System Administrator

Launch Your Next Mission with Leidos! Do you enjoy solving technical challenges, keeping mission-critical systems running at peak performance, and delivering exceptional customer support? Leidos is seeking a Mid-Level Systems Administrator / Helpdesk Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an exciting opportunity to work on a high-impact program where your technical expertise directly enables national security missions. As part of a collaborative and innovative team, you'll provide hands-on system administration, end-user support, and infrastructure maintenance while helping ensure our customers have the reliable technology they need to accomplish their mission. If you're passionate about technology, customer service, and continuous learning, we want to hear from you! Note: Candidate will need to commit to covering the morning shift starting at 6 AM EST or covering the evening shift working until 10 PM EST. Position may be performed in the following locations below. Please note Gaithersburg, MD is the program’s primary work location. Gaithersburg, MD Alexandria, VA Chantilly, VA Englewood, CO St. Louis, MO Tucson, AZ Clearance Level Required: Active Top Secret/SCI with the ability to successfully pass a Polygraph examination. Primary Responsibilities Provide Tier 1 and Tier 2 helpdesk support for users, resolving hardware, software, network, and system-related issues in a timely manner. Install, configure, maintain, and troubleshoot Windows and Linux workstations and servers. Manage user accounts, permissions, 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. Install software updates, security patches, and operating system upgrades in accordance with 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 resolve complex technical issues. Support system backups, disaster recovery activities, and configuration management processes. Assist with workstation deployments, hardware refreshes, asset management, and inventory tracking. Participate in on-call support and scheduled maintenance activities as required. Oversee and maintain automation scripts and infrastructure as code (Ansible, PowerShell, Bash, etc.). Maintain system documentation, configuration baselines, and support CM and RM activities. Participate in security audits, incident response, and operational readiness activities. Contribute to continuous process improvements that enhance customer experience and operational efficiency. Basic Qualifications US citizenship is required per contract. Bachelor's degree in Computer Science, Engineering, Information Technology, or related discipline and 4-8 years of prior relevant experience or Master's with 2-6 years of prior relevant experience. 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. Experience 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. Preferred Qualifications Experience supporting an Intelligence Community customer or GEOINT missions. Familiarity with DevOps tools and pipelines (Git, Jenkins, Docker, etc.). Knowledge of enterprise backup solutions, DNS, DHCP, Active Directory, and PKI. Strong troubleshooting and root cause analysis abilities. Ability to work independently while collaborating effectively across technical teams. Strong organizational skills with attention to detail and documentation. Adaptability and willingness to learn new technologies in a dynamic environment. #Chinook #ASBA If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting: August 4, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: $73,450.00 - $132,775.00 Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. #J-18808-Ljbffr