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Job #: R-00119642
Location: San Antonio, TX
Category: Systems Administration
Schedule (FT/PT): Full Time
Travel Required: Yes, 25% of the time
Shift: Day
Remote Type: No Remote
Clearance: Top Secret/SCI
Referral Eligibility: Eligible
Referral Bonus Amount: $5,000
Group: Defense

This job posting is no longer active.

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Are you ready for a rewarding career challenge?

Unleash your potential at Leidos, where we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer’s success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

At Leidos, everything we do is built on our commitment to do the right thing for our customers, our employees, and our communities. Learn more about the values and culture that are the foundations of our business. Our mission is to make the world safer, healthier, and more efficient through information technology, engineering, and science. We offer a robust benefits package including competitive salaries; 401K Retirement Plan; comprehensive medical, dental and vision coverage; flexible work schedule to allow for life/work balance; tuition reimbursement and more.

The Mission
The Leidos Defense Group provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. From scanning for illicit material at ports and borders to predicting future events and instability up to five years in advance, our products help customers make the world safer. To explore and learn more, click here!

If you are ready for your next career move, consider joining Leidos Defense group as we are looking for a Systems Administrator to work at Fort Sam Houston, San Antonio, TX.

This position requires a candidate to hold an active Top Secret SCI (TS SCI) US Government security clearance.

This Systems Administrator position is part of the Leidos team which provides Systems Administration, Satellite Communications (SATCOM), and basic Network Administration services in support of the customer’s Joint Mobile Intelligence Communications System (JMICS) platforms and other functions. These services include operation services to ensure secure, reliable, and uninterrupted availability, as well as design, installation, maintenance, upgrading, replacement, and repair the JMICS and associated systems’ hardware and software components. The supported hardware includes, but is not limited to computers, servers, storage systems, networks, software, satellite antennas and modems, and printers. Additionally, the Systems Administrator will provide hardware, software, and application problems support to customers, as well as work through all types of issues and is capable of running an entire remote site. You will perform hardware maintenance and installations of IT equipment used within classified and unclassified local and wide area networks; apply remote services diagnostics; and install and incorporate new releases, updates, or other changes to COTS hardware and software. Systems Administrator must be able to load cryptographic keys and perform basic troubleshooting on many types of hardware.

Primary Responsibilities

  • Apprise leadership of the operational capability of the JMICS, the status of non-functioning equipment and open action items, and present other topics that have a direct impact on the ability of the JMICS to support the mission.

  • Maintain and operate the JMICS platforms, operate and maintain servers and storage devices, develop operating scripts to support assigned tasks, plan and manage disk space

  • Provide system administration support and execute Active Directory tasks and manage NTFS permissions

  • Perform preventative and remedial maintenance, plan for and respond to service outages and other problems

  • Isolate and resolve complex hardware and software problems involving applications, operating systems, hardware, communications infrastructure, or any combination thereof

  • Troubleshoot, diagnose, and resolve issues with Windows Operating Systems, desktops, laptops, printers, SATCOM equipment, video teleconferences, VOIPs, and other standard office equipment

  • Participate in the organizations change management process, and execute Change Management Board (CMB) actions within approved timelines

  • Maintain integrity of the operating systems, provide recommendations and implement customer CMB approved modifications of the JMICS platforms

  • Recommend new technologies for integration into communications and network infrastructures

  • Install, monitor, maintain, support, and optimize all network hardware, software, and communication links.

  • Conduct system software and hardware upgrades including planning and scheduling, testing, and coordination of workstation and server setup and administration

  • Complete basic and advanced hardware and infrastructure work as directed, including but not limited to: run and manage cables, install workstations, check UPS systems, replace systems hardware components and provide basic printer maintenance

  • Monitor and maintain continuity of system software licensing and maintenance agreements

  • Participate in or lead special projects and day-to-day operations as needed or assigned

  • Track all work in designated ticketing system (such as Remedy), ensure completeness and accuracy of tickets, and escalate issues as needed

  • Provide in person and remote support to customers individually or as part of a team across multiple networks and multiple facilities/locations

  • Create and manage accounts, set up workstations, and map drives and printers for end users

  • Schedule video teleconferences and de-conflict scheduled conferences as needed

  • Troubleshoot, diagnose, and resolve issues with software, such as MS Office and Outlook, Adobe, Java PKIs, and other customer applications

  • Provide IA support, software updates, and assist the ATO/ATC process.

  • Apply patches, STIGs, and updates to workstations both locally and remotely as well as using PowerShell RDP

  • Provide technological responses that prevent, detect, and respond to cyber threats and conduct research and analysis of actionable cyber threats requiring a rapid response.

  • Provide basic networking support, including but not limited to: analyze and resolve network hardware and software problems, support transition and migration of networks and assist with developing network addressing schemes; perform administration support for local and wide area networks, including routers, switches, gateways, access points, network interface cards, networking cables, modems, adapters, firewalls, and other related network hardware; troubleshoot, diagnose, and resolve issues with Cisco network devices and LAN functionality and connectivity

  • Maintain continuous control and accountability of all hardware and software operated and maintained by the program personnel that is entered into and removed from classified facilities and shall provide an inventory report for all Communications Security (COMSEC), hardware, and software while in programs possession during working hours.

Basic Qualifications

  • Bachelor's degree in a relevant field with at least eight to twelve years of related experience. Additional years of experience may be considered in lieu of a degree

  • Active TS SCI security clearance

  • Basic SATCOM experience and Network Administration experience

  • Active 8570.1=M IAT II (or higher) Baseline Certification, such as: Security+ICE or higher

  • Active computing environment certification, such as: Server+, CCNA:R&S, Microsoft Windows Server Certification

Preferred Qualifications

  • TACLANE experience is a plus

Pay Range:

Pay Range $66,300.00 - $119,850.00

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.


About Leidos

Leidos is a Fortune 500® technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, civil, and health markets. The company’s 47,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $14.4 billion for the fiscal year ended December 30, 2022.   For more information, visit

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

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to 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.

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