Job Description
Linux Systems Administrator/Engineer Crest Security Assurance - 3.0 Newport, RI Job Details Full-time | Contract $125,000 - $130,000 a year 2 days ago Benefits Relocation assistance Health insurance Dental insurance 401(k) Tuition reimbursement Paid time off Vision insurance 401(k) matching Life insurance Referral program Qualifications Containerization systems DevSecOps Practices Computer science Content creation for technical audiences Computer Science Continuous Delivery (CD) implementation Linux support Tooling Technical documentation Network configuration Secret Clearance Bash Information security compliance Bachelor's degree Systems engineering Server virtualization CompTIA Linux+ Agile System development DevOps automation Cybersecurity Network infrastructure management Technical writing within technology Linux administration Python Full Job Description Linux Systems Engineer /
Administrator Location:
Newport, RI Clearance Requirement:
Active Secret Clearance Required (Top Secret Preferred) Travel:
Approximately 5% CONUS travel with advance notice provided whenever possible Relocation Assistance:
Available Position Overview:
We are seeking a motivated and mission-focused Linux Systems Engineer / Administrator to support advanced tactical and cybersecurity-focused systems in a dynamic Department of Defense environment. The ideal candidate will possess strong Linux systems administration expertise, hands-on cybersecurity experience, and a willingness to work across systems engineering, platform hardening, automation, and operational support activities. This role supports the engineering, security, integration, and sustainment of mission-critical systems operating in complex networked environments. Candidates should be comfortable collaborating with cross-functional engineering teams, participating in technical reviews, and contributing to secure systems modernization efforts. Responsibilities:
Administer, maintain, and secure Linux-based systems in operational and development environments Implement and maintain Linux system hardening in accordance with DISA STIGs and cybersecurity best practices Manage firewall configurations, networking services, privilege management, and access controls Support systems engineering efforts by evaluating and implementing engineering changes and cybersecurity enhancements Develop and maintain shell scripts and Python-based automation solutions to improve operational efficiency and system reliability Assist with deployment and sustainment of containerized applications using Kubernetes or similar orchestration platforms Participate in CI/CD pipeline development and maintenance including automated testing, SAST/DAST integration, and deployment workflows Support cybersecurity assessments, vulnerability remediation activities, and RED TEAM
exercises Analyze penetration testing results and recommend mitigation or remediation strategies Collaborate with engineering, cybersecurity, and operations teams during trade studies, integration efforts, and technical reviews Provide on-site technical support during testing events, system installations, and fleet or vendor visits as required Maintain documentation related to system configurations, engineering changes, security controls, and operational procedures Develop and maintain technical documentation including system procedures, engineering artifacts, implementation plans, test plans, and test reports Support system integration and Test & Evaluation (T&E) activities through test planning, execution support, documentation, and reporting Coordinate with engineering and cybersecurity teams to document system changes, validation activities, and remediation efforts Required Qualifications:
Significant experience with Linux systems administration in enterprise or mission-critical environments Strong understanding of: Linux networking Linux filesystems Privilege and identity management System hardening and STIG compliance Bash shell scripting Python programming o Network enumeration o Privilege escalation Familiarity with CI/CD pipelines and DevSecOps concepts including: Automated tooling Unit testing Static and dynamic application security testing (SAST/DAST) Experience working in containerized environments using Kubernetes or equivalent orchestration tools Ability to troubleshoot complex Linux systems and networking issues Strong technical writing and verbal communication skills Active Secret Security Clearance or eligibility for reinstatement Experience managing and maintaining virtualized environments including virtual machine (VM) creation, configuration, administration, and lifecycle management Preferred Qualifications Advanced Linux expertise including: Filesystem administration and manipulation Encryption and key management SELinux administration ACL and IMA labeling Experience supporting tactical networks, critical infrastructure, or defense systems Experience working within a Scaled Agile Framework (SAFe) environment Familiarity with undersea domain systems or submarine platforms Prior experience supporting DoD cybersecurity initiatives or classified environments Experience with virtualization technologies and VM management in enterprise or lab environments (VMware, KVM, VirtualBox, Hyper-V, or equivalent) Education Bachelor's degree in Engineering, Information Systems, Computer Science, Cybersecurity, or related technical discipline preferred or equivalent military or industry experience may be considered in lieu of degree Why Join Us:
You will work alongside highly skilled engineers and cybersecurity professionals supporting mission critical defense systems that directly contribute to national security. This role offers opportunities for technical growth, hands-on operational support, and participation in cutting-edge cybersecurity and systems engineering initiatives. Job Types:
Contract, Full-time Pay:
$125,000.00 - $130,000.00 per year Benefits:
401(k) 401(k) matching Dental insurance Health insurance Life insurance Paid time off Referral program Tuition reimbursement Vision insurance Compensation Package:
1099 contract Bonus pay Performance bonus Signing bonus Yearly pay Education:
Bachelor's (Required) Experience:
Cybersecurity:
1 year (Required) Systems Engineering:
2 years (Required) Linux Administration:
3 years (Preferred) License/Certification:
CompTIA Linux+ (Required) Security clearance: Secret (Required) Work Location:
In person
