Senior Linux Systems Engineer — Hybrid (RHEL Expert)

System One, Inc.; Florida; Hybrid; USD 90,000 - 120,000; Full time

Job summary

System One, Inc. is seeking a Linux Systems Engineer in Melbourne or Miramar, FL to design, implement, and secure enterprise Linux platforms, focusing on RHEL with Ubuntu support.

The role covers administration, hardening, patching, and automation across development, test, and production environments. The ideal candidate has 4–6 years of Linux admin experience, strong scripting (Bash, Python, Ansible), cloud/hybrid infrastructure experience, and a four-year degree or equivalent.

Qualifications

• 4–6 years of responsible Linux systems administration experience in enterprise environments.
• Strong hands-on experience with Red Hat Enterprise Linux, server patching, troubleshooting, and security hardening.
• Proficiency in scripting and automation using Bash, Python, Ansible, or similar tools.
• Experience supporting virtualized, cloud, and hybrid infrastructures.
• Four-year degree in Information Systems, Computer Science, Computer Engineering, or related field preferred; equivalent education, certifications and experience considered.
• Experience in regulated industries such as financial services, healthcare, or government highly preferred.

Responsibilities

• Design, implement, maintain, and secure enterprise Linux platforms focusing on Red Hat Enterprise Linux, with support for distributions such as Ubuntu and related variants.
• Administer, troubleshoot, and optimize Linux servers, ensuring high availability, security, and compliance across development, testing, and production environments.
• Configure, patch, upgrade, and harden Linux OS and core services including user management, SSH, sudo, PAM, SELinux, and firewall configuration.
• Monitor system performance, analyze logs, perform tuning, and conduct proactive maintenance to ensure operational health and capacity planning.
• Implement security and compliance measures using SCAP, STIG, CIS benchmarks, and NIST controls; prepare documentation for audits and reviews.
• Support workloads hosted on virtual, cloud, and hybrid infrastructures, including integration with VMware, storage, backup, and networking solutions.
• Develop automation scripts and tools for provisioning, patching, configuration management, and routine administrative tasks using Bash, Python, Ansible, or similar technologies.
• Provide advanced troubleshooting and root cause analysis for incidents impacting OS, middleware, applications, storage, network, or security.
• Participate in platform upgrades, migrations, lifecycle management, and change activities following operational and risk management protocols.
• Create and maintain technical documentation, runbooks, standards, and procedures to ensure operational consistency and knowledge sharing.
• Collaborate with cybersecurity, network, database, cloud, and application teams to support secure and resilient enterprise services.

Skills

Linux administration

Red Hat Enterprise Linux

Scripting: Bash

Python

Ansible

Security hardening

Cloud/hybrid infrastructure

Education

Bachelor’s degree in Information Systems/CS/CE or related field

Tools

VMware

SSH

Job description

System One, Inc. is seeking a Linux Systems Engineer in Melbourne or Miramar, FL to design, implement, and secure enterprise Linux platforms, focusing on RHEL with Ubuntu support.

The role covers administration, hardening, patching, and automation across development, test, and production environments. The ideal candidate has 4–6 years of Linux admin experience, strong scripting (Bash, Python, Ansible), cloud/hybrid infrastructure experience, and a four-year degree or equivalent.