Systems Administrator

Red River; Dover (DE); Hybrid; USD 80,000 - 120,000; Full time

Job summary

Red River is seeking a Systems Administrator to serve as a technical resource for enterprise infrastructure, ensuring availability, security, and performance of Windows Server, AD, Entra ID, Microsoft 365, Nutanix, and cloud platforms. You will work with engineers, security, service desk and business stakeholders in incident management and ITIL-aligned processes.

Responsibilities include capacity planning, backup and disaster recovery, system hardening, and automation efforts, plus on-call

Qualifications

• Bachelor's degree or equivalent work experience.
• Five+ years experience administering enterprise infrastructure.
• Experience with Windows Server, AD, Group Policy, Entra ID, and Microsoft 365.
• Experience with Nutanix virtualization and Azure/AWS.
• Experience with backup, disaster recovery, endpoint management, and business continuity processes.
• Networking fundamentals: DNS, DHCP, TCP/IP, VPNs, VLANs, 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 security controls, system hardening standards, vulnerability remediation, and compliance support.
• Support endpoint and identity management technologies (Intune, Group Policy, access controls).
• Serve as a Tier II/III escalation resource for complex infrastructure, cloud, and security issues.
• Develop, maintain, and improve technical standards, procedures, and knowledge base.
• Assist with automation, scripting, and evaluation of new technologies.
• Collaborate with engineering, security, service desk, and business teams on initiatives and incident response.
• Participate in IT service management processes and on-call rotations.

Skills

Troubleshooting

Documentation

Communication

Prioritization

Problem-solving

Education

Bachelor's degree or equivalent in IT/CS

Tools

Windows Server

Active Directory

Group Policy

Microsoft Entra ID

Microsoft 365

Nutanix

Azure

AWS

PowerShell

SQL Server

ITIL

Job description

Pay or shift range: $80,000 USD to $120,000 USD

This is a general range for the position. Final offers are based on various factors, including skill set, experience, location, qualifications and other job-related reasons.

Description

The Systems Administrator serves as a technical resource for infrastructure operations, participates in system implementation and improvement efforts, maintains operational procedures, and acts as an escalation point for complex technical issues. This position works closely with other engineers, security personnel, service desk staff, and business stakeholders to ensure the availability, security, performance, and compliance of enterprise systems. This role is expected to work within established IT service management practices, including incident management, change management, problem management, request fulfillment, and related operational processes.

Primary 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 proactively identify opportunities to improve reliability and operational efficiency.

• Support backup, replication, disaster recovery, and business continuity activities, including backup validation and recovery testing.

• Implement and maintain infrastructure security controls, system hardening standards, vulnerability remediation activities, and compliance/audit support processes.

• Support endpoint and identity management technologies, including Microsoft Intune, Group Policy, access controls, endpoint compliance, and related security platforms.

• Serve as a Tier II/III escalation resource for complex infrastructure, cloud, Microsoft 365, identity, and endpoint-related issues.

• Develop, maintain, and improve technical standards, operational procedures, administrative documentation, and knowledge base articles.

• Assist with infrastructure automation, scripting, workflow improvement, and evaluation of new technologies that improve consistency, security, and efficiency.

• Collaborate with engineering, security, service desk, and business teams on infrastructure initiatives, incident response, maintenance activities, and operational improvements.

• Participate in IT service management processes, including incident response, change requests, problem investigation, service requests, maintenance coordination, and post-implementation reviews.

• Participate in scheduled maintenance windows, after-hours support, and on-call rotations as required.

Required 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 technologies, VLANs, routing, and firewalls.

• Strong troubleshooting, documentation, communication, prioritization, and problem-solving skills.

Preferred Qualifications

• Working knowledge of SQL Server administration, maintenance, and troubleshooting.

• Nutanix, Microsoft, AWS, or other relevant infrastructure/cloud certifications.

• Experience supporting security and compliance frameworks such as NIST 800-171, CMMC, SOC 2, or ISO 27001.

• Experience with PowerShell scripting, infrastructure automation, monitoring, logging, vulnerability management, or endpoint security tools.

• Experience in hybrid environments combining on-premises infrastructure, cloud services, and Microsoft 365 administration.

• Experience working within ITIL-aligned service management processes; ITIL Foundation certification preferred.

Physical and Work Requirements

• Ability to participate in after-hours maintenance and on-call support as required.

• Ability to travel occasionally to company or customer locations. This position may operate remotely, with travel for training or visits to Red River offices or data center locations as business needs require.

• Ability to lift and move equipment consistent with normal infrastructure support activities.

Equal Opportunity Employer

This employer is required to notify all applicants of their rights pursuant to federal employment laws.

For further information, please review the Know Your Rights (https://www.eeoc.gov/poster) notice from the Department of Labor.