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# Senior System Administrator

- **Company:** Caci Inc
- **Location:** Elkridge, MD, United States
- **Experience:** Expert
- **Salary:** $103,800.0 - $218,100.0
- **Contract:** Permanent contract
- **Skills:** Active Directory, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Confluence, JIRA, Bash Shell, CentOS, Configuration Management, Databases, Monitoring of Systems, WildFly (JBoss AS), Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, MongoDB, Oracle (Applications), Public Key Infrastructure, X.509, Red Hat Enterprise Linux, Aws Command Line Interface (CLI), Ansible, VMware Virtualization, Web Applications, Scripting, Load Balancing, Amazon Virtual Private Cloud (VPC), Gitlab, Cloudformation, Vcenter, Terraform, Docker
- **Published:** July 9, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9019613/senior-system-administrator

## About the Role

* 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).

## Description

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.


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