Systems Engineer - Level II (Linux Engineer)

An experienced Linux Engineer to join our infrastructure team and serve as a technical leader in the design, deployment, and operational management of our enterprise Linux environment. This role is responsible for maintaining a secure, highly available, and performant fleet of Linux servers and virtual desktops running across AWS and VMware platforms. The successful candidate will bring deep expertise in Linux administration, configuration management with Ansible, and security baseline hardening aligned with the CIS standard. Working closely with application owners, developers, and analytics engineers, the Linux Engineer will drive automation, enforce patching and vulnerability remediation, and ensure that our Linux infrastructure reliably supports mission-critical business and analytics workloads. Key Tasks & Responsibilities Linux Systems Administration & Troubleshooting Manage, maintain, and troubleshoot Linux servers deployed in AWS across a mixed distribution environment, including Amazon Linux 2023, Ubuntu 22.04 and later, and Red Hat Enterprise Linux 8 and 9 . Diagnose and resolve complex operating system, networking, storage, and performance issues across the server fleet. Make performance-based recommendations for server configuration changes to optimize workloads, cost, and reliability. Virtual Desktop Support Support and maintain Linux-based virtual desktop environments running on VMware and AWS WorkSpaces . Partner with end users and application teams to ensure a stable, secure, and productive virtual desktop experience. Security Baselines & Hardening Develop, deploy, and maintain Linux operating system baselines aligned with Center for Internet Security (CIS) benchmarks . Collaborate with application owners to customize security baselines as needed to enable application functionality without compromising the organization's security posture. Configuration Management & Automation Perform enterprise-wide configuration management using Ansible . Author, maintain, and version-control Ansible playbooks used to define system baselines, configurations, and repeatable operational tasks. Application Support & Collaboration Work directly with application owners, developers, and analytics engineers to deploy, upgrade, migrate, and maintain applications running on Linux. Serve as a trusted infrastructure partner during application lifecycle events, providing guidance on Linux best practices. Monitoring & Uptime Develop and maintain monitoring solutions for servers across the enterprise to ensure maximum system uptime and rapid incident detection. Continuously improve alerting, dashboards, and observability to reduce downtime. Patching & Vulnerability Remediation Oversee regular and ad-hoc system patching efforts to ensure timely vulnerability remediation in accordance with organizational SLAs. Monitor and enforce patching requirements using AWS Systems Manager . Cloud Infrastructure & Infrastructure-as-Code Deploy and manage infrastructure using AWS CloudFormation and AWS Service Catalog . Contribute to and maintain reusable, standardized infrastructure templates that streamline provisioning and enforce compliance. Education & Experience Required 3 or more years of hands-on experience managing Linux systems in a production environment. 2 or more years of experience performing configuration management using Ansible , including authoring and maintaining playbooks and roles. 2 or more years of experience supporting Linux virtual desktops . Demonstrated experience working in a large government, financial, regulatory, or corporate environment , where formal change management, security compliance, and audit requirements are standard. Preferred Bachelor's degree or higher Experience supporting analytics infrastructure , such as Hadoop clusters, AWS EMR , HPC grid clusters using SLURM, AWS Parallel Cluster , or other distributed computing platforms. Experience administering VMware virtual desktops or AWS WorkSpaces at scale. Proficiency with Python for automation, scripting, and tooling development. Certifications Preferred Red Hat certifications Amazon Web Services (AWS) certifications Security Clearance Public Trust High (Tier 4/BI) Risk Level Must be a US citizen or Lawful Permanent Resident Other (Travel, Work Environment, DoD 8570 Requirements, Administrative Notes, etc.) D.C or Remote Computer World Services is an affirmative action and equal employment opportunity employer. Current employees and/or qualified applicants will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, disability, protected veteran status, genetic information or any other characteristic protected by local, state, or federal laws, rules, or regulations. Computer World Services is committed to the full inclusion of all qualified individuals. As part of this commitment, Computer World Services will ensure that individuals with disabilities (IWD) are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact Human Resources at [email protected] .