Senior Systems Administrator: High Availability & Security

CALIBRE Systems Inc; Battle Creek (MI); On-site; USD 90,000 - 130,000; Full time

Job summary

CALIBRE Systems Inc. in Battle Creek, MI is seeking a Senior Systems Administrator to sustain and secure critical IT infrastructure. You will manage servers, AD, DNS, DHCP, and VMware, implement STIGs/RMF, and lead automation with PowerShell and Ansible.

Responsibilities include system maintenance, vulnerability remediation, capacity planning, and coordination with military and civilian stakeholders. This is a full-time, on-site role supporting DoD-related environments.

Qualifications

• Bachelor's degree in computer science or related field and 10+ years in IT.
• Experience configuring MS Windows OS, AD, DNS, DHCP, and VMware.
• DoD clearance or eligibility and strong security compliance background.

Responsibilities

• Install, configure, operate, and maintain servers, storage, and peripherals.
• Administer AD, DNS, DHCP, GPO, and VMware environments.
• Apply STIGs/RMF, manage security controls, patching, and vulnerability remediation.
• Develop SOPs, document network diagrams, and automate tasks with scripts.
• Provide Tier 2/3 support, monitor performance, and report outages.

Skills

Windows administration

Active Directory management

Networking basics

Scripting (PowerShell, Python)

Education

Bachelor's degree in computer science or related field

10 years of specialized IT experience

IT-I Critical Sensitive security clearance or Tier 5 (T5)

Tools

IBM MQ

Windows IIS

VMware

SCOM

PowerShell

Ansible

Job description

CALIBRE Systems Inc. in Battle Creek, MI is seeking a Senior Systems Administrator to sustain and secure critical IT infrastructure. You will manage servers, AD, DNS, DHCP, and VMware, implement STIGs/RMF, and lead automation with PowerShell and Ansible.

Responsibilities include system maintenance, vulnerability remediation, capacity planning, and coordination with military and civilian stakeholders. This is a full-time, on-site role supporting DoD-related environments.