Senior Smart Contract Engineer - Security (DeFi) - Remote

The Bitcoin Street Journal; Denver (CO); Presencial; USD 120.000 - 230.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health insurance

Dental insurance

Vision insurance

Token allocation grant

4 weeks work from anywhere

Global travel opportunities

Descripción de la vacante

ether.fi is seeking a Senior Smart Contract Engineer with a security focus to design, build, and audit on-chain contracts across Stake, Liquid, and Cash. You will influence security practices from day one and work closely with engineering leadership to ensure safe deployment and monitoring of critical assets.

You will review changes with mainnet readiness, collaborate with external auditors, and help shape signer workflows, timelocks, and access control to protect billions in user assets while

Formación

• Experience building secure smart contracts for DeFi protocols.
• Strong approach to security testing, edge cases, and failure modes.
• Familiarity with upgrade patterns and access controls.

Responsabilidades

• Design, build, and own smart contracts/backends across Stake, Liquid, and Cash with safe upgrade paths.
• Review and audit contract changes before mainnet deployment.
• Collaborate with external auditors from scoping to fix verification.
• Design and improve transaction signing, multisig workflows, and timelock usage.
• Improve on-chain operations like upgrades, parameter changes, and governance actions.

Conocimientos

Smart contract development

Security-focused design

Auditing and review

DeFi knowledge

Multisig & timelocks

Cross-chain messaging

Herramientas

Auditing tooling

Formal verification

Descripción del empleo

ether.fi is seeking a Senior Smart Contract Engineer with a security focus to design, build, and audit on-chain contracts across Stake, Liquid, and Cash. You will influence security practices from day one and work closely with engineering leadership to ensure safe deployment and monitoring of critical assets.

You will review changes with mainnet readiness, collaborate with external auditors, and help shape signer workflows, timelocks, and access control to protect billions in user assets while