> Markdown version of [/jobs/ext/492251-senior-systems-administrator](https://www.wearedevelopers.com/jobs/ext/492251-senior-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Administrator - **Company:** P3S Corporation - **Location:** Wright-Patterson Air Force Base, OH, United States - **Experience:** Expert - **Salary:** $110,000.0 - $130,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Bash Shell, Ubuntu (Operating System), CentOS, Cloud Computing, Configuration Management, Cyber Security, Information Systems, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), VMware ESX Servers, Identity and Access Management, Python (Programming Language), Kernel-Based Virtual Machine, Network Security, Lightweight Directory Access Protocols (LDAP), Linux Kernel, Windows Servers, OpenShift, Performance Tuning, Public Key Infrastructure, Windows PowerShell, Red Hat Enterprise Linux, Ansible, SAP (Applications), Server Virtualization, Systems Architecture, Virtual Machines, Virtualization Technology, VMware VSphere, Backup and Restore, Diagnostic Tools, Scripting, Enterprise Software Applications, Computer Network Operations, Cloud Platform System, System Availability, Git, SAPBasis, Containerization, Selinux, Kubernetes, Information Technology, Deployment Automation, Nessus, CIS Benchmarks, Terraform, Splunk, Scap Compliance Checker, Devsecops, Docker, Vulnerability Analysis, Vmware - **Published:** June 6, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=a91fa9c433aac82c ## About the Role Do you have experience in Windows support?, Do you have a Bachelor's degree?, Clearance: Active Top Secret Clearance required with eligibility for SCI access. SAP eligibility and prior experience supporting Special Access Programs (SAP) highly desired. Required Certifications: (One or more of the following) CISSP, CAP, CISM, CASP+ / SecurityX, Security+, CySA+, RHCSA, RHCE, Must meet DoD 8570/8140 IAM Level II/III or IAT Level II requirements. Education: Bachelor's degree in information technology, Computer Science, Cybersecurity, Engineering, or related field. Preferred: Master's degree in related discipline., * Active Top Secret clearance with SCI eligibility. * U.S. Citizenship. * Minimum 8-10 years of systems administration experience. * Minimum 3 years supporting SCI and/or SAP environments. * Extensive experience administering Windows and Linux systems. * Experience supporting classified DoD information systems. * Experience implementing RMF and DISA STIG requirements. * Experience with enterprise virtualization technologies. * Experience with automation frameworks and scripting. * Strong troubleshooting and analytical skills. Desired Experience * Air Force or DoD operational environment experience. * SAP administration experience within the past five years. * OpenShift administration. * DevSecOps platform support. * Cloud infrastructure administration. * Acquisition program office support experience. * Experience supporting highly available mission-critical systems. * Experience leading technical teams and mentoring junior personnel., * Bachelor's (Preferred), * supporting SCI and/or SAP environments: 3 years (Preferred) * systems administration experience.: 8 years (Preferred) * administering Windows and Linux systems: 5 years (Preferred) * implementing RMF and DISA STIG requirements: 5 years (Preferred) * supporting classified DoD information systems: 5 years (Preferred) * enterprise virtualization technologies: 5 years (Preferred) * automation frameworks and scripting: 5 years (Preferred) * Cloud infrastructure administration: 5 years (Preferred) * Containerization & Platform Administration: 5 years (Preferred) ## Description The Senior Systems Administrator serves as the lead technical administrator responsible for the design, implementation, operation, security, maintenance, and optimization of classified information systems supporting Department of Defense and Air Force mission requirements. The position provides senior-level expertise across Windows, Linux, virtualization, cloud, containerized, and networked environments while ensuring compliance with DoD cybersecurity, Risk Management Framework (RMF), and Information Assurance requirements. Primary Responsibilities Systems Administration o Design, implement, administer, and maintain Windows Server and Linux operating systems within classified environments. o Manage Active Directory, Group Policy Objects (GPOs), LDAP, Identity Management (IdM), DNS, DHCP, and enterprise authentication services. o Administer enterprise server infrastructure supporting mission-critical applications. o Configure and maintain physical and virtual server environments. o Perform installation, configuration, maintenance, patching, upgrades, and lifecycle management of enterprise systems. o Monitor system health, availability, reliability, and performance. o Perform capacity planning and infrastructure optimization. o Develop and maintain system architecture documentation. Classified Network Operations o Support multiple classified networks operating within SCI and SAP environments. o Maintain system availability, integrity, confidentiality, and compliance. o Implement secure network configurations and system hardening measures. o Troubleshoot complex system, network, application, and interoperability issues. o Support government inspections, assessments, and accreditation activities. Cybersecurity & Information Assurance o Implement and maintain RMF controls. o Execute DISA STIG implementation and sustainment. o Conduct vulnerability assessments and remediation activities. o Analyze and remediate findings from: · ACAS · Nessus · HBSS · Splunk · SCAP Compliance Checker o Develop and maintain System Security Plans (SSPs). o Support cybersecurity audits and inspections. o Manage certificates, PKI infrastructure, and cryptographic solutions. o Implement and maintain security baselines. o Ensure compliance with: · DoD 8570 · DoD 8140 · NIST 800-53 · RMF · Air Force cybersecurity directives Linux Enterprise Administration o Administer Red Hat Enterprise Linux (RHEL), Rocky Linux, CentOS, and Ubuntu systems. o Configure and manage: · SELinux · FApolicyd · LDAP · IdM · SSH · NFS · DNS services o Perform Linux kernel tuning and performance optimization. o Troubleshoot operating system, service, and application issues. o Utilize advanced troubleshooting tools including: · tcpdump · netstat · ss · traceroute · ping · journalctl · systemctl Containerization & Platform Administration o Deploy and administer containerized environments utilizing: · Kubernetes · OpenShift · Docker · Podman o Support cluster management and orchestration. o Manage container networking, persistent storage, and platform security. o Administer: · Helm · Kustomize · CSI · CNI o Support DevSecOps initiatives and modernization efforts. o Automation & Infrastructure as Code o Develop and maintain automation solutions using: · Ansible · Terraform · Bash · PowerShell · Python o Automate provisioning, configuration management, patching, compliance validation, and reporting. o Integrate automation into CI/CD pipelines. o Support Git-based development and deployment environments. o Virtualization & Cloud Technologies o Administer VMware, vSphere, ESXi, and KVM environments. o Manage virtual machines, templates, storage, and resource allocation. o Support cloud-hosted and hybrid infrastructures where applicable. o Assist with migration and modernization initiatives. Backup & Disaster Recovery * Develop and maintain backup strategies. * Ensure successful completion of scheduled backups. * Conduct disaster recovery testing and recovery validation. * Maintain continuity of operations plans and procedures. Leadership & Technical Guidance * Serve as technical lead for systems administration activities. * Mentor junior system administrators. * Provide technical recommendations for infrastructure improvements. * Support engineering reviews, architecture discussions, and modernization initiatives. * Interface directly with government customers and senior leadership. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)