Leidos is looking for a Mid-Level Systems Administrator / Helpdesk Engineer for the Chinook Program supporting an Intelligence Community customer. This onsite role in Tucson, AZ combines hands-on systems administration with direct end-user support, helping keep infrastructure stable and responsive for mission teams. The position includes a requirement to hold an Active Top Secret/SCI clearance and be available to cover either a 6 AM ET morning shift or an evening shift until 10 PM ET.
What you’ll do
- Deliver Tier 1 and Tier 2 helpdesk support, resolving hardware, software, network, and system-related issues in a timely manner.
- Install, configure, maintain, and troubleshoot Windows and Linux workstations and servers.
- Administer user accounts and access controls using Active Directory and related identity management tools.
- Monitor system performance, identify issues proactively, and implement corrective actions to maintain system availability.
- Apply software updates, security patches, and operating system upgrades according to program and customer requirements.
- Document incidents, service requests, troubleshooting procedures, and system changes using established ticketing systems.
- Collaborate with systems engineers, cybersecurity personnel, and network administrators to address complex technical problems.
- Support system backups, disaster recovery, and configuration management activities.
- Assist with workstation deployments, hardware refreshes, asset management, and inventory tracking.
- Participate in on-call support and scheduled maintenance as required.
- Maintain automation scripts and infrastructure as code using tools such as Ansible, PowerShell, and Bash.
- Maintain system documentation, configuration baselines, and support CM and RM activities.
- Support security audits, incident response, and operational readiness efforts.
- Contribute to continuous process improvements that enhance customer experience and operational efficiency.
Required qualifications
- Active Top Secret/SCI clearance with the ability to successfully pass a Polygraph examination.
- US citizenship is required per contract.
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Bachelor’s degree in Computer Science, Engineering, Information Technology, or related discipline and 4-8 years of prior relevant experience, or a Master’s with 2-6 years of relevant experience. Experience may be exchanged for degree requirements.
- DoD 8570 IAT Level II or III certification (example: Security+ CE, CASP+, CISSP).
- Experience with cloud platforms (AWS GovCloud, Azure Government) and hybrid cloud environments.
- System administration experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server.
- Experience with virtualization platforms and management tools (VMware, KVM).
- Automation and scripting experience (Ansible, Bash, PowerShell, Python).
- Familiarity with STIG compliance, system hardening, ACAS scans, and RMF processes.
- Strong understanding of enterprise networking, identity/access management, and storage concepts.
- Proven ability to troubleshoot, document, and lead systems-related projects independently.
- Experience supporting IC or DoD classified environments.
Technologies you’ll work with
Active Directory, Windows, Linux (Red Hat Enterprise Linux, CentOS), VMware, KVM, Ansible, PowerShell, Bash, Python, AWS GovCloud, Azure Government, STIG compliance, ACAS scans, RMF processes, Infrastructure as code, Security+ CE, CASP+ , CISSP.
Benefits
- Health and Wellness programs
- Income Protection
- Paid Leave
- Retirement
Shift and location
Candidates must commit to covering either the morning shift starting at 6 AM EST or the evening shift working until 10 PM EST.
Onsite location: Tucson, AZ. The position may be performed in the following locations; Gaithersburg, MD is the program’s primary work location:
- Gaithersburg, MD
- Alexandria, VA
- Chantilly, VA
- Englewood, CO
- St. Louis, MO
- Tucson, AZ
Pay range
USD 73,450 - 132,775 per year. Pay and benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave, and Retirement.
Original posting date: September 16, 2026.
For U.S. positions: Leidos reasonably anticipates this job requisition will remain open for at least 3 days, with an anticipated close date no earlier than 3 days after the original posting date listed above, subject to change based on business needs.
