System Administrator TS/SCI Polygraph

Leidos Inc; Alexandria (VA); On-site; USD 73,000 - 133,000; Full time

Benefits offered by this job

PTO and holidays

401K with company match

Flexible schedules

Education and training support

Job summary

Leidos is seeking a Systems Administrator to support the MD customer’s mission from the Alexandria, VA area. The role involves daily system administration and O&M for a complex distributed network, with primary focus on setting up and maintaining a company site in Alexandria.

You will work in a SAFe environment, helping sustain computing and network systems, and collaborating with senior technicians across multiple teams to ensure incident resolution and security compliance.

Qualifications

• BS and 4–8 years of prior relevant experience or Masters with 2–6 years of prior relevant experience.
• Experience with IT/software programs using complex equipment/systems (e.g., switches/routers/LANs, Windows/Linux, VMware).
• Data Center design and configuration experience (rack/stack, power, placement).
• Experience with IT system optimization, monitoring, and troubleshooting.

Responsibilities

• Handle IT Help Desk calls and emails professionally and timely.
• Use enterprise monitoring to identify alarms and respond to incidents.
• Troubleshoot hardware/software issues including network connectivity.
• Provide technical assistance across departments and publish status updates.
• Report outages and coordinate with users as needed.
• Manage IAVAs and system security scanning per SSPs.
• Create and maintain documentation for incident resolution.
• Support IT enhancements and project work.

Skills

Help desk support

Network troubleshooting

Windows

Linux

VMware

On-call availability

Education

Bachelor's degree

Master's degree

Tools

VMware

Windows

Linux

Job description

Description

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

• 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.

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 $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline onlyand 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 an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. 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 at www.leidos.com/careers/pay-benefits.

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.