Senior Product Security Architect

Plaid; San Francisco (CA); On-site; USD 190,000 - 263,000; Full time

Job summary

Plaid is hiring for a Sr. Product Security role in San Francisco. You will lead security architecture and design reviews, perform threat modeling, and assess risks across complex applications, APIs, and AI-enabled workflows.

You will collaborate with engineering and product teams to prioritize mitigations, evolve secure design patterns, and use AI-assisted analysis to strengthen security across Plaid's ecosystem.

Qualifications

• 5+ years of experience in product or application security.
• Experience leading security design reviews and threat modeling.
• Deep understanding of authentication, authorization, trust boundaries, data protection, and vulnerabilities.
• Strong software engineering fundamentals and ability to read code.
• Experience securing cloud-native applications and evaluating system architecture decisions.
• Ability to communicate risks and influence leadership.
• Ability to work independently in ambiguous environments.

Responsibilities

• Lead security architecture and design reviews for high-priority Plaid products from early development through launch.
• Conduct threat modeling and security assessments of complex apps, APIs, distributed systems, and workflows.
• Evaluate authentication, authorization, trust boundaries, data flows, and business logic for vulnerabilities.
• Review code, investigate weaknesses, and verify fixes address underlying risks.
• Assess security implications of AI-powered applications and agentic workflows.
• Partner with engineering leadership to prioritize risks and track mitigations.
• Define reusable security requirements and secure design patterns with engineering teams.
• Leverage AI-assisted security analysis and testing to improve assessments.

Skills

Security architecture

Application security fundamentals

Threat modeling

Code reading

Cloud-native security

Communicating risk

Independent worker

Job description

Plaid is hiring for a Sr. Product Security role in San Francisco. You will lead security architecture and design reviews, perform threat modeling, and assess risks across complex applications, APIs, and AI-enabled workflows.

You will collaborate with engineering and product teams to prioritize mitigations, evolve secure design patterns, and use AI-assisted analysis to strengthen security across Plaid's ecosystem.