E

ether.fi

Ethereum staking and restaking platform

Fraud Engineer

Full-Time
No salary listed
Mid
Dubai - United Arab Emirates+2 moreMore locations: New York, NY, USA | Denver, CO, USA
Hybrid
Finance & BankingRisk Management

About the job

Requirements
  • Exceptional ability to identify hidden signals in noisy transaction and behavioral data.
  • Genuine interest in unusual patterns, scam tactics, and outsmarting attackers.
Responsibilities
  • Own real-time fraud monitoring, alerting, and automated mitigation systems.
  • Hunt emerging threats, including cashback farming, card testing, merchant abuse, friendly fraud, money laundering, and malicious behavior in the ether.fi ecosystem.
  • Develop and tune advanced fraud rules, behavioral signals, and scoring logic.
  • Work on internal tools, dashboards, and scripts to improve team effectiveness.
  • Define fraud strategy and operational playbooks that scale with the business.
  • Communicate actively with cross-functional teams and external business partners to mitigate fraud risks.
Desired Qualifications
  • Experience working at a fintech, neobank, or issuer processor.
  • Exposure to web3/crypto-related fraud patterns.
  • Exposure to consumer fraud patterns.
  • Experience building or scaling early-stage fraud operations teams.
  • Knowledge of card and payment fraud mechanics, including card testing, BIN attacks, friendly fraud, and merchant collusion.

About the company

Ether.fi provides a platform for Ethereum staking and restaking. It lets users stake their ETH to earn rewards and, through a partnership with EigenLayer, participate in restaking to earn additional rewards by validating software modules built on Ethereum. Users maintain control of their private keys, reducing counterparty risk compared to traditional node operators. Revenue comes from a small fee on staking rewards to cover platform maintenance and support. The service targets crypto enthusiasts and institutions looking to maximize returns from ETH staking, while keeping security and decentralization in focus. The company’s goal is to offer a secure, accessible way to earn staking and restaking rewards and to grow participation in decentralized staking across the Ethereum ecosystem.

Company Size

51-200

Company Stage

Series A

Total Funding

$28.3M

Headquarters

George Town, Cayman Islands

Founded

2022

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Simplify's Take

What believers are saying

  • Ether.fi launched tokenized stocks, metals, and portfolio borrowing on Optimism in August 2026.
  • CoinGecko showed $5.25 billion TVL and $76.6 million daily volume on September 30, 2026.
  • 21Shares listed an ETHFI ETP in Europe, adding regulated investor access on September 22, 2026.

What critics are saying

  • Ether.fi exited EigenLayer in September 2026, exposing its original restaking engine as obsolete.
  • The September 11 AtomicQueue exploit drained user funds and exposed legacy contract risk.
  • US exclusions and tokenized-asset jurisdiction limits block the fastest consumer-growth markets.

What makes ether.fi unique

  • ether.fi combines self-custody, staking, spending, and borrowing in one non-custodial app.
  • Its validator scale and Nexus Mutual cover protect up to 15,000 ETH slashing losses.
  • Protocol revenue funds ETHFI buybacks, tying usage directly to token demand.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Wellness Program

Mental Health Support

Remote Work Options

Hybrid Work Options

4 weeks work-from-anywhere

Conference Attendance Budget

Professional Development Budget

Stock Options

Company Equity

401(k) Retirement Plan

401(k) Company Match

Gym Membership

Phone/Internet Stipend

Home Office Stipend

Paid Vacation

Paid Sick Leave

Paid Holidays

Relocation Assistance

Employee Referral Bonus

Childcare Support

Parental Leave

Family Planning Benefits

Fertility Treatment Support

Adoption Assistance

Elder Care Support

Pet Insurance

Bereavement Leave

Tuition Reimbursement

Professional Certification Support

Mentorship Program

Meal Benefits

Commuter Benefits

Legal Services

Employee Discounts

Company Social Events

Performance Bonus

Profit Sharing

Employee Stock Purchase Plan

Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

-4%
PR Newswire
Oct 6th, 2026
Ether.fi deploys MoonPay stack for self-custodial neobank with $918M card spend

Ether.fi has partnered with MoonPay to integrate its full payments infrastructure stack into the crypto neobank's platform. The integration covers funding, internal transfers, and cash-out functions whilst maintaining self-custody for users. MoonPay will provide four products: Headless Ramps for seamless deposits and withdrawals, Trade for cross-chain conversions, Enterprise Virtual Accounts with traditional banking rails including ACH and SWIFT, and Crypto Deposits for bringing assets from external wallets and exchanges. Ether.fi's card processed $123.7 million in September 2026 across 1.5 million transactions, up from $24.1 million in September 2025. Since launching in April 2025, the card has processed $918.1 million in total spend. The partnership aims to create a unified experience where users verify their identity once rather than separately for each service, whilst retaining control of their private keys throughout.

Crypto Headlines
Oct 6th, 2026
Ether.fi will launch its own stablecoin on Ethena's whitelabel infrastructure.

Ether.fi will launch its own stablecoin on Ethena's whitelabel infrastructure. Ether.fi's stablecoin launch could reshape its ecosystem, enhancing integration of staking and DeFi, while impacting stablecoin market dynamics.

BSC News
Sep 26th, 2026
TVL of Plume Network's Vaults just doubled!

TVL of Plume Network's Vaults just doubled! Plume Network's RWA vaults have recorded a TVL increase of roughly 101% in one month, rising to approximately $219M, driven by institutional allocations and growing ecosystem adoption. Plume vaults attract institutional capital. The vault growth has been driven in part by high-profile institutional allocations. Ether.fi committed $100 million to a new RWA vault on Plume, a move that placed licensed yield and redemption mechanics ahead of headline TVL figures, with the allocation positioned as exclusive to the Plume vault. Separately, Bybit added nOPAL to its RWA Earn platform, an on-chain credit product built on Brazilian credit card receivables and structured as a vault on Plume's platform. The product carried over $70 million in TVL and a roughly 12% 30-day rolling yield as of August 2026. (Advertisement)

Business News This Week
Sep 25th, 2026
Enso powers tokenized stock execution for ether.fi's new consumer app.

Enso powers tokenized stock execution for ether.fi's new consumer app. Integration marks Enso's largest consumer-facing deployment to date, giving ether.fi Cash users cross-chain access to tokenized equities and metals in a single transaction ZURICH, Switzerland, Sept 25 - Enso, the execution infrastructure platform for on-chain finance, has announced it is powering execution for tokenized stocks and metals inside ether.fi's new consumer app. The integration makes Enso the exclusive minting and redemption provider for xStocks-based tokenized assets within ether.fi Cash, and represents Enso's largest consumer-facing deployment to date. The integration underpins tokenized-asset access introduced as part of ether.fi's broader Summer 2026 release, which added tokenized stock and metals trading, portfolio-backed borrowing and expanded fiat on-ramps to its self-custodial app. Enso operates as the execution layer underneath ether.fi Cash, handling routing, minting, redemption and settlement in a single route interface. With the integration live, ether.fi Cash users can buy and redeem tokenized stocks and ETFs, as well as tokenized metals, directly from their Cash balance in a single transaction, without manually bridging, selecting a chain or holding an intermediate asset. Discover more Brand Management Stock market updates Tourism industry reports The integration builds on an existing relationship between the two companies: Enso already powers one-click, cross-chain deposits into ether.fi's liquid vaults, live since 2025. This expands that infrastructure into ether.fi's largest and most consumer-facing product to date, and extends Enso's broader real-world asset execution track record, which includes serving as an approved minter for Ondo Finance andas a dApp recommended by Porto, Anchorage Digital's institutional self-custody wallet. "Tokenized assets have lived in a DeFi niche for too long," said Connor Howe, Co-Founder and CEO of Enso. "This integration puts them inside a product hundreds of thousands of people already use every day, without asking any of them to think about routing, liquidity or which chain an asset happens to live on. It's the clearest proof yet that execution infrastructure built for DeFi is ready for mainstream consumer finance." "What stood out about Enso was how they work. From the first conversation they focused on the outcome we needed, then built the execution around our architecture rather than asking us to bend to theirs" said Charles Mountain, Head of Ecosystem, ether.fi. Access to tokenized stocks and metals through ether.fi is gated at the issuer level and subject to eligibility and jurisdictional restrictions; the feature is not available to users in the United States.

CoinMarketCap
Sep 12th, 2026
ETHFI surges 12.9% on cashback redesign and social momentum.

ETHFI surges 12.9% on cashback redesign and social momentum. September 12, 2026 at 8:03 AM PDT Ether.fi's ETHFI surges on cashback redesign and social momentum. The recent 12.9 percentage point increase in ether.fi (ETHFI) over the last 24 hours is driven by a new cashback design that funds rewards via open-market ETHFI buybacks, staking-based membership incentives, and follow-through trader momentum. Programmatic buybacks fund cashback rewards. Ether.fi introduced a new rewards structure where cashback is now funded by buying ETHFI on the market using protocol revenue instead of using pre-allocated reserves. This change explicitly links protocol revenue growth to ongoing ETHFI buy pressure. A summary of the change is described in a short ether.fi cashback and buyback update. A separate event listing on CoinMarketCal's X bot flags "Cashback funded by buybacks" for Ether.fi, confirming this as a discrete protocol-level change, and timestamps it on 11 Sep 2026 with moderate impact scoring.[1] Because the change converts protocol revenue into recurring spot ETHFI purchases, any increase in ether.fi usage or fee revenue now feeds directly into incremental buy demand for the token, which is exactly the kind of structural support that traders tend to bid ahead of. The main fundamental catalyst is that ETHFI now has a clearer, programmatic buyback mechanism tied to protocol revenue, so speculators can justify paying a higher price on expectations of sustained buy pressure. Staking-Based membership upgrades and boosted rewards. The same update also strengthened ETHFI's role inside the product by tying membership and higher cashback tiers to staking the token. The cashback redesign introduces "boosted categories" that can offer up to 30 percent back for certain activities, plus a minimum claim size and 7-day clearing period.[1] Membership upgrades can now be achieved by staking ETHFI, so users who want higher cashback tiers or "instant" upgrades are incentivized to buy and lock tokens rather than just holding ETH or using the protocol passively.[1] These features turn ETHFI from mostly a passive governance or incentive token into something closer to a loyalty and tier-access asset, which tends to support a "flywheel" story in trader narratives: more users, more staking, more buybacks, and potentially less liquid float. The market is likely pricing in not only immediate buybacks but also a longer-term increase in sticky demand from users who need ETHFI exposure or staking to unlock better rewards. Strong social momentum and technical breakout trading. Right after this programmatic buyback announcement, ETHFI attracted active attention from traders and social accounts that focus on momentum, which likely helped translate the catalyst into a sharp 24-hour price move. Multiple X posts in the last day describe ETHFI as showing "strong bullish momentum" with price trading above several moving averages and call out it being "definitely on the watchlist," framing it as a breakout long setup for short-term traders.[2] Other accounts label ETHFI as having "insane strength" and suggest that "1 dollar is coming soon," reinforcing a reflexive bullish narrative and encouraging additional speculative flows.[3] Another trader simply writes that "$ETHFI IS A BEAST TODAY," highlighting how visible the move became in trading circles.[4] Algorithmic or signal-based tools also flagged ETHFI as a top gainer, with one trader noting that a system "flagged ETHFI as the best gainer in the last 24h," which they then used as a signal to take a trade.[5] This kind of reinforcement often drives additional short-term volume and volatility on top of the underlying fundamental news. The structural change in ETHFI's reward mechanics provided the initial catalyst, and momentum traders plus social attention appear to have amplified that into the 24-hour move you are seeing. Conclusion. The 12.9 percentage point move in ether.fi (ETHFI) over the last 24 hours lines up closely with a concrete protocol update that redirects cashback rewards into ETHFI tokens bought via programmatic buybacks and ties membership upgrades to staking ETHFI. That fundamental shift gives traders a clearer story around recurring buy pressure and token utility, and active social chatter plus breakout-style trading then magnified the impact into a sharp, short-term price move. Confidence: High, because a specific, well documented buyback and cashback redesign for Ether.fi occurred just before the observed move, and it is widely referenced in news and trader posts. As of 12 Sep 2026 1:57pm UTC using news articles and posts from X. CMC AI can make mistakes. Please DYOR.