Staff/Senior Security Engineer - DeFi
TLDR
Lead the security program for wallets and custodian accounts, ensuring a high-impact verification layer in complex on-chain environments for a mission-critical role.
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.
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.
Why Ethena Labs?
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.
If you subscribe to the mission of separating the dollar from the state, then we want to hear from you!
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:
Ethena Labs is focused on creating innovative digital dollar products that bridge traditional finance and the internet era. Their key offerings include a synthetic dollar and a fiat-backed stablecoin developed in collaboration with BlackRock, setting a new standard for how digital assets can operate in the financial ecosystem.