Information Systems Security Manager (ISSM)

Firestorm • San Diego, CA

6d • $140,000 - $180,000 • Onsite

About The Position

Firestorm Labs is seeking a hands-on Information Systems Security Manager (ISSM) to join our team in San Diego. This role owns day-to-day IT systems administration and endpoint security operations, while also serving as the front-line point of contact for facility clearance (FCL) administration, personnel security processing, and classified/CUI handling procedures. You'll work closely with executive leadership and outside compliance support on the company's broader security program. This is a great fit for someone who wants to build deep, hands-on expertise across both IT security operations and industrial/personnel security compliance at a fast-growing defense manufacturing company, with a clear path to grow as the security function matures.

Requirements

• Bachelor's degree in Computer Science, Information Systems, Cybersecurity or a related field; relevant experience may be substituted in lieu of a degree
• U.S. Citizenship required due to ITAR regulations, with the ability to obtain and maintain a DoD security clearance
• 6+ years of experience in an IT support or systems administration role
• 3+ years of experience using Microsoft Entra ID in cloud-only environments, including account setup, groups, and access troubleshooting
• Strong understanding and hands-on experience with Active Directory (user/group management, policies, and permissions)
• Proficiency supporting Office 365 applications and related cloud services
• Experience supporting MacOS and Linux (Ubuntu preferred) in managed environments
• Working knowledge of networking fundamentals including VPNs, DNS, VLANs, DHCP
• Clear, professional communication with both technical and non-technical stakeholders, including government points of contact

Nice To Haves

• Certification such as Security+, Industrial Security Professional (ISP), Azure Administrator, or equivalent
• Prior experience supporting a Facility Security Officer (FSO) or facility clearance (FCL) administration
• Familiarity with NISPOM, personnel security processing, and classified/CUI handling requirements
• Experience with regulatory frameworks such as CMMC and NIST 800-171
• 4+ years direct experience administering a Microsoft 365 GCC High environment
• Prior experience in a startup or fast-paced defense/aerospace environment
• Active DoD security clearance; Secret or higher

Responsibilities

• Administer and troubleshoot Microsoft Azure Government GCC High, including Entra ID, Intune, Sentinel, and Defender
• Manage user accounts, permissions, and system access in Active Directory and related platforms
• Monitor and respond to alerts in Microsoft Defender and Sentinel to identify deficiencies and vulnerabilities; support POA&M remediation efforts
• Implement and maintain endpoint security, patching, and Intune policies
• Troubleshoot hardware and software issues across Windows, MacOS, and Linux environments
• Provision and configure laptops, tablets, and phones, including software installation and onboarding
• Provide first-line technical support to onsite and remote employees, including VPN, DNS, VLAN, and DHCP connectivity issues
• Administer and support collaboration platforms including Microsoft 365, Confluence, Jira, and engineering tools
• Maintain accurate records of IT assets, licenses, and configurations
• Support facility clearance (FCL) administration and serve as the day-to-day point of contact for DCSA/NISS matters as the company's designated FSO
• Support procedures for classified material and Controlled Unclassified Information (CUI) handling and storage in compliance with NISPOM
• Assist with personnel security operations, including background investigation coordination and clearance status tracking
• Participate in the company's insider threat program, including monitoring and reporting
• Support delivery of security education, awareness, and training programs for employees and contractors
• Support incident response coordination for security-related events under the company's established incident response plan
• Assist with security assessments when vetting new tools, services, or vendors
• Support compliance efforts across NIST SP 800-171, DFARS 252.204-7012, CMMC, and related frameworks

Benefits

• Comprehensive medical, dental, and visions plans
• 401(k) Retirement Savings Plan
• Equity grants
• Unlimited PTO
• Extremely generous company holiday calendar, including holiday hiatuses in July & December
• Generous Parental Leave
• Lifestyle Spending Account
• FSA
• DCFSA
• HSA
• Hospital Indemnity insurance
• Critical Illness insurance
• Accident insurance
• Basic Life/AD&D, short-term and long-term disability insurance, 100% covered by Firestorm
• Option to purchase additional life insurance for you and your family
• Mental Health Resources: free mental health resources 24/7 including therapy and more
• Additional work-life services, such as free legal and financial support

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level