Systems Administrator Job at Robert Half, Okmulgee County, OK

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  • Robert Half
  • Okmulgee County, OK

Job Description

We are seeking an experienced Systems Administrator to manage and optimize our virtualized infrastructure and network environment. This role requires deep expertise in VMware technologies , LAN/WAN administration , and proven leadership skills to guide projects and mentor junior team members. The ideal candidate will ensure system reliability, security, and performance while driving operational excellence.

Key Responsibilities

Virtualization & Server Management

  • Administer and maintain VMware vSphere, ESXi hosts, vCenter Server , and related virtualization components.
  • Perform VM provisioning, resource allocation, snapshots, and performance tuning .
  • Manage Windows/Linux servers , patching, and OS-level troubleshooting.
  • Implement high availability (HA), DRS clusters , and disaster recovery strategies.

Networking (LAN/WAN)

  • Configure and maintain LAN/WAN infrastructure , including switches, routers, firewalls, and VPNs.
  • Monitor network performance, troubleshoot connectivity issues, and optimize bandwidth usage.
  • Ensure network security through VLAN segmentation, ACLs, and firewall policies.
  • Collaborate with network engineers on QoS, routing protocols, and IP addressing schemes .

Storage & Backup

  • Manage SAN/NAS storage systems , provisioning, and performance optimization.
  • Implement and monitor backup and recovery solutions for virtual and physical environments.

Leadership & Collaboration

  • Lead infrastructure projects , including upgrades, migrations, and new deployments.
  • Mentor junior administrators and provide technical guidance to the IT team.
  • Coordinate with cross-functional teams to align infrastructure with business needs.
  • Develop and maintain documentation, SOPs, and disaster recovery plans .

Security & Compliance

  • Apply hardening standards for servers and network devices.
  • Monitor for vulnerabilities and implement remediation plans.
  • Ensure compliance with industry regulations and internal security policies .

Qualifications

Required

  • 5+ years of experience in systems administration with a focus on VMware and networking.
  • Strong knowledge of VMware vSphere, ESXi, vCenter , and virtualization best practices.
  • Proficiency in LAN/WAN technologies , TCP/IP, DNS, DHCP, VLANs, VPNs, and firewall configurations.
  • Experience with Windows Server and Linux administration .
  • Familiarity with backup solutions (Veeam, Commvault, or similar).
  • Proven leadership experience in managing projects or mentoring team members.
  • Strong troubleshooting and problem-solving skills.

Preferred

  • Certifications: VMware VCP , Microsoft Certified: Windows Server , CCNA/CCNP , or equivalent.
  • Experience with PowerShell scripting and automation.
  • Knowledge of cloud integration (Azure, AWS) and hybrid environments.
  • Exposure to ITIL practices and ITSM tools.

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