Fraud Engineer

As a Fraud Engineer at ether.fi, you own the full fraud stack for our financial products, credit card program, and fund flows. You join a team of ~50 almost entirely technical staff at one of the largest crypto companies in the world with over $10B in assets under management. Your role is to stay one step ahead of sophisticated fraudsters by spotting anomalous patterns, reverse-engineering attack campaigns, and building systems that protect users and the long-term health of our card program.

What you'll do

• 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 within 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
• Communicate actively with cross-functional teams and external business partners to mitigate fraud risks

What you bring

• A genuine passion for spotting weird patterns, understanding scam tactics, and outsmarting attackers
• An exceptional ability to find hidden signals in noisy transaction and behavioral data
• High ownership, low ego, and the ability to drive results in an ambiguous, fast-moving environment

Nice to have

• Experience at a fintech, neobank, or issuer processor
• Exposure to web3 and 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
• Coding ability with modern AI agents, or willingness to learn

What we offer

• 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 3 offices
• 4 weeks work-from-anywhere
• Company events and team-building off-sites

About ether.fi

ether.fi is one of the largest crypto companies in the world with over $10B in assets under management. We build true on-chain banking products, including Stake, Liquid, and Cash, that let users earn yield through DeFi strategies and spend their assets globally through our credit card program. We have been profitable since day one.