Senior Product Security Engineer
Plaid, Seattle Office +2
The role
- Lead security architecture and design reviews for high-priority Plaid products, working directly with engineering and product teams from early development through launch.
- Conduct threat modeling and technical security assessments of complex applications, APIs, distributed systems, and product workflows to identify material security risks.
- Evaluate authentication, authorization, trust boundaries, sensitive data flows, and business logic to identify potential vulnerabilities and abuse cases.
- Review application code, investigate security weaknesses, and validate that proposed fixes address the underlying risks.
- Assess security implications of new technologies and product capabilities, including AI-powered applications and agentic workflows.
- Partner with engineering leadership to prioritize material security risks, agree on mitigations, and track them through remediation or approved risk acceptance.
- Identify recurring security weaknesses, define reusable security requirements and secure design patterns, and partner with engineering teams to implement preventive controls.