Security Engineer
Core
Design, prototype, and deploy technical controls across API, protocol, and product boundaries to address high-impact abuse vectors and translate security findings into control specifications.
Role type
Senior IC security engineer (anti-abuse)
Builds
Automated regression testing suites, attack simulations, and resilient controls for payment, onboarding, identity, and Connect surfaces.
Domain
Fintech / API security / Anti-abuse
Deliverable
production ML models | product features
Required skills
Python, Go, Java, SQL, API-level safeguards, rate-limiting frameworks, authentication and authorization checks, input validation controls, automated testing frameworks
Preferred skills
A/B testing, threat modeling, secure architecture, FT3, MITRE ATT&CK, adversary kill-chain analysis, financial fraud vectors, attacker infrastructure, large-scale data processing with Databricks, Trino, or PySpark
Responsibilities
Design and deploy technical controls to address abuse vectors; Run experiments and A/B tests to evaluate risk reduction; Build automated regression testing suites and attack simulations; Define handoff criteria and operational documentation for transferring controls to product teams.
Seniority
Senior, hands-on IC
