Senior Engineer I (Fraud)

Apollo.io

16 days ago

Remote, United States

Senior

H1B Sponsor

Responsibilities

Lead the implementation and ongoing improvement of abuse detection services and customer account security features.
Implement a home-grown risk decision engine with assistance from the team manager.
Build and maintain APIs to support extensible, low-latency risk decisioning.
Research and analyze abuse tools and attacker tactics to inform detection strategies.
Participate in fraud incident triage and lead development of mitigations and remediation.
Collaborate with Data Science and Data Engineering on model feature design.
Work closely with Fraud Operations and Application Security to align detection and response.
Stay informed on fraud prevention trends and apply relevant insights internally.

5+ years building production backend systems in a SaaS or similar environment.
Experience designing scalable backend services; exposure to risk or decisioning systems is a plus.
Proven track record of designing customer-first features.
Ability to explore and validate ideas using imperfect or partially structured data.
Strong foundation in secure system design and layered defenses.
Comfortable presenting designs to both technical peers and senior stakeholders.
Familiarity with common abuse vectors, evasion techniques, or scraping patterns.
Strong ownership mindset and ability to prioritize effectively.
Fraud, trust & safety, or security-adjacent experience preferred.
Clear written and spoken English communication.

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