Fraud Detection Expert - Financial Crimes

Mercor; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Mercor is seeking senior fraud detection professionals to build evaluation tasks for AI systems operating in Fortune 500 enterprise fraud and financial crimes contexts. The work spans large-scale transaction monitoring, multi-stakeholder investigations, and regulatory reporting cycles.

You will draft reference outputs and rubrics that reflect how senior practitioners think. Ideal candidates bring 5+ years in fraud detection, AML, and experience with large financial institutions and enterprise

Qualifications

• 5+ years in fraud detection or AML within a Fortune 500 bank, payments company, or financial institution.
• Experience designing enterprise fraud scenarios and reference outputs.
• Familiarity with regulatory reporting and investigation workflows.
• Ability to author rubrics and assessment materials for advanced practitioners.

Responsibilities

• Construct enterprise fraud scenarios spanning large-scale monitoring and complex regulatory reporting cycles (SARs, CTRs) at Fortune 500 institutions.
• Build tasks across fraud areas including payment fraud, account takeover, AML, synthetic identity, and merchant/card network fraud.
• Develop fraud operations scenarios involving tools like SAS Fraud Management, Actimize, and Feedzai.
• Apply detection methodologies (rules-based and ML-driven) and produce reference reports and risk narratives.
• Author rubrics distinguishing authentic investigative judgement from recall.

Skills

Fraud detection

AML compliance

Financial crimes investigation

Fortune 500 experience

Tools

SAS Fraud Management

Actimize

Feedzai

Job description

Role Overview

• Mercor is seeking senior fraud detection professionals to build evaluation tasks for AI systems operating in Fortune 500 enterprise fraud and financial crimes contexts.




• The workflows are calibrated to the transaction scale, adversarial sophistication, and financial-loss stakes of Fortune 500 banks, payment companies, and large enterprises.




• Contributors design enterprise fraud detection scenarios, draft reference outputs, and write rubrics that capture how senior F500 fraud and financial crimes operators think.

Key Responsibilities

• Construct enterprise fraud scenarios spanning large-scale transaction monitoring, multi-stakeholder investigation workflows, and complex regulatory reporting cycles (SARs, CTRs) at F500 institutions.




• Build tasks across F500 payment fraud, account takeover and identity theft, anti-money laundering (AML), synthetic identity fraud, and merchant/card network fraud.




• Develop fraud operations scenarios involving tools such as SAS Fraud Management, Actimize, Feedzai, and enterprise case management/transaction monitoring platforms in F500 stacks.




• Apply enterprise fraud detection methodologies (rules-based and ML-driven detection models, network/link analysis, KYC/AML frameworks, BSA compliance) and produce reference investigation reports, risk models, and executive-level fraud narratives.




• Author rubrics that distinguish authentic enterprise fraud investigation judgment from generic textbook or certification-exam-level recall.

Ideal Qualifications

• 5+ years working in fraud detection, financial crimes investigation, or AML compliance at a Fortune 500 bank, payments company, or financial institution (JPMorgan Chase, Visa, PayPal, American Express, Wells Fargo).




• Direct ownership of F500-scale fraud detection programs, investigation caseloads, or transaction monitoring systems.




• Fluency in enterprise fraud detection tooling and methodologies, plus understanding of how F500 regulatory reporting (FinCEN, BSA/AML), law enforcement coordination, and case escalation actually work.




• Prior rubric, fraud-investigation training curriculum, or case documentation authorship is a plus.