DoD IT Systems Administrator - Hybrid/On-Site

Sierra Management and Technologies, Inc.; California (MD); Hybrid; USD 85,000 - 120,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) retirement plan with matching

Job summary

Sierra Management and Technologies, Inc. is seeking an IT Systems Administrator to support daily operations in a hybrid IT environment for DoD-focused projects. You will work with a senior admin to maintain infrastructure, security, and end-user support, with on-site work in Southern Maryland and one day per week for telework.

The role requires strong technical skills, independence, and the ability to escalate complex issues as needed. Candidates must be authorized to work in the U.S.

Qualifications

• 3+ years of IT systems administration or similar role.
• Hands-on experience with Active Directory and basic Azure AD administration.
• Experience with Microsoft 365 (Exchange, Teams, SharePoint).
• Windows endpoint management and patching; basic networking concepts (VPNs, firewalls).
• Familiarity with security best practices and compliance environments.

Responsibilities

• Manage Active Directory and Azure AD user accounts, access provisioning, group policies, and SSO/conditional access support.
• Support 80+ systems and 100+ users with patching, vulnerability remediation, endpoint monitoring, hardware deployments, and remote/VPN connectivity.
• Administer Exchange Online, SharePoint, Teams, and OneDrive; handle licensing and service health monitoring; assist GCC High migration.
• Assist with firewall and network device management; monitor logs; support email filtering and endpoint security tools.
• Help maintain CMMC Level 2, NIST SP 800-171, and DFARS documentation including inventories, diagrams, and audit artifacts.
• Resolve user tickets, troubleshoot hardware/software/access issues, and support onboarding/offboarding.

Skills

Active Directory

Azure AD administration

Microsoft 365

Windows endpoint management

Networking basics

Security/compliance зн

Tools

Active Directory

Azure AD

Microsoft 365

Patching/endpoint management

Job description

Sierra Management and Technologies, Inc. is seeking an IT Systems Administrator to support daily operations in a hybrid IT environment for DoD-focused projects. You will work with a senior admin to maintain infrastructure, security, and end-user support, with on-site work in Southern Maryland and one day per week for telework.

The role requires strong technical skills, independence, and the ability to escalate complex issues as needed. Candidates must be authorized to work in the U.S.