Senior System Administrator

CACI; United States; On-site; USD 104,000 - 218,000; Full time

Job summary

Senior System Administrator at CACI will support a mission‑critical ICAM environment across development and production systems. You will build and deploy containers in Kubernetes, collaborate with multiple teams, and help maintain high availability while following security and patching procedures.

You will leverage Docker, AWS, LDAP/AD, and VMware in a structured, policy‑driven environment and contribute to documentation and service readiness.

Qualifications

• Active TS/SCI Clearance with Polygraph.
• 7+ years of relevant experience.
• Bachelor’s degree in a technical discipline or 4 additional years of experience in lieu of degree.
• DoD 8570 IAT Level I or higher (if determined applicable).

Responsibilities

• Build, configure, and deploy Docker containers within Kubernetes clusters.
• Collaborate with multiple development teams to integrate web applications, services, databases, and directory technologies.
• Support high‑availability enterprise services and ensure systems remain fully operational.
• Monitor system performance, proactively identify issues, and perform root‑cause troubleshooting.
• Maintain secure, compliant environments through patching, updates, and configuration management.
• Contribute to documentation, operational procedures, and service readiness.

Skills

Docker

Kubernetes

Linux administration

Scripting (Python, Bash)

Documentation

Communication

Time management

Education

Bachelor's degree in a technical discipline

4+ years of equivalent experience in lieu of degree

Tools

Harbor

LDAP

Active Directory

JBoss

AWS

Ansible

Terraform

CloudFormation

VMware vCenter

Python

Bash

IAVA patching

Jira

Confluence

GitLab

Job description

Job Title: Senior System Administrator

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: None

Type of Travel: None* * *

The Opportunity

Join CACI as a key contributor on the MWIII Bridge program, where mission meets innovation. As a Prime Contractor, CACI delivers next‑generation Identity, Credential, and Access Management (ICAM) capabilities across the Intelligence Community. You’ll be part of a high‑impact team that develops, integrates, and sustains enterprise‑level systems essential to national security.

In this role, you’ll support a mission‑critical ICAM environment spanning development and production systems. You’ll work alongside top technical talent, contribute to high‑availability enterprise services, and help drive secure, modern identity solutions used across the IC.

Responsibilities

As a System Administrator, you will:

• Build, configure, and deploy Docker containers within Kubernetes clusters.
• Collaborate with multiple development teams to integrate web applications, services, databases, and directory technologies.
• Support high‑availability enterprise services and ensure systems remain fully operational.
• Monitor system performance, proactively identify issues, and perform root‑cause troubleshooting.
• Maintain secure, compliant environments through patching, updates, and configuration management.
• Contribute to documentation, operational procedures, and service readiness.

Qualifications

Required:

• An active NSA TS/SCI Clearance with Polygraph.
• 7+ years of relevant experience.
• Bachelor’s degree in a technical discipline (or 4 additional years of experience in lieu of degree).
• DoD 8570 IAT Level I or higher (if determined applicable).

• Strong attention to detail.
• Excellent communication and time‑management skills.
• Ability to provide after‑hours support when needed.
• Capability to obtain privileged system access.

Desired:

• Linux administration (CentOS, RedHat).
• Docker and Kubernetes.
• Harbor container registry.
• Directory services (LDAP, Active Directory).
• JBOSS application server.
• AWS services (VPC, EC2, AWS CLI, S3).
• Automation tools (Ansible, Terraform, CloudFormation).
• VCenter/VMWare virtual machine configuration.
• PKI and certificate lifecycle management (x.509).
• Scripting (Python, Bash, etc.).
• OS/application patching (IAVA, version updates).
• Tools such as Jira, Confluence, GitLab.
• Networking, load balancing, and proxy technologies.
• Databases (Oracle, MongoDB).

What You Can Expect

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high‑performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

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

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.