CACI International

Classified Systems Administrator and ISSO

CACI International$103K — $218K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree or equivalent experience with 7+ years in Systems Engineering and Administration.
  • Active Secret (TS) security clearance required.
  • CompTIA Security+ certification or equivalent required.
  • Extensive experience with Microsoft Windows Server environments, including installation and patch management.
  • Hands-on experience with virtualization technologies: VMware, Hyper-V, and Nutanix.
  • Experience with security tools for vulnerability remediation, particularly Nessus.
  • Strong skills in troubleshooting, analytical thinking, and problem-solving in technical contexts.

Responsibilities

  • Install, configure, and maintain Microsoft Windows Server across classified environments.
  • Manage virtualization platforms ensuring their availability and security.
  • Administer critical enterprise services like Microsoft Exchange and SQL Server.
  • Troubleshoot and resolve hardware and software issues across multiple networks.
  • Monitor system performance and apply patches using vulnerability scanning tools.
  • Manage enterprise storage systems and ensure data accountability.
  • Provide Tier III support and mentor junior team members.

Benefits

  • Comprehensive healthcare and wellness programs.
  • Retirement savings and financial planning options.
  • Family support resources and paid time off benefits.
  • Continuing education and professional development opportunities.
  • Flexible working arrangements that promote work-life balance.
Full Job Description
Job Title: Classified Systems Administrator and ISSO

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

* * *

Responsibilities

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

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

  • Administer enterprise services and applications including Microsoft Exchange, Microsoft SQL Server, Skype for Business, Jira, and Confluence.

  • Troubleshoot, analyze, and resolve hardware, software, networking, and infrastructure issues across multiple classified networks.

  • Monitor system performance, apply operating system patches, and implement security mitigations using vulnerability scanning tools such as Nessus.

  • Manage enterprise storage platforms including Pure Storage, Dell PowerVault, and Synology appliances.

  • Administer privileged access and security solutions including RSA and CyberArk.

  • Process classified user account requests, access modifications, and Active Directory administration in accordance with DoD and NISPOM requirements.

  • Conduct new user security briefings and ensure compliance with classified system Rules of Behavior.

  • Serve as the onsite Data Transfer Agent (DTA), performing, documenting, and auditing authorized classified data transfers while maintaining removable media accountability.

  • Maintain accurate inventory and accountability of classified IT assets, removable media, and peripheral equipment in accordance with DCSA requirements.

  • Prepare and submit Security Impact Analysis (SIA) packages for hardware, software, and configuration changes, coordinating approvals prior to implementation.

  • Provide Tier III technical support, mentor junior technicians, communicate escalation status to leadership, and participate in after-hours maintenance and outage support.

Qualifications:

Required

  • Bachelor's degree (or equivalent experience) with 7+ years of Systems Engineering and Systems Administration experience.

  • Active Secret (TS) security clearance.

  • CompTIA Security+ (or equivalent DoD-approved certification).

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

  • Hands-on experience managing VMware, Hyper-V, and Nutanix virtualization environments.

  • Experience implementing vulnerability remediation and security mitigations using enterprise security tools (e.g., Nessus).

  • Strong knowledge of Microsoft Active Directory, DNS, DHCP, and Group Policy administration.

  • Excellent troubleshooting, analytical, critical thinking, and problem-solving skills.

  • Strong written and verbal communication skills with the ability to work independently and within cross-functional technical teams.

  • Demonstrated commitment to continuous learning and supporting mission-critical classified environments.

Desired

  • Experience administering Microsoft SQL Server.

  • Experience supporting Skype for Business and Microsoft MECM/SCCM environments.

  • Experience managing McAfee/Trellix endpoint security solutions.

  • Experience with enterprise backup solutions such as Nakivo and Commvault.

  • Experience supporting classified Information Assurance processes, Security Impact Analyses (SIAs), DCSA compliance, and secure data transfer operations.

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What You Can Expect:

 A culture of integrity.

An environment of trust.

A focus on continuous growth.


Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$103,800 - $218,100

About CACI International

CACI International Inc is a multinational professional services and information technology company. It provides services to many branches of the federal government including defense, homeland security, intelligence, and healthcare. CACI has approximately 23,000 employees worldwide. The company's mission is to provide enterprise and mission technology services and solutions that best fit the needs of its customers. CACI has been named a Fortune World's Most Admired Company, a Washington Post Top Workplace, and a Forbes Best Employer for Diversity.
Learn more about CACI International
Size
22,000 employees
Market Cap
$7.1 billion
Industry
Net Income
$374.4 million
Founded
1962
5 Year Trend
+7.3%
Revenue
$5.8 billion
NASDAQ

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