Senior Systems Administrator

Description The National Security Sector at Leidos is seeking a Senior System Administrator to join a dynamic team based in Tysons Corner, VA. This exciting opportunity allows you to apply your expertise in system administration and software programming while supporting a small team responsible for managing a wide range of mission-critical systems.Key Details:Work hours fall within the core shift range of 0600–1600On-call duty is required one weekend every six weeksCandidates must successfully complete a medical clearance process prior to starting work.Primary Responsibilities include: Management of medium-to-large-scale government data warehouses or digital archive managementInterface control document (ICD) implementation and maintenance of government systems interconnectsEnsure Security compliance requirementsProvide on-site tiered help desk support to user baseWill work onsite in a SCIF with operational pager/cell phone duty rotationContribute technical insights to guide the system's cloud hosting strategyDevelop monitoring dashboards to alert on software operational statusMetrics, performance reporting, system health and status of medium to large scale storage and processing systemsStorage maintenance and capacity planningHW/SW troubleshootingMicrosoft WSH programmingLINUS shell programmingScript programmingAudit log management and administrationProvide expert support in the administration and maintenance of the Enterprise Linux infrastructureProvide support in information security system requirements and design applicable to Linux hostsManage Linux systems using Puppet or other config management tools; handle patches and mitigate IAVA vulnerabilitiesImprove system operations and functionality, monitoring, and optimization of the hardware platform. Implement STIG guidance to support ATO sustainment efforts Troubleshoot and resolve network, automation pipelines, and infrastructure issuesCloud VPC, Compute Services, Storage Management, Monitor and Observability, Identity and Access managementExperience in Database Administration and system monitoring, including Linux command-based troubleshootingProvide technical input, assist in the maintenance of system administration, security policy/procedure documentationManage and troubleshoot Configuration Management tools, covering Linux and Database Administration tasks such as configuration and upgradesDocument system configuration, external service dependencies, optimal settings (Authentication/Authorization/Accounting (AAA), resource allocation), and standard procedures (startup/shutdown, backup, upgrade)Required Clearance: Active and in-scope TS/SCI with polygraph required for consideration. US citizenship is required.Minimum Education, Skills, and Experience:Requires a bachelor’s degree and 8+ years of experience OR master’s degree and 6+ years of experience.   Additional related experience and certifications may be considered in lieu of degree.   5+ years of technical experience in maintaining automated system platforms for the intelligence community. Demonstrated success with Linux, database system administration, and scripting Experience operating , maintaining HW, SW, Cloud Components, LANs, WANs, SAN, and NAS.Open source and custom application deployments and maintenance experience to include ATO and patching for cyber compliance Communicate effectively with customers and team in written and oral forums. Be familiar with the complexity of issues and be able to estimate the level of effort times and be able to provide appropriate documentation and upkeep log files.Degree or equivalent demonstrated experience in a technical field. Experience with or understanding of authentication and authorization A&A fundamentals Software: Apache Webserver, PostGres SQL/PostGIS, OMAR, OSSIM, RedHat LINUS, FreeIPA,  Microsoft Windows Server, Microsoft Office, Microsoft Internet Information Service, OGC Web Services (WMS, WFS, WCS), Google Earth Client, Geospatial productsHardware: Network Attached Storage (NAS) deployment and maintenance; Firewall, switch and router installation, deployment and maintenance; serverAdditional Skills desired:Familiarity with common industry software tools, concepts, and systems administration  Familiarity with Data management, Data integration, User Interface, Hardware, Databases  Strong Linux skills and familiarity with hybrid cloud/on-prem architecture, AWS, C2S, etc. CI/CD development experience with Jenkins, GitLab, Ansible, Kubernetes, OpenShift, and/or Docker Certifications: Microsoft Certifications, Cisco Network Certifications, Linux Certifications, AWS Certifications, Geospatial certificationsCome break things (in a good way). Then build them smarter.We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”Original Posting:July 28, 2025For 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:Pay Range $89,700.00 - $162,150.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Created: 2025-09-21