About the Role

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.

Key Responsibilities

Protocol Architecture & Technical Contributions

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

Smart Contract Development

• 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

Security, Testing & Reliability

• 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

Ownership & Execution

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

Collaboration

• 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

Qualifications

Required Experience

• 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

Nice to Have

• 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

Location and Logistics

East Asia preferred (Tokyo, Singapore, Hong Kong)