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Sr. VMWare/Linux AdministratorF2OnSite • Houston, TX, United States
Sr. VMWare/Linux Administrator

Sr. VMWare/Linux Administrator

F2OnSite • Houston, TX, United States
2 days ago
Job type
  • Full-time
Job description
Sr. VMWare/Linux Administrator
  • Location - Downtown Houston, TX
  • Hybrid: 4 days onsite, 1 day remote
  • Employment Type: long-term assignment
Key Responsibilities
  • Lead vulnerability remediation activities across VMware ESXi clusters, vCenter, and associated virtualization components.
  • Perform ESXi patching, upgrades, and lifecycle management using VMware Lifecycle Manager (vLCM).
  • Execute remediation of critical vulnerabilities (CVEs) across hypervisors and supporting infrastructure within defined SLAs.
  • Plan and implement rolling upgrades for ESXi hosts in clustered production environments with zero/minimal downtime.
  • Perform RHEL (8.x, 9.x) and SUSE (12.x, 15.x) OS patching, upgrades, and migrations.
  • Design and implement automated patching using Red Hat Ansible Automation Platform (AAP).
  • Create, test, and maintain Ansible playbooks and workflows for Linux and ESXi remediation activities.
  • Conduct root cause analysis for patching failures, performance degradation, and host instability issues.
  • Perform firmware and BIOS upgrades for server hardware hosting ESXi (including HMC and CECs where applicable).
  • Manage filesystem, user administration, kernel tuning, and performance troubleshooting in heterogeneous Linux/AIX environments.
  • Coordinate with infrastructure, storage, and network teams to validate compatibility matrices before upgrades.
  • Develop SOPs, remediation runbooks, rollback procedures, and audit documentation for compliance and governance.
Core Skills Required
  • Strong hands-on expertise in VMware ESXi patching, upgrades, vCenter administration, and cluster management.
  • Deep knowledge of vulnerability remediation in virtualized environments (Rapid7/Tenable integration preferred).
  • Advanced RHEL administration (RHEL 8.x & 9.x) including YUM/DNF patching and kernel management.
  • Experience with Red Hat Ansible Automation Platform for automated OS and hypervisor patching.
  • Strong troubleshooting skills across Linux, ESXi, and underlying hardware/firmware layers.
  • Proficiency in scripting (Bash, Shell, or Python) for automation and remediation activities.
Additional Information
  • All candidates are encouraged to apply, but many positions require a strict drug and background check by our customers.
  • F2OnSite supports and adheres to all state laws regarding background checks.
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Sr. VMWare/Linux Administrator • Houston, TX, United States

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