Senior Systems Administrator: Cloud, Security & Automation Lead

Red Cat Holdings; Valdosta (GA); On-site; USD 85,000 - 120,000; Full time

Job summary

Red Cat Holdings seeks a Senior Systems Administrator to own the reliability, security, and performance of critical IT infrastructure across MS 365, cloud, on-prem, and endpoints. The role focuses on hands-on operations, problem solving, and mentoring the IT team in a secure, compliant environment.

You will drive initiatives in Microsoft GCC High and Commercial environments, Windows/Linux server administration, cloud services, monitoring, backups, incident response, and documentation to improve

Qualifications

• Must be a US Person, as defined under applicable U.S. export-control regulations.
• 7+ years of hands-on systems administration or related IT experience.
• 3+ years in a senior, lead, escalation, or infrastructure-owner capacity.
• Strong experience administering Windows Server, Active Directory, DNS, DHCP, file services, and enterprise identity services.
• Experience administering Linux servers and supporting mixed OS environments (Windows, macOS, Linux).
• Experience supporting Microsoft 365 administration, including Entra ID/Azure AD, conditional access, and security features.
• Experience with Azure and AWS cloud environments.
• Experience with IT service management and documentation tools (Jira, Jira Service Management, Confluence).

Responsibilities

• Administer, maintain, and optimize Windows, Linux, and macOS systems across endpoint, server, and cloud environments.
• Manage on-premises and cloud-based servers, including provisioning, configuration, patching, monitoring, backup validation, lifecycle, and decommissioning.
• Support Microsoft 365 environments (GCC High and Commercial tenants) for availability, identity, access, and productivity.
• Administer core infrastructure services: Active Directory, Entra ID/Azure AD, DNS, DHCP, Group Policy, file services, certificates.
• Support Azure and AWS infrastructure, including VMs, storage, networking, access controls, monitoring, and cost-conscious operations.
• Maintain and improve system monitoring, alerting, logging, capacity planning, and performance management.

Skills

Communication skills

Independence

Problem solving

Leadership experience

Tools

Jira

Jira Service Management

Confluence

Smartsheet

Job description

Red Cat Holdings seeks a Senior Systems Administrator to own the reliability, security, and performance of critical IT infrastructure across MS 365, cloud, on-prem, and endpoints. The role focuses on hands-on operations, problem solving, and mentoring the IT team in a secure, compliant environment.

You will drive initiatives in Microsoft GCC High and Commercial environments, Windows/Linux server administration, cloud services, monitoring, backups, incident response, and documentation to improve