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Leidos · 20 hours ago

Senior Systems Administrator

Gaithersburg, MD

Full-time

Onsite

Mid, Senior Level

$92K/yr - $167K/yr

6+ years exp

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. They are seeking a Senior Systems Administrator to manage, secure, and optimize high-performance systems that support intelligence and geospatial initiatives. The role involves leading system operations, mentoring junior administrators, and ensuring the reliability and security of infrastructure.

ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Lead system administration for Linux and Windows-based systems in secure, mission-critical environments

Architect and manage complex server, storage, and virtualization infrastructure (VMware, KVM)

Perform OS installation, configuration, hardening, and patching in compliance with DoD STIGs and agency policies

Monitor and tune system performance, conduct root cause analysis, and resolve complex issues quickly and efficiently

Support backup/recovery strategies, disaster recovery plans, and continuity of operations

Oversee and maintain automation scripts and infrastructure as code (Ansible, PowerShell, Bash, etc.)

Maintain system documentation, configuration baselines, and support CM and RM activities

Lead and support deployment of system enhancements and modernization initiatives for Chinook program

Collaborate with cybersecurity, network engineering, and software development teams to ensure system compliance and performance

Participate in security audits, incident response, and operational readiness activities

Qualification

Linux administrationWindows Server administrationVMwareDoD 8570 certificationCloud platformsAutomation scriptingSTIG complianceSoft skills

Required

US citizenship is required per contract

Bachelor's degree in Computer Science, Engineering, Information Technology, or related discipline and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience

Active Top Secret to be considered with the ability to obtain TS/SCI with Polygraph

DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP)

Experience with cloud platforms (AWS GovCloud, Azure Government) and hybrid cloud environments

Experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server platform system administration

Proficiency with virtualization platforms (VMware, KVM) and management tools

Experience with automation and scripting (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