Sr. Windows Systems Administrator TS/SCI Poly

Leidos; Maryland; On-site; USD 116,000 - 210,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible Schedules

Education and Training Support

Parental Paid Leave

Job summary

Leidos is seeking a Senior Windows System Administrator to join a SAFe-aligned Agile team supporting a complex program. You will perform daily systems administration across multiple systems with a broad geographic footprint, deploying new capabilities and sustaining operations in a fast-paced environment.

The role requires TS/SCI with Polygraph, extensive Windows expertise, and a strong focus on security, patching, and IAM.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related technical field with 12 years of prior relevant experience.
• At least 7 years of Windows administration experience.
• At least 7 years of information security management experience (governance, risk, compliance, operational security).
• At least 5 years implementing and managing Windows AD and DNS environments, GPOs, SCCM, Exchange administration.
• Strong PowerShell and Windows command line experience.

Responsibilities

• Maintain multiple virtual server clusters and address patching and AD configuration issues.
• Use enterprise monitoring tools to detect, assess, and respond to alerts.
• Collaborate with partner workgroups and support cross-team efforts.
• Manage IAVAs and system security scans per SSPs, remediating vulnerabilities promptly.
• Initiate IAVA responses and deploy patches across sites with regular security scans.
• Identify and resolve hardware and software problems; provide timely user support.
• Document operations clearly and publish status updates as needed.
• Plan IT enhancements and support project-related work; provide on-call support if required.

Skills

Active Directory

DNS

GPOs

SCCM

Exchange

PowerShell

IAVA management

VMware

Ansible

Security governance

Education

Bachelor's degree in Computer Science/Information Technology

Tools

VMware

SCCM

Exchange Management Shell

PowerShell scripting

Job description

Senior Windows System Administrator

requires TS/SCI Polygraph up front.

Job Summary

Leidos is seeking a Senior Windows System Administrator to join a high-performing Agile team operating within the Scaled Agile Framework (SAFe) in support of a complex, fast-paced program. In this role, the selected candidate will provide daily systems administration and operations and maintenance support across multiple systems with a broad geographic footprint. Key responsibilities include responding to system engineering requests that support operational requirements, as well as engineering, deploying, and sustaining new capabilities within the environment.

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!

Primary Responsibilities

• Maintaining multiple virtual server clusters and addressing system scan findings, vulnerability management patching, and Active Directory configuration issues.
• Using enterprise monitoring tools to detect, assess, and respond to alerts.
• Providing technical support to partner workgroups on overlapping efforts while maintaining strong interdepartmental collaboration.
• Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
• Initiating IAVA responses and system security scans, completing remediation actions, deploying patches and security updates to designated sites, and executing monthly security scans.
• Identifying and resolving hardware and software problems.
• Proactively notifying customers when test infrastructure delays may affect their ability to complete business functions on time and communicating system outages and publishing status updates to users, as needed.
• Authoring and maintaining clear, accurate, and concise documentation.
• Responding to calls and emails in a timely and professional manner.
• Planning and implementing IT enhancements and supporting project-related work.
• Responding to system administration, operations, and maintenance issues on an on-call basis when required.

Basic Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related technical field and 12 years of prior relevant experience. Additional experience may be substituted for a degree.
• Must have at least 7 years of Windows administration experience.
• Must have at least 7 years of experience in information security management, with demonstrated expertise in security governance, risk management, compliance, and operational security functions.
• Must have at least 5 years of experience with each of the following:
• Implementing and managing Windows Active Directory and DNS environments
• Creating and managing Group Policy Objects (GPOs)
• Microsoft SCCM
• Microsoft Exchange administration and Exchange Management Shell
• Must have experience with Windows Command Line, PowerShell, and PowerShell scripting.
• Strong understanding of advanced security protocols, standards, and information security principles is a must.
• Experience with software and security architectures.
• Hands-on experience with IAVA management.
• Hands-on experience supporting users, optimizing system operations, and monitoring enterprise IT systems.
• Commitment to best practices, including compliance with maintenance windows and change control procedures.
• Familiarity with Windows and Linux operating systems, VMware, and networking technologies including switches, routers, LANs, and cabling.
• Must have strong analytical skills, attention to detail, and the ability to work effectively both independently and as part of a team.
• Clearance Required: Must have TS/SCI with Polygraph.

Preferred Qualifications

• Experience documenting and supporting security accreditation and certification activities.
• Experience with network security technologies, including multi-domain solutions, PKI, SSPs, and vulnerability assessments.
• Experience with data center design and configuration, including rack-and-stack, power planning, and equipment placement.
• Experience with VMware.
• Experience using automation tools such as Ansible or SaltStack.
• Experience serving in a System Administrator role supporting software configuration management and development environments.

Pay Range

Pay Range $116,350.00 - $210,325.00

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.