Senior Engineer, Custody Engineering (Tokenization)

Skills

About the Role

You will drive tokenization features from concept through deployment and scale the digital asset architecture. You will own the technical execution for the digital asset lifecycle including issuance, controlled transfer and on chain verification. You will design, implement and test the smart contracts that hold customer assets and coordinate the audit process end to end. You will build and maintain the off chain integration layer with secure, reliable communication between the blockchain and internal systems. You will collaborate with product and compliance teams to translate cryptographic and security requirements into engineering solutions.

Requirements

• 5+ years of software engineering experience delivering complex systems in production.
• Expert level fluency in secure public chain smart contract development such as Solidity and the Ethereum Virtual Machine (EVM), with command of industry-standard security frameworks and libraries such as OpenZeppelin.
• Strong command of TypeScript for backend development, API integration, and building off chain indexing services.
• Hands-on experience with modern Web3 development tooling such as Foundry or Hardhat, and integration libraries such as Viem or Ethers.js.
• Expert level knowledge of smart contract token standards and the surrounding ecosystem's intricacies.
• A paranoid security mindset, with proven expertise preventing and mitigating common smart contract vulnerability patterns (re-entrancy, oracle manipulation, access control flaws) and managing the audit process.
• The ability to communicate protocol logic and security trade-offs to both technical and non-technical stakeholders across global teams.
• Degree in Computer Science, Engineering, or a related technical field (or equivalent professional experience).

Responsibilities

• Drive tokenization features from concept through deployment, scaling the digital asset architecture against established industry standards.
• Own the technical execution for the digital asset lifecycle, including issuance, controlled transfer, and on chain verification.
• Lead the design, implementation, and testing of the smart contracts that hold customer assets, coordinating the audit process end-to-end.
• Build and maintain the off chain integration layer, with secure, reliable communication between the blockchain and internal systems.
• Partner with product and operational compliance teams to translate cryptographic and security requirements into engineering solutions.