IT Infrastructure Engineer I — TS/SCI Clearance

Linuxconfig; Annapolis (MD); On-site; USD 97,000 - 139,000; Full time

Benefits offered by this job

$10k annual training and education

10% 401(k) contribution fully vested

Annual health and technology allowance

Job summary

ClearEdge is seeking an experienced IT Systems Administrator to support and maintain a secure Windows-based environment. You will perform hands-on administration, troubleshoot issues, and assist users while upholding security and compliance requirements. This role fits a cleared IT professional who values reliable operations and documentation.

You will manage AD, DNS, DHCP, and Group Policy, support virtualization and storage, and participate in after-hours work as needed to minimize disruption.

Qualifications

• Bachelor’s degree in Information Systems, Computer Science, Information Technology, or related field.
• Minimum of three years of experience in systems administration, IT infrastructure, desktop support, or IT operations.
• Active TS/SCI clearance with a polygraph.
• CompTIA Security+ certification, or ability to obtain within 90 days of starting.
• Experience administering Windows systems, including Active Directory, Group Policy, user accounts, and file permissions.
• Working knowledge of networking fundamentals, including TCP/IP, DNS, DHCP, routing, switching, and wireless connectivity.
• Experience troubleshooting hardware, software, operating system, and end-user technical issues.
• Familiarity with enterprise security practices, access controls, patching, endpoint protection, and system compliance.
• Strong customer service, communication, organization, and problem-solving skills.
• Ability to document technical issues, follow established procedures, and manage multiple priorities.
• Availability for occasional after-hours support during major system updates, maintenance, and infrastructure changes.
• Availability for occasional after-hours emergency support during unplanned system outages or system issues.
• Ability to work full-time onsite.

Responsibilities

• Administer and maintain Windows servers, workstations, user accounts, Active Directory, Group Policy, DNS, and DHCP.
• Provide help desk and desktop support for hardware, software, account access, printing, and connectivity issues.
• Troubleshoot network and infrastructure issues involving switches, firewalls, and enterprise connectivity.
• Install, configure, update, and maintain computer equipment, operating systems, applications, and peripherals.
• Support virtualization platforms, shared drives, file permissions, storage systems, and other corporate IT services.
• Maintain security controls, access permissions, endpoint protection, system updates, and backups in accordance with company policies.
• Monitor system availability and performance, investigate technical issues, and coordinate escalations when needed.
• Maintain accurate records of support requests, system configurations, IT assets, and technical procedures.
• Assist with infrastructure upgrades, equipment deployments, onboarding, offboarding, and other IT operational tasks.
• Follow applicable security policies and compliance requirements, including relevant NIST and CMMC standards.
• Support occasional after-hours maintenance, upgrades, and major system updates to minimize disruption to business operations.

Skills

Windows systems administration

Networking fundamentals

Troubleshooting

Security practices

Documentation

Customer service

Communication

Problem-solving

Education

Bachelor’s degree in Information Systems, Computer Science, Information Technology, or related field

Tools

Active Directory

Group Policy

DNS

DHCP

Job description

ClearEdge is seeking an experienced IT Systems Administrator to support and maintain a secure Windows-based environment. You will perform hands-on administration, troubleshoot issues, and assist users while upholding security and compliance requirements. This role fits a cleared IT professional who values reliable operations and documentation.

You will manage AD, DNS, DHCP, and Group Policy, support virtualization and storage, and participate in after-hours work as needed to minimize disruption.