Senior Systems Engineer

Job Duties

• Install, configure, administer, patch, upgrade, and troubleshoot Linux servers and workstations.
• Support enterprise Linux distributions including RHEL, Rocky Linux, Ubuntu, Debian, or similar platforms.
• Manage users, permissions, services, packages, repositories, filesystems, storage, SSH, certificates, and system resources.
• Monitor system health, capacity, availability, and performance.
• Diagnose hardware, operating system, storage, network, and application-level issues. Virtualization & Containers Deploy and manage Linux virtual machines within KVM, Proxmox, VMware, or similar virtualization environments. Configure virtual networking, storage, templates, snapshots, and system resources. Deploy and support containerized applications using Docker, Podman, Docker Compose, or similar technologies. Support Kubernetes, K3s, or other container orchestration platforms as required. Assist development teams with application deployment, runtime configuration, and troubleshooting. Networking & Integration Configure and troubleshoot TCP/IP networking, routing, DNS, VLANs, firewalls, proxies, and application connectivity. Troubleshoot HTTP/HTTPS, REST APIs, WebSockets, SSH/SFTP, and other application protocols. Support reverse proxies, application proxies, and controlled ingress/egress architectures. Work with development and network teams to establish connectivity between applications, services, and external systems. Support rapid integration of new applications and technologies into development, test, and operational environments. DevSecOps & Automation Support Git-based development environments and CI/CD platforms such as GitLab, GitHub, or Bitbucket. Develop scripts and automation using Bash, Python, Ansible, or similar technologies. Automate common system administration, deployment, configuration, monitoring, and maintenance activities. Support Infrastructure-as-Code and configuration-as-code practices. Assist engineering teams with application builds, deployments, dependencies, and infrastructure requirements. Security & Operations Implement system hardening, patching, vulnerability remediation, and configuration-management requirements. Support DISA STIG implementation and applicable DoD cybersecurity controls. Assist cybersecurity teams with RMF activities and technical evidence collection. Configure and maintain logging, monitoring, backups, auditing, and system health capabilities. Maintain accurate system configurations, diagrams, procedures, and technical documentation. Support integration events, system demonstrations, testing, exercises, and other mission activities.
• Deploy and manage Linux virtual machines within KVM, Proxmox, VMware, or similar virtualization environments.
• Configure virtual networking, storage, templates, snapshots, and system resources.
• Deploy and support containerized applications using Docker, Podman, Docker Compose, or similar technologies.
• Support Kubernetes, K3s, or other container orchestration platforms as required.
• Assist development teams with application deployment, runtime configuration, and troubleshooting.
• Configure and troubleshoot TCP/IP networking, routing, DNS, VLANs, firewalls, proxies, and application connectivity.
• Troubleshoot HTTP/HTTPS, REST APIs, WebSockets, SSH/SFTP, and other application protocols.
• Support reverse proxies, application proxies, and controlled ingress/egress architectures.
• Work with development and network teams to establish connectivity between applications, services, and external systems.
• Support rapid integration of new applications and technologies into development, test, and operational environments.
• Support Git-based development environments and CI/CD platforms such as GitLab, GitHub, or Bitbucket.
• Develop scripts and automation using Bash, Python, Ansible, or similar technologies.
• Automate common system administration, deployment, configuration, monitoring, and maintenance activities.
• Support Infrastructure-as-Code and configuration-as-code practices.
• Assist engineering teams with application builds, deployments, dependencies, and infrastructure requirements.
• Implement system hardening, patching, vulnerability remediation, and configuration-management requirements.
• Support DISA STIG implementation and applicable DoD cybersecurity controls.
• Assist cybersecurity teams with RMF activities and technical evidence collection.
• Configure and maintain logging, monitoring, backups, auditing, and system health capabilities.
• Maintain accurate system configurations, diagrams, procedures, and technical documentation.
• Support integration events, system demonstrations, testing, exercises, and other mission activities.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Engineering, Cybersecurity, or related discipline; equivalent technical experience may be considered.
• 7-10+ years of Linux systems administration, systems engineering, DevOps, infrastructure engineering, or related experience.
• Strong Linux command-line administration and troubleshooting skills.
• Experience administering RHEL/Rocky Linux, Ubuntu, Debian, or comparable Linux systems.
• Experience with virtualization technologies such as KVM, Proxmox, VMware, or similar platforms.
• Experience deploying or supporting containerized applications.
• Strong understanding of TCP/IP networking, DNS, routing, firewalls, and application connectivity.
• Experience with Git and scripting or automation using Bash, Python, Ansible, or similar technologies.
• Understanding of system security, patch management, vulnerability remediation, and configuration management.
• Ability to independently troubleshoot problems spanning operating systems, networks, applications, and infrastructure.
• Strong technical communication and documentation skills.

Nice to Have Qualifications

• [Enter Desired Skills/Qualifications]

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