Sr. Systems Administrator

Insight Global; Longmont (CO); On-site; USD 65,000 - 90,000; Full time

Job summary

Insight Global is seeking a Systems Administrator for a defense technology company in Longmont, CO. The role focuses on Linux and Windows administration, server and virtualization management, and supporting a high-security IT infrastructure.

You will contribute to cybersecurity operations, vulnerability management, and system hardening in a Linux-focused environment, with hands-on exposure to networking and security tasks.

Qualifications

• 2+ years of Linux administration experience (Ubuntu preferred).
• Strong administration experience across both Linux and Windows environments.
• Strong networking knowledge and troubleshooting skills.
• Working knowledge of Palo Alto firewalls.
• Experience supporting servers, infrastructure, and virtualized environments.
• Associate's degree required; Bachelor's degree preferred.
• Ability to work onsite 5 days per week in Longmont, CO.

Responsibilities

• Provide Level 2 support across Linux and Windows systems.
• Manage servers, virtualization, networking, and overall IT infrastructure.
• Contribute heavily to cybersecurity operations.

Skills

Linux administration

Windows administration

Networking

Cybersecurity operations

Vulnerability management

System hardening

Education

Associate's degree

Bachelor's degree preferred

Tools

Palo Alto firewalls

Job description

Seeking a Systems Administrator to support a high-power defense technology company in a primarily Linux-focused infrastructure environment. This role provides Level 2 support across Linux and Windows systems, manages servers, virtualization, networking, and overall IT infrastructure, while also contributing heavily to cybersecurity operations. The ideal candidate has strong Linux administration experience, networking knowledge, and an interest in security, vulnerability management, and system hardening.

Qualifications

• 2+ years of Linux administration experience (Ubuntu preferred)
• Strong administration experience across both Linux and Windows environments
• Strong networking knowledge and troubleshooting skills
• Working knowledge of Palo Alto firewalls
• Experience supporting servers, infrastructure, and virtualized environments
• Associate's degree required; Bachelor's degree preferred
• Ability to work onsite 5 days per week in Longmont, CO

Why this Role

• Opportunity to work for a cutting-edge defense technology company developing advanced laser systems
• Strong blend of systems administration, networking, infrastructure, and cybersecurity responsibilities
• Hands-on exposure to vulnerability management, threat analysis, system hardening, and security operations
• Linux-focused environment with opportunities to deepen expertise in Ubuntu administration
• High-impact role supporting mission-critical engineering and technology environments
• Excellent growth opportunity for Jr. to Mid-Level Systems Administrators looking to expand into cybersecurity and infrastructure engineering roles