Senior Platform Security Engineer

Overview

Join the Senior Platform Security Engineer team at Affirm
. The Security team strengthens risk posture while enabling secure access for the organization. Ideal candidates possess extensive experience building tooling and infrastructure for securing technical resources across a large team.

• Drive infrastructure, network and perimeter security initiatives for hardening and segmentation.
• Work across multiple engineering functions and organizations to advocate for security practices.
• Influence, align and implement security features across engineering teams.
• Design and develop scalable solutions across multiple domains.
• Configure and implement cloud security services including identity, access, detective controls, infrastructure protection and data protection.
• Specify, standardize, configure and validate access controls across cloud services and integrate security tooling into existing infrastructure.
• Develop security software configurations and improve tool functionality over time. Implement security controls across data infrastructure (S3, Dynamo
  
  DB, RDS, Snowflake).
• Decompose large cross‑team projects into individual tasks, manage scope and drive project closure.

• Track record of tackling difficult, ambiguous challenges and driving to success.
• Adaptability in a complex, ever‑changing environment balancing security risks and business agility.
• Strong knowledge in infrastructure operations (networking, systems, storage), Corporate IT and technical trade‑offs between short and long‑term security decisions.
• Hands‑on experience deploying infrastructure in a Kubernetes environment.
• Experience developing and deploying cloud services using Terraform.
• Understanding of auditing usage and access to AWS cloud services.
• Experience managing security tooling such as Wiz, Auditbeat, Crowd Strike Falcon EDR, AWS System Manager Agent.
• BS degree in a related field; MS degree is a plus.

Pay grade: N. Equity grade:
6. Base pay range: $150,000 – $200,000 per year. Total compensation may include monthly stipends for health, wellness and tech spending, and potential equity rewards. 100% subsidized medical coverage and other benefits are available.

Affirm is a remote‑first company. Most roles are fully remote; some may require occasional on‑site work at an assigned office.

• Full medical coverage for employees and dependents.
• Flexible Spending Wallets for technology, food, lifestyle and family expenses.
• Competitive vacation and holiday schedules.
• Employee Stock Purchase Plan (ESP P) enabling discounted share purchases.

Affirm is proud to provide an inclusive interview experience for all, including people with disabilities. Reasonable accommodations are available during the hiring process. For U.S. positions that could be performed in Los Angeles or San Francisco, affirmative applicants with arrest and conviction records will be considered in accordance with the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance.

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