ethenalabs - Ethena Labs - Staff/Senior Security Engineer
Requirements
• Mastery of Solidity and the EVM; you can read arbitrary contracts and raw calldata without assistance. You are fluent in tools such as Tenderly, Foundry-based simulation, and trace analysis. • Deep practical experience with Gnosis Safe, Coinbase Prime, Anchorage, and Fireblocks. Strong understanding of the operational failure modes inherent in browser-based custodian extensions and hardware wallet signing flows. • Strong practitioner-level knowledge of DeFi protocols like Aave, Morpho, and Stargate. You understand risk parameters, oracle structures, and bridge message-passing mechanics. • A security-first mindset that assumes a hostile environment by default. You possess a "vigilance disposition" - you are energized by rigorous verification and are committed to maintaining safety standards even when facing operational pressure. • Proven ability to explain technical risks to non-technical stakeholders (COO team, executives, auditors). You are a self-starter comfortable owning infrastructure end-to-end and producing high-quality, audit-grade documentation.
Responsibilities
• Own the end-to-end design of our signing regime, including signer composition, thresholds, and intent communication, and continue evolving our pre-signature verification workflows for destination, calldata, and state-change confirmation. • Manage, maintain and continuously upgrade canonical address and contract allowlist system and infra that manages it, ensuring every whitelisting or approval action is checked against this list pre-signature, requiring documented review for any additions. • Operate and tighten real-time monitoring across wallets, custodians, and DeFi positions, keep it integrated with our SOC 2 incident-response workflows, and contribute to playbooks for evolving risk scenarios. • Run independent technical reviews of new protocol integrations and keep our risk register current as positions and dependencies evolve. • Continuously verify ERC-20 approval hygiene across the treasury, and partner with Finance on automated reconciliation between on-chain activity and accounting systems. • Own the process of producing the documentation of controls, tooling, and decisions that our auditors, underwriters, and institutional counterparties expect.
Benefits
• You'd be joining a group that has well established itself as one of the most successful crypto-native company's of all time, a group with a mission to revolutionise decentralised finance and it's position in global finance. • Work alongside a passionate and innovative team that values collaboration and creativity. • Enjoy a flexible, remote-friendly work environment with established opportunities for personal growth and learning. • We look forward to receiving your application and will be in touch after having a chance to review. • In the meantime, here are some links to more information about Ethena Labs to help you check us out:
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