Windows Server Administrator

Relha LLC; Washington, Northern (District of Columbia, KY); Hybrid; USD 92,000 - 167,000; Full time

Job summary

Leidos seeks a Senior Windows Server Systems Administrator to support the ESA V program in Washington, DC with remote work options. Some travel may be required to the DC area.

The role focuses on Windows enterprise management, AD, DNS and certificate services, and collaboration with development, product and QA teams. You will work with the Infrastructure Engineering Manager across design, deployment and hardening of scalable, multi-site environments, applying NIST/DISA controls and driving

Qualifications

• Bachelor's degree or equivalent with 8+ years in systems engineering/administration (6+ with MS/MIS).
• Experience with Active Directory, DNS, and Certificate Authorities.
• Proficiency in DevOps tools and PowerShell scripting.
• 4+ years Windows OS support (Tier II & III).
• 3+ years with ADFS/OKTA or other authentication services.
• Experience managing certificates from major CAs.

Responsibilities

• Configure and troubleshoot Windows Server with AD, DNS, and CA.
• Manage Active Directory, DNS, Certificate Authorities and related services.
• Develop scripts to monitor health of AD, DNS, and CA.
• Design, deploy, and support scalable, multi-site infrastructure (physical, virtual, cloud).
• Apply NIST/DISA security controls and patch management.
• Collaborate with engineering teams to influence design and architecture.

Skills

DevOps tools

PowerShell

Active Directory

DNS

ADFS

OKTA

Certificate Management

Windows Server

Azure AD / Entra ID

Education

Bachelor's degree in Computer Science, Systems Engineering, or related field

MS/MIS with relevant experience

Tools

Entrust/Sectigo

Digicert

SSL.com

Azure AD / Entra ID

AWS

Job description

Leidos has an opening for a Senior Windows Server Systems Administrator to support the ESA V program. ESA V is an IT Services program supporting several customers within the Department of Justice. The program provides a range of IT services, including help desk, deskside support, Windows engineering and maintenance, managed print services, ITSM, Account Management Services, Cybersecurity, Cloud technologies and other IT services.

We need you to participate in fostering a DevOps culture and building strong cross functional collaboration with all areas of development, product, and QA in a dynamic and fast paced environment supporting the development of a data pipeline and machine learning services.

Some minimal travel may be required to the Washington, DC area.

The individual selected for this position will be a member of the ESA V engineering team and the primary work location in Washington, DC and the work will be performed remotely. Some travel may be required based on the program needs and requirements. Excellent hands-on knowledge of Windows enterprise management technologies is required for this position.

You will work closely with the Infrastructure Engineering Manager on the following key tasks with the ones in bold the key needs:

Configure and troubleshoot Windows Server operating system in support of Active Directory, DNS and Certificate Authorities.

Demonstrate extensive understanding of Active Directory systems and be able to manage and maintain them

Demonstrate extensive understanding of DNS, Certificate Authority, Certificate Management and Authentication Services – ADFS, SAML, SSO, OKTA

Applying STIG and VPR adjustments as required

Manage the certificate environment to ensure certificates are issued on time and installed with no outage

Develop scripts to monitor and check health of Active Directory, DNS and Certificate Authorities.

Design, develop, and support scalable, redundant infrastructure to include physical, virtualized and cloud environments

Install, configure and manage a windows-based certificate authority sever

Install, configure and maintain group management policies including role-based management

Set up administrator and service accounts, maintain system documentation, tune system performance, install system wide software

Apply NIST, DISA security controls, security hardening changes based on best practice

Validate and implement critical system patches, and allocate directory storage space

Improve existing infrastructure to incorporate latest technology best practices and cross application integrations

Day-to-day collaboration with engineering teams and system owners, to influence design, and architect solutions in multi-tiered environments

Manage individual project priorities, deliverables, and deadlines

Education and Experience: Typically requires a Bachelor’s degree from an accredited college in a related discipline, with 8 - 12 years of prior relevant experience; or a Master’s degree with 6 - 10 years of prior relevant experience. Additional years of experience and/or relevant certifications will be considered in lieu of degree.

Required Qualifications:

BS in Computer Science, Systems Engineering, or related technical field or equivalent experience with at least 8+ years in systems engineering or administration (6+ years with a MS/MIS Degree)

Experience orchestrating workflows to execute at predefined times, including workflows that have data dependencies.

Proficiency in DevOps tools; scripting languages including PowerShell

5 years of experience with Directory services (Microsoft Active Directory, Entra ID/Azure AD), Certificate Administration and DNS

4 years’ experience providing Tier II & III Windows support for Windows OS

3 years of Experience with ADFS, OKTA or other Authentication services

Experience managing certificates and certificate authorities like Microsoft, Digicert, Entrust/Sectigo and SSL.com

Ability to work well with people from many different disciplines with varying degrees of technical experience

Ability to work well without constant supervision

Ability to express complex technical concepts effectively, both verbally and in writing

Desired Qualifications:

Experience establishing large computer clusters- Experience in continuous configuration automation (CCA) methods for providing a flexible, programmatic platform for deploying and managing the configuration of infrastructure and application resources.

Experience in cloud-based technologies Entra, AWS. Integrating windows services (AD, ADFS) in a cloud architecture

Networking (TCP/UDP, ICMP, and DNS, etc.), infrastructure services, and security experience

ComTIA Security+

Microsoft Certified Professional

3 years of patching servers, backups, permission management

4 years of experience in an operations role

Government contracting experience, particularly with the DOJ

DOJ - ATF Public Trust Clearance needed to start

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:

September 4, 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.