TS/SCI Infrastructure Engineer I

ClearEdge; Maryland; On-site; USD 97,000 - 139,000; Full time

Job summary

ClearEdge, an established IT services provider in Maryland, is seeking an IT Systems Administrator to maintain a secure Windows-based environment. You will administer Windows servers, AD, DNS/DHCP, and provide hands-on IT support to end users while upholding security controls and compliance with NIST/CMMC standards.

The role requires 3+ years in systems administration, an active TS/SCI with a polygraph, and willingness for after-hours work on occasion.

Qualifications

• Bachelor’s degree in Information Systems, Computer Science, Information Technology, or a related technical 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 the certification 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.
• Nice To Haves: familiarity with Linux, virtualization, firewalls, NAS, macOS enterprise support, incident response.

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

IT support

Security controls

Account management

Documentation

Communication

Multi-tasking

Education

Bachelor's degree in IT/CS

Active TS/SCI clearance with polygraph

CompTIA Security+

Tools

Active Directory

Group Policy

DNS

DHCP

VMware / ESXi

Windows Server

Job description

ClearEdge, an established IT services provider in Maryland, is seeking an IT Systems Administrator to maintain a secure Windows-based environment. You will administer Windows servers, AD, DNS/DHCP, and provide hands-on IT support to end users while upholding security controls and compliance with NIST/CMMC standards.

The role requires 3+ years in systems administration, an active TS/SCI with a polygraph, and willingness for after-hours work on occasion.