Software Engineer, Fraud

About Mercor

Mercor is defining the future of work. We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development. Our vast talent network trains frontier AI models in the same way teachers teach students: by sharing knowledge experience and context that cant be captured in code alone. Today more than 30000 experts in our network collectively earn over $2 million a day.

Mercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious fast-paced and deeply committed team. Youll work alongside researchers operators and AI companies at the forefront of shaping the systems that are redefining society. Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our San Francisco NYC or London offices.

About Mercor

Mercor is defining the future of work. We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development.

Our vast talent network trains frontier AI models in the same way teachers teach students: by sharing knowledge experience and context that cant be captured in code alone. Today more than 30000 experts in our network collectively earn over $2 million a day.

Mercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious fast-paced and deeply committed team. Youll work alongside researchers operators and AI companies at the forefront of shaping the systems that are redefining society.

Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our new San Francisco headquarters.

About the Role

As a Fraud Engineer at Mercor youll help build the systems that protect the integrity of our platform at scale. Youll work on high-impact problems across identity verification abuse prevention and project-level fraud partnering closely with product and engineering to understand where risk exists quantify it and turn that understanding into durable systems and workflows.

This role is ideal for someone who has seen fraud problems firsthand and can translate that experience into practical roadmaps strong technical judgment and fast-moving execution. If you dont have that experience but are interested in helping spot and catch fraud and learn fast feel free to apply. Youll join a small team where autonomy matters and where the right person can shape both strategy and implementation from day one.

This is a role with high impact and broad scope. Your contributions will help solve an enormous challenge. This small team is responsible for keeping the platform safe and saving the company many millions of dollars annually.

You will:

• Own and build fraud detection and prevention systems across multiple fraud surfaces including identity and platform abuse.

• Partner closely with product and engineering to define a fraud roadmap prioritize the highest-leverage problems and ship defenses quickly.

• Design and implement tools workflows and backend systems that detect suspicious behavior and reduce fraudulent activity.

• Establish clearer visibility into fraud patterns operational risk and the effectiveness of prevention systems over time.

• Work across ambiguous fast-moving problem spaces and independently drive large scopes of work on a lean team.

What Were Looking For

• 4 years of experience in software engineering.

• Preferred: Experience working on fraud or abuse prevention with a strong understanding of how to translate patterns and threats into product and engineering roadmaps.

• Ability to operate autonomously and take ownership over large ambiguous problem areas.

• Strong backend engineering fundamentals and comfort building production systems.

• A practical high-judgment approach to balancing speed security and user experience.

Why Mercor

• Impact: Your work will directly protect the integrity of Mercors platform and the systems that power the future of AI work.

• Ownership: Youll help define a critical function from an early stage with meaningful influence over both roadmap and implementation.

• Growth: Youll work closely with product and engineering leaders on some of the companys highest-priority infrastructure and risk problems.

Benefits

• Bi-annual performance bonus structure

• Generous equity grant vested over 4 years

• Up to $15k Relocation bonus

• $10K housing bonus (if you live within 0.5 miles of our office)

• $1.5K monthly stipend for meals

• Free Equinox membership

• $200 monthly laundry reimbursement

• $200 monthly personal wellness reimbursement

• Health Dental Vision insurance

Required Experience:

IC