Senior Staff Security Engineer

About the Team

As a Senior Staff Security Engineer on the Fanatics Ecosystems Security team, you'll operate across the full breadth of our security domains, spanning application, AI, cloud, identity, and edge security. You'll lead security reviews, deliver impactful tooling in close partnership with engineering teams, and drive security programs with efficiency and scale.

Responsibilities

• Set the secure architecture strategy across product and enterprise environments, including on-premises, cloud, and containerless environments, establishing patterns and guardrails that other engineers and security teams build on, with a primary focus on application security and AI/ML system security
• Lead threat model reviews for the most complex services and AI systems, including LLM-integrated products, agentic workflows, and model supply chains. (Be an Enabler)
• Define and evolve the org's approach to AI security, securing model pipelines, data and trust boundaries, third-party model integrations, and AI attack surfaces
• Contribute production code to product features and internal security tooling as a hands-on engineering partner
• Act as the technical escalation point across security domains, including AppSec, cloud, identity, CI/CD, and AI, providing efficient security input across multiple product teams and architecture reviews simultaneously
• Drive and scale security coding programs supporting immutable, version-controlled environments through infrastructure as code, detection as code, and other engineering security initiatives
• Mentor senior and staff level engineers, raising the security engineering bar across the organization
• Represent security in cross-functional and executive level architecture discussions, translating technical risk into business impact
• Participate in an on-call rotation to provide 24/7 support for incident escalations, serving as an escalation lead for the most complex incidents

Experience and Skills

• 12+ years of experience in security engineering or a related field, including 6+ years of hands-on software engineering experience
• Required: Strong proficiency developing and reviewing code in one or more programming languages, including Pytho