Systems Engineer​/Administrator Lead

Job Title:

Systems Engineer/Administrator Lead Job Category:
Information Technology Time Type:
Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type:
Regular Percentage of

Travel Required:

Up to 10%
Type of Travel:
Continental US*
*
* The Opportunity:

CACI is seeking a Classified Systems Engineer Administrator to support and maintain mission-critical classified information systems within a secure environment. This position combines systems administration, systems engineering and will be the site lead for Danbury, CT.The ideal candidate will bring hands-on experience administering Microsoft Windows Server infrastructure, virtualization technologies, enterprise applications, storage platforms, identity and access management, and cybersecurity tools. This individual will work across technical and security teams to maintain system performance, address vulnerabilities, support configuration changes, and ensure classified systems operate in accordance with applicable DoD, DCSA, and NISPOM requirements.

Responsibilities:

Install, configure, administer, maintain, and troubleshoot Microsoft Windows Server and Linux operating systems across classified environments.

Manage virtualization platforms, including VMware, Microsoft Hyper-V, and Nutanix, ensuring system availability, performance, scalability, and security.

Administer enterprise services and applications, including Microsoft Exchange and Microsoft SQL Server.

Troubleshoot and resolve complex hardware, software, networking, operating system, application, and infrastructure issues across multiple classified networks.

Manage enterprise storage platforms, including Pure Storage, Dell Power Vault, and Synology appliances.

Administer Microsoft Active Directory, including classified user account provisioning, access modifications, permissions, Group Policy, DNS, and DHCP in accordance with applicable security requirements.

Maintain accurate inventory, configuration, and accountability records for classified IT assets, removable media, hardware, and peripheral equipment in accordance with DCSA requirements.

Prepare and submit Security Impact Analysis (SIA) packages for proposed hardware, software, system, and configuration changes and coordinate required approvals prior to implementation.

Mentor junior technicians and system administrators, share technical knowledge, and support the development of consistent system administration practices.

Collaborate with cybersecurity, engineering, infrastructure, and program teams to identify technical risks and implement secure, sustainable solutions.

Participate in scheduled after-hours maintenance, system upgrades, incident response, and outage support as mission requirements dictate.

Expert in Active Directory, group policies;
Linux (preferably Redhat), Network working experience - Cisco, Datacenter, Firewalls.

Proven experience in leading project, managing large teams, working with the leaders on the high-side.

Qualifications:

Required:

Active TS/SCI Poly.

Bachelor's degree in Information Technology, Computer Science, Systems Engineering, Cybersecurity, or a related discipline, or equivalent combination of education, technical training, certifications, and professional experience.
7+ years of relevant Systems Administration, Systems Engineering , or related enterprise IT experience.

CompTIA Security+ certification or another applicable DoD-approved cybersecurity certification.

Extensive experience administering Microsoft Windows Server environments, including installation, configuration, patch management, system maintenance, troubleshooting, and performance optimization.

Hands-on experience supporting virtualization technologies such as VMware, Hyper-V, and/or Nutanix .Experience identifying and…