Linux Network Engineer

Jobtailor; North Charleston (SC); On-site; USD 90,000 - 130,000; Full time

Job summary

Jobtailor in North Charleston, SC, is seeking an experienced systems administrator to join our DoD-focused team. You will support Cisco networking, Red Hat-based systems, and VMware/OpenShift virtualization, build air‑gapped environments, and help automate tasks across lab and production resources.

Responsibilities include designing infrastructure, maintaining internal mirrors and repositories, implementing CI/CD practices, and ensuring security and reliability while collaborating with users and

Qualifications

• DoD Secret level security clearance or ability to obtain one.
• Minimum of three years of relevant experience.
• Bachelor’s degree in Computer Science, Engineering or a related field.
• Currently hold at least ONE security related certification (Security+, CISSP, etc.) PLUS one OS related certification (Linux+, CCNA, etc.)
• Web server and application server configuration and scaling, e.g., Apache HTTP server, IIS
• Proven systems administration and maintenance experience
• Working knowledge of Subversion software versioning and revision control system
• Understanding of core Internet protocols (HTTP, DNS, SMTP, etc.)
• Experience with backup and recovery best practices
• Experience with Storage Volume management (LVM, iSCSI, SMB, NFS)
• Experience with a major Linux distribution, e.g., Red Hat, CentOS, Debian
• Experience with virtual environments, e.g., VMware, Hyper‑V
• DBA skills with at least one RDBMS, e.g., MySQL, Postgres, Oracle
• Strong computer hardware and software background
• Mid-level skill set in Windows Systems Administration
• Strong troubleshooting and analytical skills
• Excellent written and verbal communication skills
• Strong attention to detail
• Strong work ethic and commitment to quality
• Ability to work in a fast‑paced environment, multitask, and balance multiple goals and priorities
• Ability to work collaboratively with users and customers
• Willingness to work overtime as needed

Responsibilities

• Provide advanced support for Cisco-based networking environments across lab and C2OIX environments
• Serve as a secondary/backup network engineer for lab operations, troubleshooting, configuration, and maintenance
• Support the design, implementation, and optimization of network infrastructure
• Design and build complex Red Hat-based systems for isolated, fully air-gapped environments
• Create and maintain internal mirrors for Red Hat repositories and container registries
• Manage transfer and deployment of repositories and containers into air-gapped labs
• Configure downstream systems to use internal mirrors and repositories
• Develop scripts and tools to automate system tasks and maintain automation pipelines
• Deploy, configure, and maintain VMware and oVirt virtualization platforms
• Support virtualization lifecycle operations, performance tuning, and troubleshooting
• Build and maintain containerization infrastructure, including OpenShift clusters from bare metal
• Manage container platform operations, upgrades, reliability, and supporting services
• Apply DevOps methodologies and support CI/CD concepts for containerization, orchestration, and infrastructure management
• Administer Windows and Linux systems in virtual and physical environments across R&D, development, and production resources
• Install, maintain, and support Windows and Linux servers, workstations, and applications
• Support users of a Linux-based Help System
• Administer network assets in NetWeb and maintain accurate asset and patch-status records
• Troubleshoot end-to-end networking issues involving switches, routers, workstations, servers, VLANs, and other IT devices and services
• Identify end-of-life issues, ensure applications are approved in DADMS, and upgrade as needed
• Provide user support for accounts, CACs, HBSS, printing, access, SITC, drive mapping, and related issues
• Track and resolve local hardware and software issues
• Perform patching, upgrades, migrations, and other regular maintenance
• Review and recommend changes to the Preventative Maintenance Plan

Skills

Cisco Networking Support

Red Hat Systems Administration

VMware Virtualization Management

Security+ Certification

Linux+ Certification

Education

Bachelor's degree in Computer Science, Engineering or related field

Tools

OpenShift

Apache HTTP Server

IIS

Subversion

VMware

Hyper-V

PostgreSQL

Job description

• Provide advanced support for Cisco-based networking environments across lab and C2OIX environments
• Serve as a secondary/backup network engineer for lab operations, troubleshooting, configuration, and maintenance
• Support the design, implementation, and optimization of network infrastructure
• Design and build complex Red Hat-based systems for isolated, fully air-gapped environments
• Create and maintain internal mirrors for Red Hat repositories and container registries
• Manage transfer and deployment of repositories and containers into air-gapped labs
• Configure downstream systems to use internal mirrors and repositories
• Develop scripts and tools to automate system tasks and maintain automation pipelines
• Deploy, configure, and maintain VMware and oVirt virtualization platforms
• Support virtualization lifecycle operations, performance tuning, and troubleshooting
• Build and maintain containerization infrastructure, including OpenShift clusters from bare metal
• Manage container platform operations, upgrades, reliability, and supporting services
• Apply DevOps methodologies and support CI/CD concepts for containerization, orchestration, and infrastructure management
• Administer Windows and Linux systems in virtual and physical environments across R&D, development, and production resources
• Install, maintain, and support Windows and Linux servers, workstations, and applications
• Support users of a Linux-based Help System
• Administer network assets in NetWeb and maintain accurate asset and patch-status records
• Troubleshoot end-to-end networking issues involving switches, routers, workstations, servers, VLANs, and other IT devices and services
• Identify end-of-life issues, ensure applications are approved in DADMS, and upgrade as needed
• Provide user support for accounts, CACs, HBSS, printing, access, SITC, drive mapping, and related issues
• Track and resolve local hardware and software issues
• Perform patching, upgrades, migrations, and other regular maintenance
• Review and recommend changes to the Preventative Maintenance Plan

Requirements

• Ability to obtain and maintain a Department of Defense (DoD) Secret level Security Clearance
• Minimum of three years of relevant experience
• Bachelor’s degree in Computer Science, Engineering or a related field
• Currently hold at least ONE security related certification (Security+, CISSP, etc.) PLUS one OS related certification (Linux+, CCNA, etc.)
• Web server and application server configuration and scaling, e.g., Apache HTTP server, IIS
• Proven systems administration and maintenance experience
• Working knowledge of Subversion software versioning and revision control system
• Understanding of core Internet protocols (HTTP, DNS, SMTP, etc.)
• Experience with backup and recovery best practices
• Experience with Storage Volume management (LVM, iSCSI, SMB, NFS)
• Experience with a major Linux distribution, e.g., Red Hat, CentOS, Debian
• Experience with virtual environments, e.g., VMware, Hyper‑V
• DBA skills with at least one RDBMS, e.g., MySQL, Postgres, Oracle
• Strong computer hardware and software background
• Mid-level skill set in Windows Systems Administration
• Strong troubleshooting and analytical skills
• Excellent written and verbal communication skills
• Strong attention to detail
• Strong work ethic and commitment to quality
• Ability to work in a fast‑paced environment, multitask, and balance multiple goals and priorities
• Ability to work collaboratively with users and customers
• Willingness to work overtime as needed

Core Competencies

Demonstrates expertise in Cisco Networking, Red Hat Systems, and VMware Virtualization, with a strong focus on automation, containerization, and systems administration. Holds relevant security and OS certifications, ensuring compliance and operational excellence in complex environments.

Highest-signal resume keywords

• Cisco Networking Support
• Red Hat Systems Administration
• VMware Virtualization Management
• Security+ Certification
• Linux+ Certification

Hard Skills

• Cisco Networking
• Red Hat Systems
• VMware
• Linux Administration
• Windows Administration
• Containerization
• DevOps Methodologies
• Backup and Recovery
• Database Administration
• Network Troubleshooting

Soft Skills

• Strong Attention to Detail
• Excellent Communication Skills
• Analytical Skills
• Work Ethic
• Collaboration

Certifications & Qualifications

• Security+
• CISSP
• Linux+
• CCNA

Industry Keywords

• Department of Defense
• Air-Gapped Environments
• Virtualization Lifecycle
• Preventative Maintenance
• CI/CD Concepts

Tools & Technologies

• Apache HTTP Server
• IIS
• Subversion
• OpenShift
• LVM
• ISCSI
• SMB
• NFS
• Hyper‑V
• Postgres