Open Systems Technologies Corporation is a leader in the government contracting marketplace, providing Enterprise Security and Cloud Computing solutions to support large organizations. Our capabilities include supplying federal government entities and private businesses with software development, scientific and engineering technical assistance, systems integration and enterprise security. Since its founding in 1996, OST has been committed to delivering high-quality, best-in class results that bring added value to our clients, while investing in our employees' futures by providing exciting projects to work on, and robust benefits to include technical training and certifications, relocation assistance and a 401K match with immediate vesting.

The Windows Administrator is responsible for supporting, maintaining, and securing Windows-based infrastructure that underpins identity, authentication, authorization, and access services. This role ensures the reliability, compliance, and performance of systems integrated with ICAM platforms and contributes to the delivery of secure identity solutions across the enterprise.

Key Responsibilities

Windows System Administration Manage, configure, and maintain Windows Server environments (2016/2019/2022).

Perform patching, system hardening, vulnerability remediation, and lifecycle management.

Manage Active Directory-related OS components, Group Policies, and Windows authentication services.

Maintain DNS, DHCP, and other foundational Windows services supporting ICAM solutions.

ICAM Platform Support Support ICAM applications hosted on Windows servers (e.g., federation services, access gateways, identity connectors, agent-based integrations).

Ensure secure operations for identity-related services such as AD, ADFS, Azure AD Connect, or other federation/authentication services used in the program.

Assist with integration of identity services into enterprise applications and infrastructure.

Security & Compliance Implement security controls, baselines, and compliance frameworks (CIS, DISA STIGs, or internal standards).

Manage logs, event monitoring, certificate services, and PKI components backing ICAM capabilities.

Support audit requests and identity-related access reviews.

Automation & Scripting Use PowerShell and automation tools (e.g., DSC, SCCM/MECM, Ansible, or CI/CD pipelines) to streamline administration and deployments.

Create scripts for repetitive tasks, reporting, and configuration management.

Incident & Problem Management Troubleshoot Windows OS, AD, and ICAM application issues.

Participate in on-call support for identity platform escalations or critical incidents.

Conduct root cause analysis and implement long-term solutions.

Collaboration Engage with ICAM architects, identity engineers, security teams, and application owners.

Support project deployments, environment builds, migrations, and modernization efforts.

Document system configurations, standards, and operational procedures.

Qualifications

• US Citizen (No dual citizens)
• Active Secret Clearance Required
• Possession of Security+ or equivalent
• 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).
• Familiarity with enterprise security and IAM concepts (authentication, SSO, MFA, RBAC, identity lifecycle).
• PowerShell scripting proficiency.
• Experience with monitoring tools and log platforms (Event Viewer, Splunk, Sentinel, etc.).

Benefits

OST is an Equal Opportunity Employer and has been operating since 1996 providing support on various contracts with Government agencies. We offer a comprehensive benefits package that includes 3 weeks paid time off, 11 Federal Holidays, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end-of-year profit sharing.