Staff Product Security Engineer

TL;DR

Staff Product Security Engineer (Fintech): Architecting and implementing security measures across the product development lifecycle with an accent on threat modeling, secure code analysis, and cloud-based service security. Focus on driving cross-team security initiatives, automating security processes, and ensuring compliance in a regulated financial environment.

Location: Must be based in Canada

Salary: $178,000 - $228,000 CAD

Company

Affirm is a financial technology company reinventing credit by providing flexible, transparent payment solutions without hidden fees.

What you will do

• Partner with product teams to integrate security into every phase of the development lifecycle.
• Conduct threat modeling and architecture reviews for complex, distributed products.
• Analyze source code to identify vulnerabilities and provide actionable remediation recommendations.
• Develop and implement automated security solutions to address emerging threat classes.
• Advise on business security requirements and enforce security-focused test cases.
• Manage scope and drive cross-team projects toward successful closure.

Requirements

• Must be based in Canada
• Deep understanding of web application architecture and design principles.
• Experience with modern software development and delivery for cloud-based services (Python, Kotlin, Java, AWS, Azure).
• Knowledge of common security flaws (OWASP, SANS) and authentication mechanisms (SAML, OAuth2).
• Experience working in PCI or other regulated environments.
• Proven ability to conduct threat models for complex, distributed systems.
• BS degree in a related field or equivalent practical experience.

Culture & Benefits

• 100% subsidized medical, dental, and vision coverage for employees and dependents.
• Generous flexible spending wallets for technology, food, and lifestyle needs.
• Competitive vacation and holiday schedules.
• Employee stock purchase plan (ESPP) with discount.
• Remote-first work environment with occasional office collaboration.