Senior Linux System Administrator

The Test and Training Enabling Architecture (TENA) program at Leidos is looking to add a Senior Linux System Administrator. Our mission is to develop tools for the United States Department of Defense test and training communities, to increase the speed of the development cycle, to get capabilities to the warfighter more rapidly. The System Administrator will work within a team engineers, developers and system administrators adding new capabilities to our enclaves, as well as ensuring the existing systems are secure and performing as intended. This position is located in Alexandria, VA and you must be able to obtain a Secret level clearance to be considered for this position. The ability to support off-hours system administration on evenings and/or weekends (as needed) is required. In addition this position will allow the ability to work remote 2-3 days a week but the need to be on site on a weekly basis is required. Primary Responsibilities: Provide support for installing and maintaining Linux servers using tools such as Ansible, Kickstart etc. Provide support for troubleshooting from OS to application-level issues Manage networking equipment including switches, routers and firewalls Manage configuration and maintenance of core enclave infrastructure services including DCHP, DNS, e-mail, Apache Web Servers, Tomcat application servers, Postgresql database servers Configure and monitor security tools required for DoD networks Participate and contribute to design discussions related to improving the capabilities, performance and security posture of new and existing services Basic Qualifications: 12 years of relevant experience doing system administration on Linux servers, networking equipment and security monitoring equipment. In addition a Bachelor’s Degree but additional experience maybe considered in lieu of a degree. 8 years of experience providing System Administration to DoD IT systems IAT Level I: A , CCNA-Security, Network , SSCP, Security CE US Citizen with the ability to obtain and maintain a Secret clearance Ability to work evenings and weekends as needed Preferred Qualifications: 6 years of experience providing Red Hat System Administration to DoD IT systems IAT Level III: CASP CE, CCNP Security CE, CISA, CISSP, GCED, GCIH, CCSP Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) CompTIA Linux or Linux Professional Institute LPIC-1 Experience leading a team 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: September 25, 2025 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: Pay Range $126,100.00 - $227,950.00 The 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. Leidos Leidos is a Fortune 500® innovation company rapidly addressing the world's most vexing challenges in national security and health. The company's global workforce of 47,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenue of approximately $15.4 billion for the fiscal year ended December 29, 2023. For more information visit www.Leidos.com. Pay and Benefits 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. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to spam.leidos@leidos.com. Commitment and Diversity 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.

Salary : $126,100 - $227,950