System Administrator TS/SCI Polygraph

leidos· 00100 LEIDOS, INC.
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📍 Alexandria, VAFull time💰 USD 73K–133K

About this role

Leidos has a new and exciting opportunity for a Systems Administrator in our INTEL SECTOR- Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!  

We have an exciting opportunity for a Systems Administrator to support our MD customer’s mission. Important: the work location here will be in Alexandria, VA. You will join a high performing agile team using the Scaled Agile Framework (SAFe) methodology to support a highly complex and fast-paced program. The selected candidate will be responsible for performing daily system administration and O&M support activities in support of a complex network environment with geographically distributed systems. The position entails the daily sustainment of existing computing and network systems at various locations, with a primary focus on the set-up and maintenance of a company site in Alexandria.

Primary Responsibilities

The selected individual will be responsible for monitoring infrastructure systems, applications, and processes, and for ensuring that all issues are identified, tracked, and resolved in a timely manner. She/he will provide support for various infrastructure systems and will respond to hardware and software incidents impacting local users. She/he will work with and take direction from senior System Administrators, at times working with them remotely from other locations.

Responsibilities include:

  • Handling IT Help Desk calls and emails, ensuring all interactions are handled timely and in a professional manner.

  • Utilizing enterprise monitoring solutions to identify alarms that have been triggered against the environments.

  • Working with more senior technicians in identifying, troubleshooting, and correcting hardware and software issues including network connectivity.

  • Providing technical assistance to companion work groups in support of overlapping projects and maintaining good inter-departmental relations.

  • Communicating with users and publishing status of any system outages, as needed.

  • Proactively contacting customers when infrastructure processes are significantly delayed or may impact their ability to complete a business function on time.

  • Executing the process for managing information assurance vulnerability alerts (IAVAs) and system security scanning for equipment suites in accordance with the System Security Plans for these systems to identify and remediate IAVAs rapidly and accurately.

  • Participating in the creation and ongoing maintenance of documentation to ensure clear, concise, and accurate information is readily available to assist with incident resolution.

  • Undertaking project work and providing support for implementing IT enhancements. 

Required Qualifications

  • BS and 4 – 8 years of prior relevant experience or Masters with 2 – 6 years of prior relevant experience. Additional experience may be substituted for a degree.

  • Must have experience working on an IT/software program that utilizes complex equipment/systems (ex. Network Switches, Routers, LANs, & cabling, Windows/Linux operating systems, VMware, etc.).

  • Must have experience with Data Center design and configuration (e.g., rack and stack, power, placement, etc.).

  • Must have experience or familiarity with IT system optimization, monitoring, and/or other technical set-up and troubleshooting.

  • Must have direct, hands-on experience helping users in an IT or similar customer service capacity.

  • Must be capable of responding very quickly to customer inquiries in a clear, concise manner, to include providing detailed and comprehensive status reports and follow-ups; including while off duty, on an as-needed on-call basis.

  • Must be able to travel up to 10% of the time if required.

  • Must report to work in the Annapolis Junction, MD office at least once per month.

  • Clearance Required: Must have TS/SCI with Polygraph.

Preferred Qualifications:

  • Experience or familiarity with security standards, software architectures, and/or Network security technologies (Multiple Domain, PKI, SSP, Vulnerability Assessment, etc.).

  • Experience supporting a software configuration management and development environment.

  • Experience working in an Agile Development Environment or on an Agile Team.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today.

CSSKEY

CONMD

careers.leidos.com/CONMD

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:

May 1, 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:

Pay Range $73,450.00 - $132,775.00

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.

Frequently Asked Questions

What is the salary for the System Administrator TS/SCI Polygraph role at leidos?
The listed salary for this System Administrator TS/SCI Polygraph position at leidos is USD 73K–133K. This is an Full time role.
Where is the System Administrator TS/SCI Polygraph position at leidos located?
This System Administrator TS/SCI Polygraph role at leidos is based in Alexandria, VA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the System Administrator TS/SCI Polygraph role at leidos full-time or part-time?
This is listed as a Full time position. It is posted as a System Administrator TS/SCI Polygraph role in the 00100 LEIDOS, INC. department at leidos.
Which team or department does the System Administrator TS/SCI Polygraph at leidos belong to?
This System Administrator TS/SCI Polygraph position is part of the 00100 LEIDOS, INC. department at leidos. See the full job description for more information about the team structure and responsibilities.
How do I apply for the System Administrator TS/SCI Polygraph position at leidos?
Click the "Apply Now" button on this page. You will be redirected to leidos's official application portal hosted on workday where you can submit your application directly.
When was the System Administrator TS/SCI Polygraph job at leidos posted?
This System Administrator TS/SCI Polygraph position at leidos was posted on Jul 22, 2026. Apply as soon as possible — early applications are often reviewed first.
System Administrator TS/SCI Polygraph
leidos · 💰 USD 73K–133K
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