10 hours ago
Denver, CO, USA or New York, NY, USAMid Level
Responsibilities
- Design, write, deploy, configure, review, and extend DeFi yield vault smart contracts.
- Build tooling for trades, rebalancing, vault policies, whitelists, and administrative configuration.
- Develop and maintain backend services for redemption flows, liquidity buffers, NAV reporting, pricing, unwind logic, and vault operations.
- Automate allocation, harvesting, and rebalancing across on-chain strategies without requiring manual intervention.
- Test contracts with unit tests, fuzz tests, invariants, and formal verification, and work with external auditors.
- Review new protocols and contracts, assess their risks, and determine whether and how to allocate capital.
- Review and sign vault rebalancing transactions as a multisig signer.
- Build monitoring and automation for oracle failures, depegs, stuck withdrawals, and bad allocations.
- Participate as a security guardian across the company’s Web3 stack and operations.
Requirements
- Strong production Solidity skills with attention to security, edge cases, and failure modes.
- Strong backend engineering skills for services, automation, and operational tooling.
- Deep DeFi knowledge sufficient to evaluate protocol documentation, contracts, yield sources, and failure modes.
- At least 4 years of industry engineering experience.
- Experience shipping and operating a real yield vault, such as an ERC-4626, BoringVault-style, or comparable architecture.
- Ability to work effectively in a fast-moving, autonomous team.
- Preferred experience includes vault platforms, asset curation, yield products with real TVL, lending markets, LSTs, LRTs, basis and funding trades, stablecoin yield, audits, security reviews, protocol audits, or MEV bots.
Benefits
- Onsite four days per week at a global office in NYC, Denver, or the Cayman Islands.
Tech Stack
Solidity
Categories
About Ether.fi
Ether.fi builds a decentralized, non-custodial Ethereum staking and liquid restaking protocol that lets users keep their keys while delegating to node operators. It serves crypto holders and developers with staking, liquid tokens, and consumer products such as a credit card and cashback programs, earning fees on protocol and financial services. Founded in 2022 and headquartered in George Town, Grand Cayman, it is privately held.