Windows Administrator

Job#: 3028204

Job Description:
Windows Administrator

Location: Arlington, Virginia (Remote)

Employment Type: Contract

Role Overview

We are seeking an experienced Windows Administrator to support and maintain Windows-based infrastructure that enables enterprise Identity, Credential, and Access Management (ICAM) services. This role focuses on secure Windows Server operations, Active Directory, automation, and compliance to support authentication, authorization, and identity services across the enterprise. Daily responsibilities include supporting developers and performing code reviews.

Key Responsibilities

• Administer and maintain Windows Server environments (2016/2019/2022).
• Perform system patching, vulnerability remediation, hardening, and lifecycle management.
• Manage Active Directory, Group Policy, and Windows authentication services.
• Support ICAM applications hosted on Windows servers, including federation services, access gateways, and identity connectors.
• Ensure secure operations for identity services such as AD, ADFS, and Azure AD Connect.
• Implement and maintain security baselines and compliance standards (e.g., DISA STIGs, CIS benchmarks).
• Develop and maintain automation using PowerShell and tools such as DSC, SCCM/MECM, or Ansible.
• Troubleshoot Windows OS, Active Directory, and ICAM application issues and participate in on-call support.

Required Qualifications

Experience: 3+ years of experience is required. Strong expertise in Windows Server administration, Active Directory, Group Policy, and Windows security. Experience supporting identity-related technologies (ADFS, LDAP, Kerberos, SAML, OAuth, PKI, certificate management) is necessary.

Technical Skills: Familiarity with enterprise security and IAM concepts (authentication, SSO, MFA, RBAC, identity lifecycle). Proficiency with PowerShell scripting is required. Experience with monitoring and logging tools (e.g., Event Viewer, Splunk, Sentinel) is also needed.

Clearance: Candidates must be able to obtain and/or maintain a Department of Defense (DoD) Secret Security Clearance as a condition or continuation of employment.

Certifications: CompTIA Security+ or IAT Level II equivalent certification is required.

Compensation & Benefits

The pay rate for this position is between $65.00 and $75.00 per hour. Please note that the posted pay rate is a good faith estimate. The final pay rate will be determined based on the candidate's experience, qualifications, and geographic location.

This employer is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Apex uses a virtual recruiter as part of the application process. Click for more details.

If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.