WINDOWS ADMINISTRATOR (SECRET CLEARANCE REQUIRED)
Location: Fort Belvoir, VA
Work model:Preferred onsite in Fort Belvoir, VA (for mission support), but open to hybrid or fully remote for the right candidate.
Employment Type: Direct Hire
Compensation: $165-175,000/year

OVERVIEW
We’re hiring a Windows Administrator to support and secure a Windows-based infrastructure that underpins enterprise Identity & Access Management (ICAM) services—authentication, authorization, and access. This role focuses on system reliability, security hardening, automation, and operational support for identity-related platforms.

WHAT YOU’LL DO -

• Manage, configure, and maintain Windows Server environments (2016/2019/2022)
• Perform patching, system hardening, vulnerability remediation, and lifecycle management - Administer Active Directory, Group Policy, and Windows authentication services
• Maintain core services such as DNS and DHCP that support ICAM solutions
• Support identity-related technologies (e.g., federation services, access gateways, identity connectors)
• Support secure operations for services such as AD, ADFS, Azure AD Connect, and related auth/federation tooling
• Implement security controls and compliance baselines (CIS, DISA STIGs, or internal standards)
• Manage logging/monitoring and event analysis (Event Viewer, Splunk, Sentinel, etc.)
• Build automation/scripts in PowerShell (and tools like DSC, SCCM/MECM, Ansible, CI/CD where applicable)
• Troubleshoot incidents, participate in on-call support as needed, and drive root-cause resolution - Partner with identity engineers, security teams, and application owners; document standards and procedures

REQUIRED QUALIFICATIONS

• Active Secret clearance
• Strong Windows Server administration experience (2016/2019/2022)
• Hands-on expertise with Active Directory, Group Policy, and Windows security
• Experience with identity-related technologies (ADFS, LDAP, Kerberos, SAML, OAuth, PKI/certificates) -
• PowerShell scripting proficiency -
• Experience with monitoring/log platforms (e.g., Event Viewer, Splunk, Sentinel) - Security+ (or equivalent)

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #851-Rockville-S1