Haystack
← Back to Jobs
Full time
Technology
LE

Senior Systems Administrator

LeidosMaryland Heights, MO🇺🇸United StatesPosted 27 Mar 2026

Why This Role Stands Out

Advance your career as a Senior Systems Administrator at Leidos, where you'll manage mission-critical systems and gain valuable experience within a reputable organization. This hybrid role offers significant growth potential and competitive compensation, perfect for proactive leaders eager to make an impact in a dynamic, secure environment. You'll thrive here if you are a skilled systems administrator looking to mentor others and contribute to vital national security initiatives.

Quick Overview

Salary
$92.3k - $166.8k/yr
Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Maryland Heights, MO, United States
AnsibleBashPowerShellPythonVMware

Job Description

Senior Systems Administrator | Maryland Heights, MO | Hybrid | $92,300.00 - $166,850.00

We're hiring on behalf of a leading technology solutions provider with a strong focus on national security. This organization offers innovative mission software and technology-enabled services, supporting critical defense and intelligence customers in a dynamic and evolving security landscape. If you thrive in a challenging, fast-paced environment and are passionate about safeguarding national interests through advanced technology, this opportunity is for you.

The Role

  • Lead system administration for both Linux and Windows-based systems within secure, mission-critical environments.
  • Architect and manage complex server, storage, and virtualization infrastructure (e.g., VMware, KVM).
  • Perform OS installation, configuration, hardening, and patching in accordance with strict security guidelines and policies.
  • Monitor and tune system performance, conduct root cause analysis, and efficiently resolve complex issues.
  • Support backup/recovery strategies, disaster recovery plans, and continuity of operations.
  • Oversee and maintain automation scripts and infrastructure as code (e.g., Ansible, PowerShell, Bash).

What You'll Need

  • Bachelor’s degree in Computer Science, Engineering, Information Technology, or a related discipline with 8-12 years of relevant experience, or a Master’s with 6-10 years. Additional experience in lieu of a degree is acceptable.
  • Active Top Secret clearance required, with the ability to obtain TS/SCI with Polygraph.
  • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP).
  • Proven experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server administration.
  • Proficiency with virtualization platforms (VMware, KVM) and management tools.
  • Experience with automation and scripting languages (Ansible, Bash, PowerShell, Python).

What's On Offer

  • Opportunity to work on mission-critical systems that directly impact national security initiatives.
  • A hybrid work environment offering flexibility.
  • Competitive salary range and comprehensive benefits package.
  • Continuous learning and professional development in a cutting-edge tech environment.

Apply via Haystack today!

Similar jobs