Staff/Senior Security Engineer - DeFi
Core
Lead the signing and treasury security program for wallets and custodian accounts, verifying on-chain transactions and managing security controls for a synthetic dollar product.
Role type
Staff/Senior Security Engineer (DeFi)
Builds
Secure signing regimes, verification workflows, and audit-grade documentation for institutional DeFi operations.
Domain
Decentralized Finance (DeFi), Cryptocurrency, Digital Assets
Required skills
Solidity, EVM, Tenderly, Foundry, Gnosis Safe, Coinbase Prime, Anchorage, Fireblocks, DeFi protocol mechanics, on-chain verification, risk parameter analysis
Preferred skills
Browser-based custodian extension security, hardware wallet signing flows, ERC-20 approval hygiene, automated reconciliation, audit-grade documentation
Technologies
Solidity, EVM, Tenderly, Foundry, Gnosis Safe, Coinbase Prime, Anchorage, Fireblocks, Aave, Morpho, Stargate
Responsibilities
Design end-to-end signing regimes including signer composition and intent communication; manage and upgrade canonical address and contract allowlist systems; operate real-time monitoring for wallets and DeFi positions; conduct independent technical reviews of protocol integrations; verify ERC-20 approval hygiene and partner on automated reconciliation.
Seniority
Staff/Senior, hands-on IC