Systems Administrator

American College of Radiology

. Deploy, configure, administer, and troubleshoot Windows and Linux servers across physical, virtual, and cloud environments .

Posted 9/25/2026full-timeRemote • Virginia • United StatesMid-LevelSenior💰 $82,550 - $110,050 per yearWebsite

Tech Stack

Tools & technologies

AWSAzureCloudDNSEC2LinuxTCP/IP

About the role

Key responsibilities & impact

Deploy, configure, administer, and troubleshoot Windows and Linux servers across physical, virtual, and cloud environments
Monitor infrastructure health, capacity, availability, and performance; respond to alerts and proactively resolve issues
Administer and support AWS and hybrid-cloud infrastructure, including compute, storage, networking, security groups, IAM, and resource monitoring
Manage Microsoft 365, Active Directory, and Entra ID services, including users, groups, licensing, Group Policy, permissions, authentication, and access controls
Maintain DNS, DHCP, TCP/IP, LAN/WAN connectivity, certificates, and related configuration standards
Install, configure, patch, upgrade, and troubleshoot operating systems, infrastructure tools, and business applications
Support backup, restoration, disaster recovery, and business continuity processes
Implement security hardening, vulnerability remediation, privileged-access controls, and configuration improvements
Serve as an escalation point for complex infrastructure incidents; perform root-cause analysis and document corrective actions
Automate administration, monitoring, reporting, and deployment tasks using scripting and configuration-management tools
Maintain infrastructure inventories, configurations, support records, diagrams, standard operating procedures, and disaster recovery documentation
Manage infrastructure asset and service lifecycles, including capacity planning, renewals, upgrades, vendor coordination, and retirement of obsolete systems
Partner with application, security, network, service desk, and business teams on technology solutions and production changes
Participate in scheduled monthly maintenance windows and rotating weekend on-call coverage
Research and recommend improvements to reliability, security, scalability, automation, and operational efficiency
Perform other duties as assigned

Requirements

What you’ll need

Bachelor’s degree in computer science, Information Technology, or a related field, or equivalent combination of education and hands-on experience
5+ years of experience administering Windows and Linux server environments
Experience supporting cloud or hybrid-cloud environments
Experience administering Microsoft 365 and Active Directory environments
Working knowledge of AWS services, including EC2, S3, IAM, and networking fundamentals
Strong understanding of TCP/IP networking, DNS, DHCP, and LAN/WAN concepts
Experience with Entra ID (Azure AD) and identity/access management practices
Experience supporting backup, recovery, and business continuity processes
Strong troubleshooting, analytical, and problem-solving skills
Excellent written and verbal communication skills
Participation in an on-call rotation
Participation in scheduled monthly maintenance activities
Ongoing training, certifications, and professional development
Preferred: Microsoft or AWS certifications
Preferred: Experience with Cisco networking and security technologies
Preferred: Experience supporting hybrid Microsoft 365 and AWS environments
Preferred: Exposure to infrastructure security best practices and vulnerability management

Benefits

Comp & perks

Defined contribution pension plan
403(b)
Generous paid time off package
Insurance plans with leading providers
Flexible spending
Tuition reimbursement
Training opportunities
Professional growth potential
Competitive compensation
Innovative culture