Senior Systems Administrator Jobs in Los Angeles, CA

Position: IT Systems Administrator (Mid)

This role is responsible for administering and securing the company’s IT environment, including Microsoft 365, endpoint management, identity and access controls, infrastructure reliability, and compliance support in a federal contracting environment. The position also provides escalation-level support for end-user issues and helps maintain operational IT processes such as asset tracking, documentation, and vendor coordination.

Key Responsibilities:

Systems Administration & Infrastructure

• Support Windows-based servers and workstations
• Monitor system performance, backups, and patch management
• Assist with network infrastructure, wireless access points, and VPN connectivity
• Maintain file shares, cloud storage, and collaboration platforms
• Coordinate with external vendors and managed service providers as needed

Cybersecurity & Compliance

• Assist with implementation and maintenance of cybersecurity best practices
• Support compliance efforts related to CMMC, NIST SP 800-171, and other government security requirements
• Monitor security alerts and respond to incidents or vulnerabilities
• Help maintain documentation, policies, and procedures for audits and assessments
• Participate in user cybersecurity awareness training initiatives

IT Operations & Escalation Support

• Provide escalation-level technical support for employees when issues require systems, access, endpoint, or security expertise
• Resolve complex hardware, software, network, VPN, identity, and collaboration platform issues
• Oversee endpoint provisioning, lifecycle management, and secure configuration of company devices
• Maintain accurate asset and inventory records to support security, compliance, and operational planning
• Manage user accounts, permissions, and access controls in Microsoft 365 and Active Directory
• Maintain IT inventory and asset tracking documentation

Documentation & Process Improvement

• Create and maintain technical documentation and standard operating procedures
• Recommend process improvements and technology upgrades
• Support business continuity and disaster recovery efforts

AI & Automation

• Evaluate, deploy, and support AI-powered tools across productivity, security, and operations functions
• Serve as an internal resource for AI tool adoption -- helping staff use AI effectively and responsibly
• Work with leadership to assess AI tools for compliance fit in federal contracting environments

Required Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience)
• 5+ years of IT support or systems administration experience
• Experience with:
• Microsoft 365 Administration
• Windows Server and Windows 10/11 environments
• Active Directory and Azure AD/Entra ID
• Networking fundamentals (TCP/IP, DNS, DHCP, VPN)
• Endpoint management and cybersecurity tools
• Strong troubleshooting and communication skills
• Ability to manage multiple priorities independently
• Practical understanding of AI capabilities and limitations relevant to IT operations, security, and compliance

Preferred Qualifications

• Experience supporting government contractors or federal environments
• Familiarity with:
• CMMC compliance
• SharePoint and Teams administration
• Industry certifications such as:
• CompTIA Security+
• Network+
• Microsoft certifications

Security Clearance: Active Secret

Location: Fully remote; candidates located in the San Diego or Los Angeles area preferred

AOG is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Pay: $90,000.00 - $120,000.00 per year

Security clearance:

• Secret (Required)

Work Location: Remote