Senior Backend Engineer — Fraud & Abuse Systems

OpenAI; California (MO); On-site; USD 180,000 - 260,000; Full time

Job summary

OpenAI is seeking a software engineer for the Scaled Abuse team to design and operate backend data systems that detect, prevent, and respond to fraudulent and abusive behavior at scale. You will collaborate with Trust & Safety, Security, and Product to translate signals into reliable defenses while maintaining a good user experience.

The role emphasizes rapid learning, ambiguity tolerance, and hands-on engineering.

Qualifications

• Have at least 5 years of software engineering experience in backend and data systems.
• Have at least 2 years experience in fraud or abuse analysis, investigation, and/or operations.
• Ability to dive into code and suggest pragmatic improvements.

Responsibilities

• Design and build systems for fraud detection and remediation while balancing fraud loss, cost of implementation, and customer experience
• Work closely with finance, security, product, research, and trust & safety operations to holistically combat fraudulent and abusive actors on our system
• Stay abreast of the latest techniques and tools to stay several steps ahead of determined and well resourced adversaries
• Utilize GPT-5 and future models to more effectively combat fraud and abuse

Skills

Backend software engineering

Fraud/abuse analysis

Codebase exploration

Learning agility

Ambiguity tolerance

Machine Learning experience (plus)

Job description

OpenAI is seeking a software engineer for the Scaled Abuse team to design and operate backend data systems that detect, prevent, and respond to fraudulent and abusive behavior at scale. You will collaborate with Trust & Safety, Security, and Product to translate signals into reliable defenses while maintaining a good user experience.

The role emphasizes rapid learning, ambiguity tolerance, and hands-on engineering.