Enterprise Systems Administrator MDX - SSFB/HSV

Amentum•Colorado Springs, CO

7d•Onsite

About The Position

The Enterprise Systems Administrator is part of Amentum’s Missile Defense Division and directly supports the Missile Defense Agency (MDA). The position is based at Schriever Space Force Base in Colorado Springs, Colorado, or Redstone Arsenal in Huntsville, Alabama. Remote or telework is not available, relocation assistance is not offered, and the role requires an active DoW Secret clearance. The position works the day shift and requires travel up to 10% of the time. The administrator maintains Windows Server environments and enterprise infrastructure, performs systems and application maintenance, access management, patching, vulnerability remediation, STIG compliance, and configuration management. The role also supports virtualized, hybrid-cloud, SaaS, and Kubernetes environments; deploys and troubleshoots containerized applications and Windows and Linux container workloads; and contributes to automation and repeatable deployment processes. Responsibilities include daily monitoring, responding to incidents and service requests, documenting technical work, maintaining system documentation and recovery procedures, and coordinating with cybersecurity, network, cloud, application-development, and service-delivery teams. The administrator participates in maintenance windows and provides occasional after-hours support. Resumes must include month and year dates. The selected candidate may be assigned as an employee of a teammate company.

Requirements

At least 1 year of directly related experience.
Experience administering and maintaining Microsoft Windows Server environments, preferably including Windows Server 2022 and/or Windows Server 2025.
Experience implementing defined cybersecurity controls, vulnerability remediation, system hardening, and STIG compliance activities.
Familiarity with Kubernetes concepts, including deployments, services, namespaces, role-based access control, configuration management, monitoring, and troubleshooting.
Familiarity with cloud-hosted or SaaS application support, including service monitoring, tenant administration, access management, and incident coordination.
Strong troubleshooting, technical documentation, customer-support, communication, and teamwork skills.
Ability to adapt to changing priorities and learn emerging technologies.
Experience supporting Microsoft Azure, Amazon Web Services (AWS), or hybrid-cloud environments.
Experience with scripting and automation, preferably PowerShell; familiarity with Python, Bash, Ansible, Terraform, or equivalent tools.
Experience establishing, maintaining, and following documented technical processes and procedures.
An approved DoD 8570/8140-aligned Level II certification, such as CompTIA Security+ CE or higher, as required by the contract.
Active DoW Secret Security Clearance.

Nice To Haves

One or more relevant technical certifications in Microsoft Windows Server, Azure, AWS, Kubernetes, containers, virtualization, or automation.
Experience with BMC Helix/Remedy or comparable IT service-management tools.
Experience administering or supporting Kubernetes platforms, such as Azure Kubernetes Service, Red Hat OpenShift, Rancher, or comparable enterprise Kubernetes distributions.
Experience supporting Windows and/or Linux containers in enterprise environments.
Experience supporting Infrastructure as Code, configuration management, automated deployments, continuous integration/continuous delivery pipelines, source control, or artifact repositories.
Experience administering or supporting Microsoft 365, Microsoft Entra ID, or comparable enterprise SaaS platforms.

Responsibilities

Administer, maintain, and troubleshoot Windows Server environments, including Windows Server 2022 and Windows Server 2025, supporting enterprise applications and infrastructure services.
Perform operating system and application maintenance, account and access management, patching, vulnerability remediation, STIG compliance, configuration management, and general systems administration.
Support virtualized, hybrid-cloud, and SaaS environments, including tenant administration, identity and access management, service configuration, monitoring, incident response, and vendor coordination as applicable.
Deploy, configure, maintain, and troubleshoot containerized applications using approved container technologies and registries.
Support Kubernetes platforms and workloads, including application deployments, namespaces, role-based access control, configuration and secret management, monitoring, troubleshooting, and patching.
Support Windows and Linux container workloads in accordance with approved security, operational, and availability requirements.
Assist with automation and repeatable deployment processes using PowerShell, Desired State Configuration, Ansible, Terraform, or equivalent approved tools.
Perform daily monitoring to verify system, application, container, and infrastructure availability, integrity, performance, and security posture.
Respond to incidents, service requests, and user-support requirements across multiple platforms; document troubleshooting, corrective actions, and lessons learned.
Maintain technical documentation, standard operating procedures, configuration baselines, system diagrams, and recovery procedures.
Coordinate with cybersecurity, network, cloud, application-development, and service-delivery teams to resolve technical issues and support mission requirements.
Participate in maintenance windows and provide occasional after-hours support.
Perform other duties in support of the Service Delivery Team.