1853 - Senior Linux Engineer - Onsite - Top Secret Clearance Required - Bonus Eligible

Rollout Systems•Bethesda, OH

9d•$165,000 - $195,000•Onsite

About The Position

Rollout Systems is seeking a highly motivated Senior Linux Engineer to work onsite supporting enterprise IT for a war-fighter customer. The role administers and sustains Linux systems across physical, virtual, and cloud environments, provides Tier I–III operational support, and leads incident recovery and root-cause investigations. It also focuses on enterprise automation with Ansible Automation Platform (AAP), scripting, CI/CD and configuration-as-code practices, and security compliance aligned with DISA STIGs, RMF, and NIST SP 800-53. The engineer mentors junior personnel and maintains architecture and operational documentation. The position requires an active Top Secret clearance, substantial Linux administration and operations experience, advanced automation and scripting capabilities, specified DoD and Red Hat certifications, and an associate degree or higher in a relevant field. The role is onsite. The stated likely salary range is $165,000–$195,000 annually; compensation may vary based on experience, location, and contractual requirements.

Requirements

10+ years of hands-on Linux system administration experience.
5+ years of full-time operations and maintenance experience demonstrating expert knowledge of Linux security and network/distributed computing concepts.
5+ years of experience writing and maintaining Linux shell and Perl scripts; expert scripting ability, strong Python and Bash skills, and experience diagnosing scripting errors.
3+ years of hands-on AAP experience, including platform administration, complex playbooks, roles, custom collections, reusable automation content, and Execution Environments built with ansible-builder.
At least 1 year of help desk or direct IT customer support experience, demonstrating communication, teamwork, and customer service skills; familiarity with ServiceNow incident workflows.
Deep RHEL internals knowledge, including RHEL 8/9, and working knowledge of CentOS, Rocky Linux, and Ubuntu.
Strong CLI proficiency using systemd, journalctl, /var/log, chmod, chown, yum, dnf, apt, ping, netstat, and ss.
Experience with LDAP, NFS, DNS, SSH, Active Directory integration, account and access management, sudoers, SELinux, Linux storage administration, and secure image deployment.
Experience troubleshooting kernel, service, security, and performance issues; tuning CPU, memory, and I/O; and supporting routing, firewalls, and distributed systems.
Experience with SAN/NAS, RAID, multipathing, backups/restores, high availability, clustering, and virtualization platforms including VMware ESXi, Hyper-V, Linux KVM, and Xen/XCP-NG.
Experience with Docker, GitLab CI/CD, GitOps, configuration as code, Red Hat Satellite, and automation integrations.
Experience implementing and automating DISA STIG compliance, Linux hardening, ACAS remediation, and vulnerability management using RMF and NIST SP 800-53 controls.
Experience leading major outage recovery, performing root cause analysis, forensic investigation, and log correlation.
Experience mentoring technical personnel and preparing architecture documentation, SOPs, and recovery procedures.
Completed Linux operating system training and maintained it as current throughout employment.
DoD IAT Level III baseline certification, such as CompTIA SecurityX CE (formerly CASP+), CISSP, CISA, CCNP Security, GCED, or GCIH.
Red Hat Certified System Administrator (RHCSA) and Red Hat Certified Engineer (RHCE).
Active Top Secret Security Clearance.
Associate’s degree or higher in Computer Engineering, Computer Science, or Information Technology from an accredited college or university.

Responsibilities

Install, configure, administer, patch, and sustain enterprise Linux servers and workstations across physical, virtual, and cloud environments.
Manage accounts, groups, permissions, access controls, system services, repositories, SELinux, LVM, partitions, and filesystems.
Administer and troubleshoot LDAP, NFS, DNS, SSH, and enterprise identity services, including integration with Windows Active Directory.
Provide Tier I–III operational support, including ServiceNow incident intake, triage, escalation, customer communication, and resolution.
Diagnose kernel, boot, service, security, networking, and performance issues using system diagnostics and log analysis.
Lead major outage response, root cause analysis, forensic investigation, and service restoration; tune CPU, memory, and I/O performance and implement corrective actions to prevent recurrence.
Administer SAN/NAS storage, RAID, multipathing, backups, and restores.
Support application deployments, virtualization, high availability, clustering, and disaster recovery, and validate recovery procedures.
Deploy, upgrade, administer, and optimize AAP 2.x, including Automation Controller, Private Automation Hub, Execution Environments, inventories, projects, credentials, templates, workflows, and RBAC.
Develop, test, troubleshoot, and maintain Ansible playbooks, roles, collections, and Python, Bash, and Perl scripts for provisioning, patching, configuration management, diagnostics, reporting, and routine operations.
Build Execution Environments using ansible-builder and modernize legacy Tower/AWX workflows.
Integrate automation with ServiceNow, Git/GitLab, Red Hat Satellite, Splunk, Dynatrace, vulnerability-management platforms, and monitoring tools.
Maintain GitLab CI/CD, GitOps, configuration-as-code practices, and Docker container operations.
Implement and automate DISA STIG configurations, ACAS remediation, Linux hardening, and compliance activities supporting RMF and NIST SP 800-53 controls.
Maintain architecture diagrams, operational procedures, configuration records, and recovery instructions.
Mentor Tier I and Tier II personnel in administration, troubleshooting, escalation, and customer support.

Benefits

Generous PTO/leave package and paid time off.
11 paid federal holidays.
Medical, dental, and vision plans; health insurance includes domestic partner coverage.
Company-funded health savings account.
Short-term and long-term disability insurance.
Life insurance.
Accidental death and dismemberment coverage.
401(k) retirement plan with matching.
401(k) profit-sharing plan.
Free training and development subscription.
Tuition assistance and education assistance.