Demo

IT Systems Administrator

Millennium Space Systems
El Segundo, CA Full Time
POSTED ON 1/13/2026
AVAILABLE BEFORE 3/16/2026
Company Overview

Millennium Space Systems, A Boeing Company delivers affordable, high-performance space systems for exacting customers. At Millennium, you will be part of a close-knit team working on exciting technological problems. We work in an open environment where ideas are shared across all disciplines, and there are ample opportunities for advancement based on excellence. Superstars are welcome.

At Millennium, we innovate and collaborate to make the world a better place. From the seabed to outer space, you can contribute to work that matters with a company committed to fostering an environment for every teammate that's welcoming, respectful and innovative, with great opportunities for professional growth. Find your future with us.

Job Summary

We are seeking a highly motivated, results-oriented, well-rounded, and security-minded IT Systems Administrator to join our team. IT Systems Administrators are responsible for maintaining, configuring, updating, and integrating our secure enterprise and air-gapped systems with a complex variety of operating systems, software applications, and hardware. You will work with collaborative teams of peers that specialize in maintaining compliance standards that keep our systems updated and secure.

This position's internal job code is System Administrator. Our team is currently hiring for a level 4.

Responsibilities

The IT Systems Administrator is responsible for effective provisioning, installation/configuration, operation, and maintenance of systems hardware and software and related infrastructure. This individual participates in technical research and development to enable continuing innovation within the infrastructure. This individual ensures that system hardware, operating systems, software systems, and related procedures adhere to organizational policies.

Job Duties Include

  • Expected to provide Tier II and below support
  • Manage system installation, configuration, upgrades, and updates on secure networks
  • Maintain documentation for system operations, changes, and procedures
  • Provide technical support and interact with customers in-person, by email, or by response to tickets
  • Escalate tickets, tasks, and problems as required
  • Monitor systems and resolve issues to prevent costly downtime
  • Other job duties as assigned

Minimum Qualifications

  • Must be able to obtain and maintain an 8570 compliant IAT Level 2 or higher certification, such as CompTIA Security or higher
  • Minimum of 5 years of experience as an IT Systems Administrator or related role
  • Experience with Microsoft Windows Server and Desktop Operating systems
  • Experience with troubleshooting, updating, and upgrading Microsoft applications (Outlook, Word, Excel, Project, etc)
  • Experience with Active Directory, DNS, Group Policies, Print Management
  • Experience with configuring and applying group policies in accordance with industry compliance standards (JSIG, DISA STIGS, NIST, CIS, etc)
  • Experience creating, securing, and maintaining user profiles, computer accounts, and groups in Active Directory and various software applications
  • Experience with maintaining multiple virtual machines and virtual environments (VMware)
  • Experience with backup and recovery procedures
  • Experience with upgrading and patching various operating systems and applications (Windows, Windows Server, and Red Hat)

[*All Experience Must Be Hands-On*]

  • This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Security Clearance Post-Start is required.

Preferred Qualifications

  • Experience with Linux operating systems
  • Familiarity with Cisco and Palo Alto switches and firewalls
  • Experience with VEEAM Backup Suite
  • Familiarity with Windows and Linux integration
  • Ability to create technical documentation to train end users
  • MCSA certification

Summary Pay-Range

Please note that the salary information shown below is a general guideline only of what is reasonably expected to be paid for the position. Salaries are based upon candidate experience and qualifications, as well as market and business considerations.

  • Level 4: $116,450 - $171,250

Before Applying, Please Note

Millennium is DDTC-registered, ITAR-compliant Company. This position is located at a facility that requires special access. Applicants MUST be U.S. citizens and eligible for a security clearance. Additionally, applicants must be willing to apply for and maintain a security clearance. We encourage all interested candidates to apply for any open position for which they feel they are qualified.

Applicant Privacy Policy

Mandatory Security Clearance and Access Process Disqualifying Criteria

Salary : $116,450 - $171,250

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