Ether.fi

Backend & Fraud Engineer - Credit Card

Ether.fi
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5 hours ago
Denver, CO, USAMid Level

Responsibilities

  • Improve card transaction experiences by reducing declines, failed authorizations, stuck holds, and other spending friction.
  • Identify product issues affecting real users, propose fixes, and ship improvements.
  • Investigate card testing, cashback farming, merchant abuse, friendly fraud, trial and force-post abuse, and multi-account rings.
  • Own fraud rules, queues, scoring logic, real-time monitoring, alerting, and automated mitigation in Sardine.
  • Query transaction data, investigate live cases, identify root causes, and create controls to prevent recurrence.
  • Build internal tools, dashboards, and scripts for risk and customer experience teams.
  • Collaborate with Product, CX, Compliance, card program partners, and fraud vendors.

Requirements

  • Strong software engineering fundamentals and problem-solving skills.
  • At least 4 years of professional coding experience shipping products.
  • Product sense and a focus on resolving the causes of declined transactions.
  • Ability to query and analyze data independently rather than relying solely on the codebase or other teams.
  • Interest in adversarial problems and the ability to identify and explain suspicious transaction patterns.

Benefits

  • Competitive salary, performance-based incentives, and token allocation grant.
  • Opportunity to work on multi-billion-dollar products on a small team.
  • Health, dental, and vision insurance plans.
  • Global team with opportunities for travel and working from three offices around the world.
  • Four weeks of work from anywhere.
  • Company events and team-building off-sites.

Categories

Ether.fi

About Ether.fi

51-200 employees

Ether.fi builds a decentralized, non-custodial Ethereum staking and liquid restaking protocol that lets users keep their keys while delegating to node operators. It serves crypto holders and developers with staking, liquid tokens, and consumer products such as a credit card and cashback programs, earning fees on protocol and financial services. Founded in 2022 and headquartered in George Town, Grand Cayman, it is privately held.

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