---
title: 'Smart Contract Engineer at Ether.fi'
canonical: 'https://feeny.ai/job/smart-contract-engineer-ether-fi-cayman-islands-fd7de65crxxw'
type: 'job'
last_seen: '2026-09-11'
---

# Smart Contract Engineer at Ether.fi

- **Company:** Ether.fi
- **Location:** Cayman Islands
- **Employment:** full-time
- **Posted:** 2025-10-08
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/ether.fi/1de21faf-5280-4565-9d81-eb8d21f0e0a3

## Job description

About us: [Ether.fi](http://Ether.fi) is an innovative, rapidly growing crypto-native financial platform on a mission to put users in control of their wealth—making it easy to save, earn, and spend crypto. Positioned as a leading decentralized finance (DeFi) bank, [ether.fi](http://ether.fi) offers a fully integrated, non-custodial suite of products—Stake, Liquid, and Cash—that bridge crypto utility with real-world convenience. As we continue to scale, we’re actively hiring talented, mission-driven individuals who want to shape the future of finance from the ground up. Learn more at [ether.fi](http://ether.fi).

Position Overview: We’re looking for engineers who want to build & ship, run the protocol operations, oversee the onchain activities, and optimize for efficiency. This role is onsite 4 days per week at one of our global offices: NYC, Denver, or the Cayman Islands.

What You’ll Work On:

- Building and Operating the safest and most efficient Crypto Neobank
- Designing and deploying Solidity smart contracts
- Building backend systems to automate on-chain operations, secure user flows, and integrate protocol logic.
- Engaging in rigorous testing, code reviews, and documentation to uphold high standards of quality and maintainability.
- Participating as the security guardian in securing ether.fi's web3 tech stacks/ops.

You Might Be a Fit If You:

- Strong programming & design skill in Solidity
- Have strong fundamentals in software engineering & enjoys problem solvings.
- Care about clean & secure smart contract code, and think deeply about edge cases and failure modes.
- Thrive in fast-moving environments where specs are open-ended and the best idea wins.
- Have hacked on Blockchain/Smart Contract stuff for fun — maybe you’ve built your own smart contracts, audited protocols, or played around with multiple DeFi protocols, MEV bots, etc.
- At least 4 years industry experience

Benefits:

- Competitive salary, performance-based incentives, and token allocation grant
- Opportunity to work with a Top 5 Ethereum protocol, by TVL
- Opportunities for professional development and growth within the organization
- Health, dental, and vision insurance plans
- Collaborative and inclusive work culture
- Exposure to cutting-edge technologies in the blockchain and cryptocurrency space
- Global team with opportunity for travel and working out of our 3 offices around the world
- 4 weeks work from anywhere
- Exciting company events and team-building off-sites

## About Ether.fi

## Company Overview
- **One-liner**: Ether.fi is a leading non-custodial liquid staking protocol and DeFi ecosystem building the rails for decentralized, on-chain banking.
- **Entity Type**: Private (Series A)
- **Headquarters**: George Town, Cayman Islands
- **Founded**: 2022
- **Founders**: Mike Silagadze (CEO) and Rok Kopp

## Core Business
- **Primary Industry**: Decentralized Finance (DeFi) / Liquid Staking / Crypto Financial Services
- **Target Customers**: Crypto-native individual stakers (B2C), institutional node operators, and DeFi users seeking yield and spending products.
- **Mission**: To put users in charge of their wealth—making it easy to save, earn, and spend crypto in a secure, transparent, and non-custodial way.

## Products & Services
- **[Stake (eETH/weETH)](https://www.ether.fi/careers)**: A non-custodial liquid staking protocol. Users stake ETH or stETH and receive eETH (or weETH for DeFi composability), which accrues staking rewards and can be used across DeFi. It is natively re-staked to earn additional yield.
- **[Liquid](https://www.ether.fi/careers)**: Automated strategy vaults that find and optimize yields for users across DeFi protocols.
- **[Cash](https://www.ether.fi/careers)**: A Visa credit card product allowing users to spend and borrow against their crypto assets without selling them. Includes a KYC process and fraud detection.
- **[eBTC](https://www.ether.fi/blog/non-custodial-actively-defended)**: A liquid staking token for Bitcoin, extending the protocol’s non-custodial staking model.
- **[eUSD](https://www.ether.fi/blog/non-custodial-actively-defended)**: A stablecoin product within the ether.fi ecosystem.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company).
- **Key Metric**: Over **$10B in assets under management (AUM)** as of June 2026. The company has been **profitable since day one**.
- **Total Funding**: $32.3M raised across 4 rounds (Series A).
- **Notable Investors**: CoinFund, Node Capital, Chapter One (26 institutional investors and 4 angel investors total).
- **Growth Signals**: A team of ~30 people (almost all technical staff) managing over $10B in AUM, demonstrating extreme capital efficiency. The company is actively expanding its product suite into consumer credit cards (Cash) and Bitcoin staking (eBTC), signaling a move from pure DeFi infrastructure to end-user financial applications.

## Competitive Advantages
- **Non-Custodial + Actively Defended**: The protocol is designed so that ether.fi cannot unilaterally move user funds (non-custodial), but it can pause the system and block in-flight attacks to protect users. This is a unique security doctrine that avoids the "decentralization theater" that leaves users drained during exploits.
- **Four-Layer Security Architecture**: Operational security (key/infra hygiene), smart contract bounds (timelocks, rebate caps), crosschain defenses (4-of-4 DVN quorum, per-chain rate limits), and real-time active defense (wired to Hypernative monitoring).
- **Capital Efficiency**: A tiny team (~30) manages a massive $10B+ asset base, indicating highly automated, lean operations and strong technical leverage.
- **Profitability**: Profitable from day one, avoiding the "ponzinomics" and unsustainable token models common in the space.

## Strategic Focus
- **Building Real Consumer Applications**: The company is focused on moving beyond pure DeFi infrastructure into mainstream financial products like the Ether.fi Cash Visa card, bridging the gap between crypto and everyday spending.
- **True On-Chain Banking**: The long-term vision is to offer a full suite of non-custodial financial services (savings, lending, spending) entirely on-chain.
- **Security-First Growth**: The public security doctrine (non-custodial, actively defended) is a core differentiator and a key focus of engineering effort, as outlined in their blog.

## Why Work Here
- **High Impact, Small Team**: With ~30 employees and $10B+ in AUM, every employee has outsized responsibility and influence on the product and protocol.
- **Top Compensation**: Annual performance-based bonuses, option to be paid in ETH, and a share of token allocation.
- **Wellness Benefits**: Unlimited paid time off, one month per year to work fully remotely, plus health, dental, and vision coverage.
- **In-Office Collaboration**: The company emphasizes in-person work (79% on-site, 16% hybrid) with offices in New York, Denver, Grand Cayman, and Dubai. They believe face-to-face interaction drives success.
- **Culture & Events**: Frequent company off-site retreats (e.g., Cayman Islands, Lisbon) and attendance at top crypto events.
- **Engineering Culture**: A builder-first environment with a focus on security, smart contract engineering, and real-time fraud/scam hunting. The interview process includes a skills-based interview and a final meeting with the CEO.
- **Guiding Principles**: Decentralization is a primary objective, sustainable revenue model, and "never compromise on ethics."

## Sources
1. [ether.fi Careers Page](https://www.ether.fi/careers)
2. [ether.fi Security Doctrine Blog](https://www.ether.fi/blog/non-custodial-actively-defended)
3. [Tracxn - ether.fi Company Profile](https://tracxn.com/d/companies/etherfi/__ybuswctFLX6Yyk0tndtj8aoDimNowhN3z_XQDPgnARo)
4. [Jobera - ether.fi Careers](https://jobera.com/employer/ether-fi/)
5. [ether.fi Jobs on Ashby](https://jobs.ashbyhq.com/ether.fi)

## Other roles at Ether.fi

- [Software Engineer: Credit Card/Fraud](https://feeny.ai/job/software-engineer-credit-card-fraud-ether-fi-new-york-jynqeb4rzj9a) — New York, NY
- [Head of Ecosystem & Partnerships](https://feeny.ai/job/head-of-ecosystem-partnerships-ether-fi-cayman-islands-v2je5k678km7) — Cayman Islands
- [Fraud Engineer](https://feeny.ai/job/fraud-engineer-ether-fi-new-york-xa438zcavkrz) — New York, NY
- [Senior Frontend Engineer](https://feeny.ai/job/senior-frontend-engineer-ether-fi-cayman-islands-jy8j9v326k31) — Cayman Islands
- [Security Engineer](https://feeny.ai/job/security-engineer-ether-fi-cayman-islands-tztb3kb47rec) — Cayman Islands
- [Data Insights & Analytics Lead](https://feeny.ai/job/data-insights-analytics-lead-ether-fi-cayman-islands-aa10rxkvkv0v) — Cayman Islands
- [Smart Contract Lead](https://feeny.ai/job/smart-contract-lead-ether-fi-new-york-y7nb97z7sg7n) — New York, NY
- [Fraud Lead (Scan Hunter)](https://feeny.ai/job/fraud-lead-scan-hunter-ether-fi-new-york-ggw0merc1p78) — New York, NY
- [Senior Full Stack Software Engineer](https://feeny.ai/job/senior-full-stack-software-engineer-ether-fi-new-york-6wnw9p39xvcm) — New York, NY
- [Front End Engineer](https://feeny.ai/job/front-end-engineer-ether-fi-new-york-mb3h6p7nyqgr) — New York, NY