About us

Ether.fi is one of the largest crypto companies in the world, with over $10B in assets under management and a team of ~30, almost entirely technical staff. We’ve been profitable since day one and are focused on building real consumer financial applications.

We believe the future of finance is true on-chain banking. Our products — Stake, Liquid, and Cash — let users earn yield through DeFi strategies and spend their assets globally through our credit card program. You can view our growth publicly on Dune.

As we scale our financial products, maintaining world-class fraud/risk defense is core to protecting our users and the long-term health of our card program.

Position overview

We’re hiring a technical Fraud Engineer with a natural white-hat hacker / scam hunter mindset. You enojy spotting anomalous patterns, reverse-engineering attack campaigns, and building systems that stay one step ahead of sophisticated fraudsters.

This is a high-ownership, hands-on role where you will own the full fraud stack for ether.fi's campaigns, credit card program, fund flows while working extremely closely with our Engineering/CX teams.

What you’ll do

Own, design and build real-time fraud monitoring, alerting, and automated mitigation systems
Hunt emerging threats: cashback farming, card testing, merchant abuse, friendly fraud, money laundry and malicious behavior inside the Ether.fi ecosystem
Develop and tune advanced fraud rules, behavioral signals, and scoring logic
Build internal tools, dashboards, and scripts that make the team dramatically more effective
Define fraud strategy and operational playbooks that scale with the business
Active communication with cross-teams and with external business partners to mitigate the fraud risks

What we are looking for

Strong hacker/white-hat mindset: you get genuinely excited about weird patterns, scam tactics, and outsmarting attackers
Exceptional ability to find hidden signals in noisy transaction and behavioral data
Hands-on programming skills and experience building tools or detection systems
High ownership, low-ego, and ability to drive results in an ambiguous, fast-moving environment

Plus if you have

Worked at a fintech, neobank, or issuer processor
Exposure to web3/crypto-related fraud patterns
Exposure to consumer fraud patterns
Built or scaled early-stage fraud operations teams
Knowledge of card/payment fraud mechanics
(card testing, BIN attacks, friendly fraud, merchant collusion, etc.)

Perks and benefits

Competitive salary, performance-based incentives, and token allocation grant
Opportunity to own fraud defense for multi-billion dollar products
Health, dental, and vision insurance
Global team with opportunities for travel across our 3 offices
4 weeks work-from-anywhere
Company events and team-building off-sites