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System Administrator, Senior

Job in Columbia, Howard County, Maryland, 21046, USA
Listing for: Booz Allen Hamilton
Part Time position
Listed on 2026-07-03
Job specializations:
  • IT/Tech
    Cybersecurity, Unix/Linux, Systems Administrator
Salary/Wage Range or Industry Benchmark: 77600 - 176000 USD Yearly USD 77600.00 176000.00 YEAR
Job Description & How to Apply Below

Overview

We are looking for a System Administrator to design, deploy, and maintain Cross Domain Solutions for an enterprise environment supporting critical cybersecurity mission customers for the Department of Defense.

Responsibilities
  • Design and deploy infrastructure using latest technologies.
  • Recommend technologies and strategies to improve platform security, stability, reliability and compliance with security controls.
  • Propose architecture changes to improve speed and performance.
  • Provide customers with insights through monitoring and performance management.
  • Identify problem areas and opportunities for improvement on mission critical network.
  • Translate metrics into actionable information and explain meaning to the team.
  • Share expertise through leadership and mentoring, helping the team solve challenges and develop new methodologies.
  • Lead modernization efforts to meet customer needs.
Requirements
  • 3+ years of experience with Red Hat Enterprise Linux or CentOS.
  • Experience with GIT.
  • Experience managing virtual machines and VMware ESXi.
  • Knowledge of Linux firewalls, RPMs, networking configuration, and DNS.
  • TS/SCI clearance with polygraph.
  • Bachelor’s degree in CS or IT field and 5+ years of experience with systems or network administration, or 10+ years of experience in lieu of a degree.
  • Ability to obtain DoD 8570.1 IAT Level II Compliant Certification within 60 days of start date.
Preferred Qualifications
  • Experience with AWS.
  • Experience managing systems using Infrastructure as Code technologies (Salt, Ansible, Puppet, Power Shell, Chef, Terraform).
  • Experience with Python.
  • Experience with Apache NiFi or Niagra Files.
  • Knowledge of bi-directional network transfer systems.
  • DoD 8570.1 IAT Level II Compliant Certification.
Clearance

Applicants must obtain TS/SCI clearance with polygraph and be subject to a security investigation.

Compensation

Salary range: $77,600.00 to $ (annualized USD). Salary determined by multiple factors including location, experience, and contract requirements.

Benefits

Health, life, disability, financial, and retirement benefits; paid leave; tuition assistance; and other work‑life programs. Full‑time and part‑time employees working at least 20 hours a week are eligible for Booz Allen’s benefits programs.

EEO Statement

All qualified applicants will receive consideration for employment without regard to disability, veteran status or any other protected status in accordance with federal, state, and local law.

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Position Requirements
10+ Years work experience
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