Linux Administrator

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process. Full Time Glen Burnie, MD, US 7 days ago Requisition ID: 1144 Salary Range: $80,000.00 to $100,000.00 Annually We are seeking a Linux administrator responsible for the administration and operational support of enterprise Linux infrastructure with an emphasis on systems performance, application hosting, and automation. This position works alongside senior engineers and architects to contribute to initiatives that improve reliability, scalability, and operational efficiency. You can expect to spend your time accomplishing the following: 60% of the time on Objective 1: Linux System Administration 40% of the time on Objective 2: Application & Middleware Management Job Responsibilities – What to Expect Administer and support enterprise Linux environments (RHEL, CentOS, Ubuntu), applying consistent, repeatable configurations through Ansible and AWX Treat all system configurations as code, maintaining server build standards, configuration baselines, and operational settings in Git repositories with proper branching, peer review, and change approval workflows before any deployment to production Perform troubleshooting, performance analysis, and capacity planning for Linux systems, leveraging automated monitoring and alerting through OpenNMS and Grafana Cloud to identify and respond to issues proactively Manage the full server lifecycle, provisioning, patching, hardening, and decommissioning through automated pipelines and Ansible playbooks, ensuring every lifecycle event is traceable, auditable, and repeatable Server provisioning executed through AWX job templates with standardized, version‑controlled playbooks Patching workflows automated and scheduled through Ansible, with pre and post‑validation steps built into the pipeline Hardening standards maintained as code and applied consistently across all systems at build time and enforced through regular compliance scans Decommissioning procedures documented and executed through runbooks maintained in Git Implement and maintain system security controls in support of SOC2 and ISO20000 compliance requirements, ensuring compliance baselines are defined as code, automatically applied, and continuously validated through automated reporting Maintain system documentation including architecture diagrams, operational runbooks, and capacity reports, stored and version‑controlled alongside Install, configure, and maintain enterprise applications with all configurations managed as code through Ansible and stored in Git, ensuring no application platform configuration exists outside of version control Application configuration changes follow GitOps pull request and peer review workflows prior to deployment, maintaining a clear and auditable change history Automated configuration drift detection ensures deployed application states remain consistent with approved, version‑controlled baselines Monitor application performance using Alloy and Grafana Cloud, with automated alerting workflows triggering defined remediation runbooks; coordinate with development teams on system‑level issues identified through monitoring data Support Linux-hosted database platforms, including performance monitoring, basic tuning, and backup management Manage containerized workloads using Docker Collaborate with application owners to define and document deployment standards, resource requirements, and patching schedules, ensuring agreed standards are reflected in version‑controlled automation templates and enforced through AWX workflows rather than managed through ad hoc processes Support automated monitoring, alerting, and remediation workflows using, Alloy, OpenNMS and Grafana Cloud Write scripted solutions to reduce manual, repetitive processes Follow and contribute to reusable automation frameworks, templates, and documentation for division-wide use Maintain Git‑based workflows for infrastructure code in alignment with change management procedures. In the team's Git repository to ensure documentation remains current and reflects the actual state of the environment Your Knowledge & Expertise 3–5 years of Linux system administration experience in a professional IT environment Hands‑on experience with RHEL, CentOS, or Ubuntu in production environments RedHat Certified System Administrator (RHCSA) or actively pursuing certification Working knowledge of application hosting platforms and middleware on Linux Foundational experience with Ansible or similar configuration management tools Scripting proficiency in Bash; Python experience a plus Basic familiarity with containerization concepts (Docker, Podman) Exposure to monitoring platforms such as OpenNMS, Grafana, Nagios, or equivalent Familiarity with Git and basic version control workflows Excellent written and verbal communication skills with ability to explain complex technical concepts to varied audiences Strong collaboration skills with the ability to work effectively across engineering, platform, and operations teams Exposure to CI/CD concepts or pipeline tools Experience working in a managed services or enterprise IT environment Familiarity with database administration basics on Linux platforms #J-18808-Ljbffr