Server Administrator III

Agile Defense · Redstone Arsenal, AL

  • Senior
  • Full-time
  • Posted 2026-11-04
  • Confirmed live on 10 November 2026

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Job description

About Agile Defense
 
At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.
 
Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.

Job Description
The Office of the Chief Information Officer (OCIO) provides Information Technology (IT) support to PAE FIRES which is a Continental United States (CONUS) organization. The OCIO provides centralized life cycle management, direction, guidance, and support for the acquisition, sustainment, maintainability, supportability, and implementation of the PAE, Information Mission Area (IMA). PAE FIRES is an approved Data Center providing hosting to multiple organizations throughout the US Army Acquisition community.

We are seeking an experienced Senior Systems Administrator to design, deploy, administer, secure, and maintain enterprise infrastructure and mission-critical applications across hybrid Windows, Linux, virtualization, and containerized environments.

The ideal candidate will possess advanced technical expertise in Red Hat OpenShift, Kubernetes, GitOps automation, VMware Cloud Foundation (VCF), enterprise application deployment, authentication technologies, and infrastructure lifecycle management.

This position requires a highly technical, hands-on engineer capable of independently troubleshooting complex infrastructure and application issues, implementing enterprise solutions, and collaborating with cybersecurity, networking, development, and server teams.

Primary Focus: Enterprise Applications, OpenShift, Kubernetes, GitOps, VMware, and Infrastructure Engineering

JOB DUTIES AND RESPONSIBILITIES

OpenShift, Kubernetes, and GitOps

· Design, deploy, administer, and troubleshoot Red Hat OpenShift and Kubernetes environments.

· Implement and maintain GitOps workflows using Argo CD, Git repositories, and declarative configuration management.

· Deploy, configure, upgrade, and troubleshoot OpenShift Operators, including Operator Lifecycle Manager (OLM) and OperatorHub integrations.

· Manage containerized applications, deployments, StatefulSets, services, routes, ingress, ConfigMaps, Secrets, and persistent storage.

· Implement and maintain Helm charts, Kustomize configurations, and Kubernetes manifests.

· Troubleshoot container networking, DNS, certificates, storage, resource utilization, and application availability.

· Manage cluster upgrades, Operator compatibility, and application lifecycle processes.

· Implement role-based access control (RBAC), security contexts, and enterprise authentication integrations.

VMware and Enterprise Virtualization

· Administer and maintain VMware vSphere, ESXi, vCenter Server, and VMware Cloud Foundation (VCF) environments.

· Perform virtual infrastructure provisioning, upgrades, patching, performance optimization, and capacity management.

· Troubleshoot complex virtualization, storage, networking, and high-availability issues.

· Support VMware vSAN, distributed networking, resource allocation, and virtual machine lifecycle management.

· Coordinate infrastructure maintenance, backup, disaster recovery, and service restoration.

· Maintain infrastructure compliance with applicable security baselines and organizational requirements.

Enterprise Application Deployment and Administration

· Design, install, configure, integrate, and maintain enterprise applications hosted on Windows, Linux, virtual machines, and container platforms.

· Administer Microsoft Internet Information Services (IIS), including application pools, HTTPS bindings, certificates, and application authentication.

· Deploy and support enterprise applications such as GitLab, Jira, Confluence, and other commercial or custom software platforms.

· Configure application connectivity, reverse proxies, load balancing, DNS, TLS/SSL, and backend service integrations.

· Troubleshoot application availability, performance, connectivity, dependencies, and compatibility.

· Coordinate application upgrades, vulnerability remediation, vendor support, and release management.

· Support application database connectivity, configuration, backup, and recovery.

Identity, Authentication, and Access Management

· Design, implement, and troubleshoot enterprise authentication and authorization solutions.

· Configure and support SAML 2.0, OpenID Connect (OIDC), OAuth 2.0, LDAP, and Active Directory integrations.

· Integrate enterprise applications with centralized identity providers and single sign-on (SSO) platforms.

· Manage Public Key Infrastructure (PKI), X.509 certificates, certificate chains, and TLS configurations.

· Troubleshoot authentica

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