System Administrator TS/SCI Poly

Reposted 19 Days Ago
Be an Early Applicant
Alexandria, VA, USA
In-Office
92K-167K Annually
Mid level
Information Technology • Software
The Role
Provide daily system administration and O&M for a distributed network environment: monitor infrastructure, respond to help desk incidents, perform IAVA remediation and security scans, support data center setup, maintain documentation, participate in projects, be on-call as needed, travel up to 10%, and report monthly to Annapolis. Must hold TS/SCI with Polygraph.
Summary Generated by Built In

Virginia-Based System Administrator

Leidos has a new and exciting opportunity for a System Administrator in our Intel Sector's 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!  

Job Summary:

We have an exciting opportunity for a Systems Administrator to support our MD customer’s mission 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.

  • Initiating IAVA responses and system security scans, completing remediation, and extending IAVA patches and security updates on various IT and network systems.

  • 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 degree in Computer Science, Information Technology, or a related technical field and at least 4 years of 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 experience providing information for and documenting technical processes.

  • 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.

  • Must be committed to adopting and adhering to best practices including compliance with maintenance windows and change control procedures. 

  • Must possess strong analytic abilities and must be meticulous and careful in their work.

  • Must be an independent thinker capable of working proficiently independently as well as within a team.

  • Must be able to respond to system administration, operations, and maintenance problems 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.

careers.leidos.com/CONMD

CSSKEY

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:February 24, 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 $92,300.00 - $166,850.00

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.

Skills Required

  • BS in Computer Science, Information Technology, or related field (or equivalent experience) and at least 4 years relevant experience
  • Active TS/SCI clearance with Polygraph
  • Experience with network equipment (switches, routers), LANs, and cabling
  • Experience with Windows and Linux operating systems
  • Experience with VMware
  • Experience with Data Center design and configuration (rack and stack, power, placement)
  • Experience with system optimization, monitoring, and technical setup/troubleshooting
  • Hands-on customer support/help-desk experience
  • Experience documenting technical processes and providing technical information
  • Ability to respond quickly and provide detailed status reports and follow-ups
  • Commitment to best practices including maintenance windows and change control
  • Ability to work independently and as part of a team; strong analytical skills
  • Willingness/ability to be on-call and respond to off-duty O&M issues
  • Ability to travel up to 10% and report to the Annapolis Junction, MD office at least once per month
  • Experience with security standards, architectures, or network security technologies (e.g., Multiple Domain, PKI, SSP, Vulnerability Assessment)
  • Experience supporting software configuration management and development environments
  • Experience working in an Agile/SAFe development environment

Leidos Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.

  • Healthcare Strength Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
  • Retirement Support Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
  • Wellbeing & Lifestyle Benefits Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.

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The Company
Alexandria, VA
27,104 Employees
Year Founded: 1969

What We Do

We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.

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