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Dutech Systems Logo Dutech Systems · IT - Administration

Senior Systems Administrator (Windows & Linux Migration)

United States, Austin, TX · Job Posted April 19, 2026
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Job Description

We are seeking an experienced Senior Systems Administrator to support the migration and modernization of end-of-life (EOL) systems. This role will focus on upgrading legacy environments, including older versions of Windows Server and Red Hat Enterprise Linux (RHEL), to supported platforms to improve security, performance, and operational stability.

Job Responsibility

  • Lead migration and upgrade of legacy systems to supported versions of Windows Server (2016/2019/2022) and RHEL (7/8/9)
  • Administer and support both Windows and Linux (RHEL) environments
  • Perform in-place upgrades and fresh installations of operating systems
  • Troubleshoot and resolve issues in legacy and modernized environments
  • Implement system automation and scripting using Bash, PowerShell, and Ansible
  • Manage patching, system hardening, and vulnerability remediation
  • Support backup and recovery solutions for system reliability
  • Work with virtualization technologies (VMware) to support infrastructure needs
  • Utilize configuration management tools such as Ansible, SCCM, and PowerShell
  • Ensure compliance with security and operational standards

Requirements

  • 8+ years of experience with Windows Server and RHEL environments
  • Strong experience with RHEL (5/6/7/8/9) and Windows Server (2008–2022)
  • Proven experience with system migration and OS upgrades
  • Strong troubleshooting skills for legacy systems
  • Experience with automation and scripting (Bash, PowerShell)
  • Knowledge of system security, patching, and vulnerability management

Nice to have

  • Experience with configuration management tools (Ansible, SCCM)
  • Familiarity with virtualization technologies (VMware)
  • Experience with backup and disaster recovery solutions
  • Strong documentation and communication skills
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