primitives such as lending or DEXs is a plus.
• Practical understanding of composability risks and protocol integrations
• Experience working on widely used protocols or infrastructure
• Startup or scale-up environment experience

East Asia preferred (Tokyo, Singapore, Hong Kong)