Blockchain Engineer
ether.fi helps users stake ETH, BTC, and stablecoins while earning rewards and maintaining full control through liquid restaking tokens integrated across DeFi protocols.
Maintainer signals as of 9/2/2026
Funding history
Projects
About ether.fi
ether.fi provides decentralized liquid staking and restaking for Ethereum, Bitcoin, and stablecoins. Users deposit assets to receive liquid tokens (eETH, weETH, eBTC, eUSD) that earn staking rewards, restaking yields, and loyalty points while remaining composable across DeFi protocols. The platform integrates with EigenLayer, Symbiotic, and Karak for restaking, uses distributed validator technology through SSV Network, and offers automated DeFi strategy vaults plus a crypto-native credit card.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will build, deploy, and operate DeFi yield vault smart contracts and the backend systems supporting them. You will develop trading, rebalancing, NAV, monitoring, and automation tooling; assess protocol risks; review and sign vault transactions; test contracts; and support security reviews and live vault operations.
Requirements
- Production Solidity development
- Backend service, automation, and tooling development
- Deep DeFi knowledge
- 4+ years of industry engineering experience
- Experience shipping and operating a yield vault
- Knowledge of yield sources and protocol risk
Responsibilities
- Design, write, deploy, and configure yield vault smart contracts
- Build tooling for trades, rebalancing, policies, whitelists, and administration
- Extend vault architecture for new strategies, assets, and chains
- Review smart contracts and tooling
- Test and formally verify smart contracts where appropriate
- Work with external auditors through review cycles
- Build and maintain redemption-flow, NAV, pricing, and automation services
- Automate allocation, harvesting, and rebalancing operations
- Assess new protocols and determine allocation terms
- Review and sign vault rebalancing transactions
- Build monitoring for oracle failures, depegs, stuck withdrawals, and bad allocations
- Participate in web3 security operations
