Sr. System Engineer - Active Directory Infrastructure

CPI•Plano, TX

1d•Remote

About The Position

CPI is seeking a Senior Systems Engineer – Active Directory & Infrastructure to join our three-person infrastructure team. This remote position is a hands-on senior role and the primary technical owner for Microsoft Active Directory Domain Services (AD DS), Group Policy, hybrid identity, and Windows patching. The successful candidate will have deep experience with enterprise Active Directory and Windows environments and will lead efforts involving AD consolidation, directory and Group Policy cleanup and maintenance, security hardening, lifecycle management, and patching. The role also provides cross-functional backup for virtualization, compute, storage, backup, and other infrastructure platforms. U.S. Citizenship is required. Candidates requiring employment authorization through an EAD, visa, or other non-citizen work authorization are not eligible for consideration.

Requirements

U.S .Citizenship is required. Candidates requiring employment authorization through an EAD, visa, or other non-citizen work authorization are not eligible for consideration.
Advanced knowledge of AD with strong hands-on experience administering and troubleshooting multi-forest/domain/tenant environments
Experience with AD consolidation, migration, cleanup, restructuring, or modernization.
Advanced Windows Server administration and troubleshooting experience.
Strong experience with Windows patch management, vulnerability remediation, and systems lifecycle management leveraging MECM/Configuration Manager and/or Intune.
Strong PowerShell scripting and automation skills.
Hands-on experience with Microsoft Entra ID, hybrid identity, and directory synchronization.
Working knowledge of Kerberos, NTLM, SAML, OAuth/OIDC, AD CS, DNS, DHCP, and networking dependencies.
Ability to troubleshoot across infrastructure layers and work independently in a small, collaborative infrastructure team.
Strong documentation, communication, troubleshooting, and root-cause analysis skills.
Security and Compliance perspective, NIST 800-43, 171, CMMC, CUI, ITAR, ECI

Nice To Haves

Bachelor's degree in Computer Science, Information Technology, or similar.
Experience with Active Directory security hardening, privileged access management, and least-privilege design.
Experience supporting VMware, NetApp, and/or Rubrik environments.
Experience with disaster recovery, business continuity, infrastructure monitoring, and enterprise lifecycle management.
Microsoft certifications related to Windows Server, Azure/Entra Identity, or Security.
Experience supporting regulated, defense, aerospace, or other security-sensitive environments.
Strong Linux administration experience and familiarity with Docker/containerized workloads.
Familiarity with Microsoft Azure Government / GCC High, including identity, security, networking, and compliance considerations.
Experience supporting AI infrastructure, agentic AI platforms, MCP (Model Context Protocol), AI gateways, or enterprise integration of AI workloads with identity and access controls.

Responsibilities

Serve as the primary administrator and technical SME for Microsoft Active Directory Domain Services (AD DS), in a multi-forest, multi-domain, and multi-tenant environment.
Design, implement, maintain, troubleshoot, and optimize Group Policy Objects (GPOs), security/WMI filtering, and policy performance.
Lead Active Directory consolidation, cleanup, restructuring, and modernization, including remediation of stale accounts/objects, legacy configurations, unnecessary policies, excessive privileges, and other directory complexity.
Administer and support Microsoft Entra ID and hybrid identity, including directory synchronization and authentication/authorization across on-premises and cloud environments.
Troubleshoot complex AD, Group Policy, DNS, Kerberos, NTLM, certificates, authentication, authorization, and replication issues.
Own and improve Windows Server and endpoint patching, using MECM/Configuration Manager and Intune including patch planning, deployment, compliance reporting, troubleshooting failed updates, and remediation of vulnerable or unsupported systems.
Provide senior-level backup and troubleshooting support for VMware compute/virtualization, NetApp storage, Rubrik backup and recovery, and related infrastructure.
Work with security and infrastructure teams on AD security hardening, privileged access, least privilege, vulnerability remediation, disaster recovery, and business continuity.