Senior Linux Engineer: Azure, Security & Automation

Gdh Consulting, Inc.; Montgomery (AL); On-site; USD 76,000 - 90,000; Full time

Job summary

GDH is seeking a senior Linux administrator to manage and secure RedHat and Ubuntu servers across on‑premises and Azure Gov environments. The role focuses on maintaining operations, implementing security controls, and supporting critical infrastructure in Montgomery, Alabama.

Responsibilities include patching, automation with Bash and PowerShell, Docker workloads, Azure DevOps integration, and compliance with CIS benchmarks. On‑site, full‑time position with background checks.

Qualifications

• 8+ years of practical Linux administration experience within enterprise or government environments, with a focus on Ubuntu Server LTS releases.
• Proven experience working with Linux in Azure cloud environments, including networking, Azure Key Vault, and managed identity integration.
• Hands‑on experience with Azure DevOps, pipelines, repositories, and CI/CD workflows involving Linux-based applications and containers.
• Proficiency in Docker, including secrets management, vulnerability scanning, and working outside of Kubernetes clusters.
• Advanced Bash scripting and working knowledge of PowerShell for cross‑platform automation tasks.
• Solid understanding of security hardening techniques, such as SSH, UFW, AppArmor, systemd, and SSL/TLS certificate management.
• Ability to independently manage systems with minimal peer support, collaborating within interdisciplinary security and IT teams.
• Excellent problem‑solving skills and the ability to adapt to fast‑changing technical environments.

Responsibilities

• Administer, configure, troubleshoot, and maintain RedHat and Ubuntu Server virtual machines and physical servers across production and non-production environments.
• Implement and uphold security hardening standards aligned with CIS benchmarks, utilizing tools such as Azure Defender for Cloud and Azure Policy.
• Manage system patching processes using Ubuntu Pro and APT, ensuring system stability and minimizing downtime through automated procedures.
• Develop and maintain automation scripts using Bash and PowerShell to streamline system operations across Linux and Azure platforms.
• Support Azure DevOps pipelines, source control, CI/CD workflows, and Docker deployments supporting Linux environments.
• Manage container workloads with Docker, including integration with Azure Key Vault for secrets management and vulnerability scanning via Azure Container Registry.
• Maintain identity and access management configurations, including SSSD, sudoers governance, and PAM settings, to secure Linux systems.
• Oversee storage and filesystem management, including LVM, XFS, and EXT4, ensuring proper partitioning and mount configurations following security best practices.
• Collaborate with cybersecurity teams to support audit activities, logging, and compliance reporting, leveraging audited and Azure-native security tools.

Skills

Linux administration

Azure cloud

Bash scripting

PowerShell

Security hardening

Automation

Tools

Docker

Azure DevOps

Azure Key Vault

Azure Policy

Ubuntu Pro

APT

LVM

XFS

Job description

GDH is seeking a senior Linux administrator to manage and secure RedHat and Ubuntu servers across on‑premises and Azure Gov environments. The role focuses on maintaining operations, implementing security controls, and supporting critical infrastructure in Montgomery, Alabama.

Responsibilities include patching, automation with Bash and PowerShell, Docker workloads, Azure DevOps integration, and compliance with CIS benchmarks. On‑site, full‑time position with background checks.