Fraud Prevention Lead (Identity & Account Security)

Company: Alexander Barnes
Apply for the Fraud Prevention Lead (Identity & Account Security)
Location: London
Job Description:

Alexander Barnes is leading the search for a Fraud Prevention Lead, Identity & Account Security for one of the fastest growing FinTechs globally.

This role owns identity-linked fraud prevention across a large-scale digital banking and payments environment.

The scope includes:

  • Account Takeover and credential abuse
  • Authentication and login attacks
  • Session hijacking and identity theft
  • Behavioural and device anomalies
  • Mule and coordinated abuse patterns

You’ll own fraud detection and prevention across onboarding, authentication, account lifecycle, and transaction flows.

The focus is real-time decisioning, behavioural detection, fraud signals, authentication controls, and scalable prevention systems.

The team is looking for someone with deep hands-on experience across ATO, Identity Abuse, Authentication Risk, Credential Fraud, Trust & Safety, or behavioural fraud prevention.

Strong understanding of:

  • Behavioural analytics
  • MFA and recovery flows
  • Velocity frameworks
  • Rules and model-driven detection

Strong SQL and Python capability is expected.

The environment is highly technical and highly cross-functional, working closely with engineering, ML, data science, product, and fraud teams to build scalable fraud prevention systems at platform level.

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Posted: May 19th, 2026