Infrastructure Engineer I with Security Clearance

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

Support and maintain ClearEdge’s secure IT environment, ensuring systems, networks, and user services remain reliable, available, and compliant with security requirements. You will perform hands‑on systems administration, troubleshoot hardware and software issues, assist employees with technical support, and maintain the infrastructure that keeps daily operations running. This role is ideal for a cleared IT professional with a strong Windows and networking foundation who enjoys solving problems, supporting users, and maintaining a secure technology environment.

You Will Excel In This Role If You:

• Have a solid foundation in Windows systems administration, networking, and IT support
• Enjoy troubleshooting technical issues and helping users resolve hardware, software, and connectivity problems
• Understand the importance of security controls, account management, and secure IT operations
• Are comfortable supporting both infrastructure systems and day‑to‑day end‑user technology needs
• Take initiative, follow established procedures, and maintain accurate technical documentation
• Communicate effectively with users, technical teammates, and leadership
• Can manage multiple support requests and priorities while providing responsive, professional service A Day In The Life Of:

A Day In The Life Of:

• 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 What We Are Expecting From You:

What We Are Expecting From You:

• 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
• Ability to work full‑time onsite Nice To Haves:

Nice To Haves:

• Familiarity with Linux administration and command‑line tools
• Experience with virtualization platforms such as VMware, ESXi, or vSphere
• Experience with firewalls, network monitoring, or network security technologies
• Familiarity with network‑attached storage, iSCSI, and shared file systems
• Experience supporting macOS devices in an enterprise environment
• Familiarity with endpoint protection and anti‑malware platforms
• Experience with telephony systems, printers, and other office technology
• Experience supporting backups, disaster recovery, and infrastructure monitoring
• Additional IT certifications relevant to systems administration, networking, or cybersecurity

$97,101 - $138,597 a year Please note that the salary information provided is intended as a general guideline. Compensation is determined based on the candidate’s experience and qualifications, as well as applicable market conditions and business considerations. ClearEdge is an established small business that values its employees and is committed to providing an environment where individuals can succeed and grow. We believe in developing our people, promoting from within, and fostering long‑term career growth across the organization. Our Core Values—Honesty, Integrity, Loyalty, Fairness, Respect, Responsibility, and Accountability—guide everything we do. These principles shape our culture, inform our decisions, and drive our commitment to excellence in support of our customers and partners.

ClearEdge is an equal opportunity employer.