Senior Product Security Engineer

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. Affirm values information security as a critical part of the company’s continued success. Our mission is to make information security programmatic and cultural in Affirm, enabling the company to succeed in building honest financial products.

The Security team posture increases security and reduces risk while securely enabling access to information for those who need it! The Senior Product Security Engineer candidate will have experience building and architecting software as part of a larger team. The ideal candidate will work effectively with product and engineering teams to evaluate and influence product requirements, design, and implementation to improve the security of Affirm’s products.

What You'll Do Partner with Affirm product teams to ensure that security is included in every phase of the product development lifecycle. Conduct threat modeling and architecture reviews to ensure threats are understood, documented, and mitigated. Review and analyze product source code to identify security vulnerabilities and provide recommendations for secure implementation.

Seek out opportunities to automate processes when appropriate. Identify emerging classes of vulnerabilities and developing solutions for them before they’re a problem. Assist product teams in the development of security focused test cases to