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Senior Linux Engineer - TS/SCI with Polygraph

General Dynamics Information Technology
United Statesfull_timeVerifiedPosted 12 Dec 2025
💰 $206,958/yr($152,969/yr$206,958/yr)

About the role

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

Linux Environments, Red Hat Enterprise Linux (RHEL), Systems Engineering

Certifications:

None

Experience:

10 + years of related experience

US Citizenship Required:

Yes

Job Description:

Primary responsibilities include providing engineering and administrative support maintaining multiple large Enterprise environments. The supporting infrastructure includes multiple Microsoft based networks spanning multiple security enclaves within a hybrid (Windows & RHEL) operating environment.
 

Job Responsibilities & Duties:

  • System Engineering duties include management of both physical and VDI based Linux workstations and servers

  • Identify, design, and implement solutions using FOSS, COTS or GOTS products to enhance and meet customer requirements within the operating environment.

  • Troubleshoot user, workstation and application functionality, performance, and incident resolution for Linux based applications

  • Identifies, analyzes, and resolve incidents with both short-term workarounds and long-term solutions

  • Provide remote end user support and remotely work with and train geographically disperse Tier 2 and Tier 3 team members

  • Communicate effectively (in oral and written form) with a variety of individuals and team members in both small and large team environments

  • Willingness to participate in special projects as needed


WHAT YOU’LL NEED TO SUCCEED:

  • Education: Bachelor’s Degree in Computer Science, Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.

  • Required Experience: 10+ years of related Linux experience

  • Certification: Candidate must possess an appropriate and current DoD Information Assurance (IA) Certification to be considered for employment; either valid CompTIA Security+ CE, Systems Security Certified Practitioner (SSCP) or Cisco Certified Network Associate (CCNA)-Security. CompTIA Security+ CE Certification is the preferred certification. In addition, candidate must attain the required DoD 8570 Computing Environment (CE) Training within six (6) months of Hire Date.

  • Security Clearance Level: TS/SCI with Polygraph is required.

Successful candidates are expected to have related experience and knowledge/understanding of:

  • Linux Operating systems as a server or desktop such as Red Hat Enterprise Linux 7/8/9, CentOS 7/8/9/Stream, Scientific Linux, Fedora, Oracle Linux, Rocky Linux, Alma Linux, etc.

  • Integration and experience with Kerberos Authentication concepts and/or Microsoft Active Directory domain joined servers and workstations is a plus (SSSD, WinBind, etc.)

  • Strong understanding of DNS, DHCP and LDAP in a Windows or Linux environment

  • Operating system deployment and Configuration Management via Satellite and/or Ansible Automation Platform

  • Application Troubleshooting such as Firefox, Chrome, Java and/or Citrix based virtual applications such as Outlook, Excel, Word

  • Understanding of SMB/CIFS and NFS file sharing protocols

  • Linux scripting (Python, Perl, Ruby, Bash)

  • Understanding of ServiceNow, NETS or other ticketing systems

  • DoD STIG hardening

  • ITIL v3 or higher

The following knowledge/skill set is not required but is a plus:

  • Gnome desktop environments

  • Ability to create and deploy Ansible roles and playbooks

  • Github or Gitlab

  • Anaconda Kickstart

  • Red Hat Satellite or Foreman/Katello

  • CUPS print server

  • RPM package repositories

  • Demonstrated ability to build an RPM package

  • Windows 10, Serve

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Company

General Dynamics Information Technology

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