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From the employer's careers site First seen 25 Oct 2026

IT Systems Administrator

Millennium Space Systems El Segundo, CA On-site mid full-time

Salary

$102,850-$173,650 per year

Apply on Millennium Space Systems

Description

We are seeking a highly motivated, results-oriented IT Systems Administrator to join our team at Millennium Space Systems, a leading developer of small satellites for national security space missions. The successful candidate will be responsible for maintaining, configuring, updating, and integrating secure enterprise and air-gapped systems.

Responsibilities:

  • 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

Requirements:

  • Ability to obtain security certifications such as Security+ or equivalent IAT Level 2 certifications
  • Experience installing, configuring, troubleshooting, and administering Windows Server (2016 or later) and Windows desktop OS (Windows 10 or later)
  • Experience with VMware vCenter, vSphere, and managing virtual machines
  • Experience administering Red Hat Linux based systems
  • US Citizenship and ability to obtain a US Security Clearance

Preferred Qualifications:

  • 5+ years of experience with system administration of complex infrastructure and software development systems
  • Experience maintaining and configuring Active Directory (AD)
  • Experience executing DoD STIGs for operating systems
  • Familiarity with Cisco, Palo Alto, and Juniper switches and firewalls
  • Experience with VEEAM Backup Suite or Power Protect Data Manager

Salary Range:

  • Level 3: $102,850-$151,250
  • Level 4: $128,350-$173,650

Benefits:

  • Competitive base pay and variable compensation opportunities
  • Health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and paid time off

Skills

Required

  • Windows Server
  • Windows desktop OS
  • VMware vCenter
  • vSphere
  • Red Hat Linux
  • Security+

Nice to have

  • Active Directory
  • DoD STIGs
  • Cisco
  • Palo Alto
  • Juniper
  • VEEAM Backup Suite
Apply on Millennium Space Systems