Senior Software Engineer, Trust & Safety

What You’ll Do

• Build the fraud platform: Design and implement fraud detection and risk decisioning systems, rule engines, scoring pipelines, and event-driven risk signals.
• Build for operators: Create investigation and review tooling that helps our Trust & Safety operations team triage, investigate, and resolve cases efficiently.
• Help shape what we build next: Work closely with manager, product, and operations stakeholders to identify exposures, propose solutions, and prioritize the roadmap.
• Think like an adversary: Develop deep understanding of fraud vectors in fundraising and payments (stolen cards, synthetic identities, friendly fraud, campaign abuse) and build adaptive systems.
• Strengthen payment integrity: Work across payment systems to harden the transaction lifecycle against abuse.
• Mentor those around you: Help team develop Trust & Safety domain expertise, share knowledge, and unblock teammates through code reviews.

Requirements

• 6+ years of software engineering experience, with experience in fraud, trust & safety, risk, abuse prevention, or adjacent domains.
• Experience building fraud detection or risk decisioning systems — rule engines, scoring systems, policy frameworks, or investigation platforms.
• Strong backend engineering fundamentals: Design scalable, event-driven systems and reason about distributed architecture tradeoffs. Debugged production issues across multiple layers of the stack.
• Stakeholder partnership: Partner closely with end-users and cross-functional stakeholders to discover problems, validate solutions, and iterate. Communicate clearly and turn ambiguous needs into shippable work.
• Good judgment and prioritization: Break down vague problems (e.g. "our dispute rate is climbing") into concrete plans.

Nice to Have

• Experience with PHP/Laravel, or similar MVC framework (Ruby on Rails, Django, etc.). Laravel is a plus.
• Experience leading a project or feature area end-to-end.
• Experience with React/TypeScript on the frontend.
• Familiarity with Stripe's APIs, payments, disputes, Radar, or similar payment processor integrations.
• Experience building tools for operations or support teams (internal tooling, case management, review queues).
• Background in fundraising, nonprofit tech, or marketplace platforms.
• Exposure to event-driven architectures (CDC, Kafka, event sourcing) for real-time risk signal processing.
• Experience working in AWS (EKS/Kubernetes, RDS, etc.).