Poly

GD Information Technology•Annapolis Junction, MD

7h•Onsite

About The Position

As an Active Directory Systems Administrator supporting CIS, you will sustain and secure enterprise directory services that enable authentication, authorization, and identity management across complex, multinetwork environments. You will maintain Active Directory forests, domains, and Group Policy, ensure directory service availability, and deliver reliable identity driven capabilities that underpin critical mission systems. Your work strengthens security, consistency, and operational readiness across the enterprise.

Requirements

Active Directory Domain Services (AD DS)
Active Directory Federation Services (AD FS)
Domain Controllers
Group Policy
Group Policy Objects (GPO)
8 + years of related experience
Active TS/SCI clearance with a favorable polygraph
Hands-on experience administering AD, Group Policy, DNS, and authentication services in enterprise or multidomain environments
Strong knowledge of AD health monitoring, replication, domain controller management, OU structure design, and secure configuration practices
Experience troubleshooting complex authentication, GPO, DNS, and directory integrated application issues
Familiarity with STIGs, patching workflows, vulnerability remediation, and configuration compliance requirements
Strong documentation, communication, and cross team collaboration skills
US citizenship required
Meet DoD 8140 Information Assurance Workforce certification requirements (e.g. Security+ CE, etc.)

Nice To Haves

Bachelor’s degree in an IT-related field, or 8-12+ years of relevant IT experience in lieu of a degree

Responsibilities

Administer and maintain Active Directory forests, domains, trust relationships, replication services, and enterprise directory components
Manage and troubleshoot identity services, including DNS integrated AD functions, authentication, Kerberos/NTLM, group membership, and object lifecycle management
Create, maintain, and troubleshoot Group Policy Objects (GPOs) to enforce secure, standardized configurations across multiple networks and client baselines
Perform Tier 2/3 directory service support, resolving complex AD, DNS, GPO, and authentication issues across distributed environments
Support AD integrated services including certificate services, federation services, domain controllers, and directory dependent applications
Execute domain controller deployments, configuration updates, schema extensions, and lifecycle upgrades in alignment with operational and security requirements
Monitor AD health, replication status, event logs, and performance to ensure availability and integrity of directory services
Maintain directory service documentation, configuration baselines, and operational procedures
Collaborate with engineering, cybersecurity, and operations teams to support design changes, new identity capabilities, and secure directory implementations
Execute patching and compliance tasks for AD, DNS, and directory integrated systems
Identify and remediate patching gaps, and document corrective actions

Benefits

Comprehensive benefits and wellness packages
401K with company match
Competitive pay
Paid time off
Variety of medical plan options
Health Savings Accounts
Dental plan options
Vision plan
Ability to contribute both pre and post-tax dollars to 401K up to the IRS annual limits
Full flex work weeks where possible
Variety of paid time off plans, including vacation, sick and personal time, holidays
Paid parental, military, bereavement and jury duty leave
Short and long-term disability benefits
Life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance