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 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
Escalate and resolve 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, operating procedures, and disaster recovery documentation
Manage infrastructure asset and service lifecycles, including capacity planning, renewals, upgrades, vendor coordination, and retirement
Partner with application, security, network, service desk, and business teams on technology solutions and production changes
Participate in scheduled maintenance windows and rotating on-call support
Research and recommend improvements to reliability, security, scalability, automation, and operational efficiency

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
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 preferred
Participation in an on-call rotation after business hours
Participation in scheduled monthly maintenance activities
Ongoing training, certifications, and professional development

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