Software Engineer, Fraud

Mercor

New York, San Francisco (NY, CA)

On-site

USD 100,000 - 130,000

Full time

14 days+

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Benefits offered by this job

Bi-annual performance bonus

Generous equity grant

Relocation bonus up to $15k

Housing bonus up to $10k

Monthly meal stipend of $1.5k

Free Equinox membership

Monthly laundry reimbursement of $200

Monthly wellness reimbursement of $200

Health, Dental, Vision insurance

Job summary

Mercor is looking for a Fraud Engineer to build systems protecting platform integrity. This role focuses on high-impact problems across identity verification and abuse prevention, requiring 4+ years in software engineering. Responsibilities include owning fraud detection systems and collaborating with product and engineering teams. Benefits include performance bonuses, equity grants, and monthly stipends for meals. The position is in New York City and allows for significant autonomy and influence in decision-making.

Qualifications

4+ years of experience in software engineering.
Understanding of fraud patterns and threats.
Comfort building production systems.

Responsibilities

Own and build fraud detection and prevention systems.
Partner with product and engineering to define a fraud roadmap.
Design and implement tools and workflows to detect suspicious behavior.
Establish visibility into fraud patterns and prevention system effectiveness.
Drive large scopes of work independently.

Skills

Experience in software engineering

Fraud or abuse prevention

Backend engineering fundamentals

Autonomy in problem-solving

Balancing speed and security

Job description

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 can't be captured in code alone. Today, more than 30,000 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. You’ll 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 can't be captured in code alone. Today, more than 30,000 experts in our network collectively earn over $2 million a day.

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, you'll help build the systems that protect the integrity of our platform at scale. You'll 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 don’t have that experience but are interested in helping spot and catch fraud and learn fast, feel free to apply. You'll 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 We're 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 Mercor's platform and the systems that power the future of AI work.
Ownership: You'll help define a critical function from an early stage, with meaningful influence over both roadmap and implementation.
Growth: You'll work closely with product and engineering leaders on some of the company's highest‑priority infrastructure and risk problems.

Benefits