Hybrid Infra Administrator: Cloud, AD & Security

Red River; Denver (CO); On-site; USD 90,000 - 120,000; Full time

Job summary

Red River is seeking a Systems Administrator to administer and improve a hybrid infrastructure environment, spanning Windows Server, AD, Entra ID, M365, Nutanix, Azure, and AWS. The role supports backup, DR, endpoint management, and security, working with engineers, security, and service desk teams to ensure availability and compliance.

The position requires 5+ years in enterprise infrastructure, strong scripting and documentation abilities, and a collaborative, ITIL-inspired mindset.

Qualifications

• Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent work experience.
• Five or more years of experience administering enterprise infrastructure environments.
• Experience supporting Windows Server, Active Directory, Group Policy, Microsoft Entra ID, and Microsoft 365 services.
• Experience supporting virtualization platforms, preferably Nutanix, and cloud environments such as Azure and/or AWS.
• Experience with backup, disaster recovery, endpoint management, and business continuity processes.
• Working knowledge of networking fundamentals including DNS, DHCP, TCP/IP, VPN, VLANs, routing, and firewalls.
• Strong troubleshooting, documentation, communication, prioritization, and problem-solving skills.

Responsibilities

• Administer and maintain Windows Server, Active Directory, Microsoft Entra ID, Microsoft 365, Nutanix, Azure, AWS, and related hybrid infrastructure platforms.
• Monitor system health, availability, utilization, and performance; participate in capacity planning and improve reliability and efficiency.
• Support backup, replication, disaster recovery, and business continuity activities including validation and testing.
• Implement and maintain infrastructure security controls, system hardening standards, vulnerability remediation, and compliance/audit support.
• Support endpoint and identity management technologies including Intune, Group Policy, access controls, and related security platforms.
• Serve as a Tier II/III escalation resource for complex infrastructure, cloud, identity, and endpoint issues.
• Develop, maintain, and improve technical standards, procedures, and knowledge base articles.
• Assist with infrastructure automation, scripting, workflow improvement, and evaluating new technologies.
• Collaborate with engineering, security, service desk, and business teams on infrastructure initiatives and incident response.
• Participate in IT service management processes including incident response, change requests, problem investigation, and post-implementation reviews.
• Participate in scheduled maintenance windows, after-hours support, and on-call rotations as required.

Skills

System administration

Infrastructure operations

Troubleshooting

Documentation

Education

Bachelor's degree in IT or related field

Tools

Windows Server

Active Directory

Microsoft Entra ID

Microsoft 365

Nutanix

Azure

AWS

Intune

Group Policy

PowerShell

Job description

Red River is seeking a Systems Administrator to administer and improve a hybrid infrastructure environment, spanning Windows Server, AD, Entra ID, M365, Nutanix, Azure, and AWS. The role supports backup, DR, endpoint management, and security, working with engineers, security, and service desk teams to ensure availability and compliance.

The position requires 5+ years in enterprise infrastructure, strong scripting and documentation abilities, and a collaborative, ITIL-inspired mindset.