Linux Administrator

Skyline Technology Solutions, LLC•Glen Burnie, MD

4d•$80,000 - $100,000

About The Position

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

Requirements

3–5 years of Linux system administration experience in a professional IT environment
Hands-on experience with RHEL, CentOS, or Ubuntu in production environments
Red Hat 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

Responsibilities

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
Support Kubernetes environments
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