Senior Linux Systems Engineer - DoD Cybersecurity

ADP; Newport (RI); On-site; USD 125,000 - 130,000; Full time

Job summary

ADP is seeking a Linux Systems Engineer/Administrator to support mission‑critical DoD systems in Newport, RI. The role demands strong Linux administration, security-focused hardening, and automation across CI/CD and DevSecOps practices.

Responsibilities include implementing DISA STIGs, managing containers with Kubernetes, and supporting engineering, security, and operations teams. A Secret clearance is required, with ~5% travel and a focus on secure modernization.

Qualifications

• Significant experience with Linux systems administration in enterprise or mission-critical environments.
• Experience with Linux hardening and STIG compliance (DISA STIGs).
• Familiarity with CI/CD pipelines and DevSecOps concepts (Automated tooling, Unit testing, SAST/DAST).
• Experience with containerized environments using Kubernetes or equivalent orchestration tools.
• Active Secret Security Clearance or eligibility for reinstatement.
• Experience managing and maintaining virtualized environments (VM creation, configuration, administration, lifecycle).

Responsibilities

• Administer, maintain, and secure Linux-based systems in operational and development environments.
• Implement and maintain Linux system hardening per DISA STIGs and cybersecurity best practices.
• Manage firewall configurations, networking services, privilege management, and access controls.
• Develop and maintain shell scripts and Python-based automation to improve operations.
• Assist with deployment and sustainment of containerized apps using Kubernetes or similar.
• Participate in CI/CD pipeline development and maintenance including SAST/DAST integration.
• Support cybersecurity assessments and vulnerability remediation activities.
• Analyze penetration testing results and recommend mitigations.
• Maintain documentation including system configurations, security controls, and procedures.
• Coordinate with engineering and security teams on changes and remediation.]
• CoT_job_summary_short
• COMPANY NAME: ADP
• KEY POINTS: Linux systems engineering in DoD environment, security clearance, automation, Kubernetes, CI/CD
• job_summary_short
• <p>ADP is seeking a Linux Systems Engineer/Administrator to support mission‑critical DoD systems in Newport, RI. The role demands strong Linux administration, security-focused hardening, and automation across CI/CD and DevSecOps practices.</p><p>Responsibilities include implementing DISA STIGs, managing containers with Kubernetes, and supporting engineering, security, and operations teams. A Secret clearance is required, with ~5% travel and a focus on secure modernization.</p>
• contract_type
• fulltime
• location_type
• on site
• remote_scope
• null
• perks
• []
• stated_min
• 125000
• stated_max
• 130000
• stated_absolute
• null
• salary_estimation_cot
• Linux Systems Engineer in Newport, RI: market rate 125k–130k USD gross annually.
• estimated_low
• 125000
• estimated_medium
• 127500
• estimated_high
• 130000
• currency
• USD
• frequency
• yearly
• bonus
• null
• tax
• gross
• application_email
• null
• job_end_date
• null
• contact_person
• null
• hiring_department_name
• null

Skills

Linux administration

Bash scripting

Python programming

CI/CD pipelines

DevSecOps concepts

SAST/DAST

Kubernetes

Troubleshooting

Technical writing

Security clearance

Education

Bachelor's degree in Engineering/Information Systems/CS/Cybersecurity

Tools

Kubernetes

VMware

KVM

Hyper-V

Job description

ADP is seeking a Linux Systems Engineer/Administrator to support mission‑critical DoD systems in Newport, RI. The role demands strong Linux administration, security-focused hardening, and automation across CI/CD and DevSecOps practices.

Responsibilities include implementing DISA STIGs, managing containers with Kubernetes, and supporting engineering, security, and operations teams. A Secret clearance is required, with ~5% travel and a focus on secure modernization.