Mysten Labs

Security Engineer

• Maintain and improve the custody systems that hold validator keys, operational keys, and important objects for Mysten-run smart contracts and general on-chain operations, including key generation, storage, access controls, signing workflows, aggregation, rotation, and recovery procedures
• Harden the signing path end-to-end: review and improve the code, infrastructure, and operational practices around how transactions are authorized, reviewed, and submitted on-chain
• Build and improve anti-scam and anti-abuse tooling for the Sui ecosystem, detecting phishing sites, malicious dApps, drainer contracts, and other threats that target Sui users, and partnering with wallet ecosystem teams on mitigations.
• Conduct code and design reviews of components that interact with sensitive keys or handle on-chain assets, with a focus on cryptographic correctness, access control, and operational safety
• Participate in investigation and response for security issues and incidents that touch custody or ecosystem abuse, and drive concrete fixes that prevent the same class of issue from recurring

Engineer

• Design, implement, and maintain Walrus core, including storage node, client software, smart contracts and toolchains that power Walrus and its infrastructure.
• Work closely with the research, cryptography, production, security teams, and Sui core teams, to keep the Walrus network secure, performant, and reliable.
• Optimize existing systems for scalability, efficiency, and reliability.
• Collaborate with other teams at Mysten Labs to integrate new features and technologies.

Security Engineer

Senior Core Engineer