Information Systems Security Officer (ISSO)

Apex is looking for an Information Systems Security Officer (ISSO) to keep assigned systems secure, documented, and ready for customer or third-party review.

What You Will Do

The ISSO will work with system owners, IT, engineering, the SOC, and the Cybersecurity Lead to ensure security requirements are implemented in the environment and supported by evidence.

Why It Might Be a Fit

The ISSO will support ATO activities, SOC 2 Type II, ISO-aligned compliance work, and other customer security requirements as Apex grows.

Requirements

• Active TS/SCI clearance required
• US Citizenship required
• 3 or more years of experience as an ISSO, security compliance analyst, security engineer, system administrator with security responsibilities, or a similar role
• Strong working knowledge of NIST SP 800-171, CMMC Level 2, POA&M management, control evidence, and assessment preparation
• Experience maintaining an SSP or equivalent system security documentation and supporting formal security reviews
• Ability to understand and validate evidence from identity, cloud, endpoint, network, vulnerability, and logging platforms
• Strong follow-through across multiple teams and the ability to write security documentation that clearly reflects what is actually implemented

Benefits

• Shared upside: Receive equity in Apex
• Best-in-class healthcare: 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost
• Comprehensive PTO package to reset and recharge
• Competitive 401(k) plan with generous matching
• 8 weeks paid parental leave plus childcare reimbursement up to $350/day for work-related travel
• Daily catered lunch and unlimited snacks
• Vibrant community: Monthly office socials, pickleball tournaments, run club, and gatherings for you and your family
• Your dream desk setup and all the tools you need to be your most productive self
• World-class Playa Vista office with the benefit of in-person collaboration with amazing coworkers and flexibility to integrate work and life