Staff Engineer

What You’ll Do

• Build the fraud platform. Design and implement fraud detection and risk decisioning systems, rule engines, scoring pipelines, event-driven risk signals, and backtesting infrastructure.
• 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 your manager, product, operations and leadership stakeholders to identify where we're exposed, propose solutions, and help prioritize the roadmap.
• Think like an adversary. Develop a deep understanding of fraud vectors in the fundraising and payments space: stolen cards, synthetic identities, friendly fraud, campaign abuse, and help us build systems that adapt as threats evolve.
• Strengthen payment integrity. Work across our payment systems to harden the transaction lifecycle against abuse.
• Mentor and grow the team. Help engineers on your team develop Trust & Safety domain expertise. Share what you know, pair on hard problems, and help raise the bar for how the team approaches adversarial challenges.

Requirements

• 8+ years of software engineering experience, with meaningful time spent in adversarial domains — fraud, trust & safety, risk, abuse prevention, or similar.
• Experience building fraud detection or risk decisioning systems — rule engines, scoring systems, policy frameworks, or investigation platforms.
• Strong backend engineering fundamentals. You can design scalable, event-driven systems and reason about distributed architecture tradeoffs.
• Collaborative influence. You've helped drive technical initiatives across multiple teams and stakeholders.
• Good judgment and prioritization. You can take a vague problem like "our dispute rate is climbing" and work with your team to break it down into a concrete plan with clear next steps.

Nice to Have

• Experience with PHP/Laravel, or a similar MVC framework like Ruby on Rails, Django, etc.
• Experience leading projects or small teams as a senior IC (e.g., technical lead/staff-level leadership)
• 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 where T&S challenges involve campaign legitimacy, donor protection, or platform abuse.
• Exposure to event-driven architectures (CDC, Kafka, event sourcing) for real-time risk signal processing.
• Experience working in AWS (EKS/Kubernetes, RDS, etc.).