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 Python, Java, or Go
• Deep expertise in application security, including secure SDLC integration, SAST/DAST/IAST tooling,
  manual code review, and API security.
• Demonstrated experience securing AI systems, including LLM application security, prompt injection
  defenses, data governance, secure agentic tool use, and emerging AI-specific threats
• Demonstrated expertise implementing AWS security services and best practices (CloudTrail,
  GuardDuty, CloudWatch, Security Hub) at scale across multi-account environments
• Hands-on experience managing WAF platforms (Cloudflare, Akamai, Fastly, AWS WAF or equivalent),
  including custom rule development, not just enabling managed rulesets
• Demonstrated experience leveraging infrastructure as code with tools such as Terraform or Ansible,
  including designing secure module patterns and policy-as-code guardrails
• Experience with identity management protocols (OAuth, SAML, OpenID Connect) and designing
  identity architecture across multiple business units or products
• Deep understanding of secure CI/CD pipeline design, able to define what a good release pipeline
  looks like, why each stage exists, and how to harden against supply chain and pipeline compromise
• Track record of influencing security strategy and roadmap at an organizational level, not just
  executing within a single team
• Relevant certifications such as OSCP, OSWE, OSCE, or CISSP

Depending on the role, your interview and onboarding experience may include in-person components, such as onsite interviews or Launching into Better: LIVE—a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.

For information about our benefits, please visit https://benefitsatfanatics.com/