Senior Software Engineer, Trust & Safety

Vercel is a company that provides developers with tools and cloud infrastructure to build and secure a faster web. As a Senior Software Engineer on the Trust & Safety team, you will analyze threat actor behavior, design production-ready systems to mitigate abuse, and collaborate with various teams to enhance platform safety.

Responsibilities:

• Analyze threat actor behavior and evolving abuse patterns across large, heterogeneous datasets to inform detection logic, policy decisions, and scalable mitigations
• Research, prototype, and implement state-of-the-art LLM-driven techniques for abuse detection, classification, and prevention
• Design and develop production-ready systems that detect and disrupt abusive behavior across the Vercel platform
• Build, maintain, and fine-tune internal tools, datasets, and evaluation pipelines for trust and safety workflows
• Collaborate closely with security, product, and infrastructure teams to bring research ideas into stable, scalable production systems

Requirements:

• 5+ years of experience in abuse prevention, trust & safety, or security engineering
• Strong programming skills in JavaScript/TypeScript and Python
• Hands-on experience working with LLMs, including prompt engineering, evaluation, and fine-tuning
• Solid understanding of cloud infrastructure, including AWS
• Strong understanding of real-world threat actor behavior and abuse tactics
• Experience owning systems end-to-end, from initial research through production deployment and iteration