Senior Infrastructure & Security Systems Admin

Ohmstede Ltd.; Beaumont (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

Ohmstede Ltd is seeking a Senior Infrastructure & Systems Administrator to lead the infrastructure environment across all company locations, including servers, virtualization, networking, backups, and security operations.

The role focuses on hands-on administration, vendor coordination, and ensuring secure, reliable technology services that support business operations, compliance, and continuity.

Qualifications

• 5+ years of progressively responsible systems administration, infrastructure administration, or equivalent enterprise IT experience.

Responsibilities

• Administer and maintain physical and virtual server environments.
• Manage VMware ESXi, vSphere, and Dell VxRail infrastructure across locations.
• Perform server installation, configuration, patching, upgrades, and lifecycle management.
• Administer Windows Server, Active Directory, Group Policy, DNS, DHCP, and related core services.
• Support SQL Server maintenance, availability, and operational health.
• Monitor infrastructure performance, capacity, utilization, and availability.
• Manage infrastructure modernization and hardware refresh initiatives.
• Administer and support Cohesity backup and recovery platforms.
• Monitor backup operations, resolve backup failures, and report backup health.
• Perform regular restore testing, recovery validation, and disaster recovery readiness activities.
• Maintain documented backup, restore, disaster recovery, and business continuity procedures.

Skills

Infrastructure expertise

Troubleshooting

Documentation

Vendor coordination

Project execution

Effective communication

Tools

VMware vSphere

Dell VxRail

Meraki

Cohesity

Intune

Cortex

Forescout

Microsoft 365 / Azure

Job description

Ohmstede Ltd is seeking a Senior Infrastructure & Systems Administrator to lead the infrastructure environment across all company locations, including servers, virtualization, networking, backups, and security operations.

The role focuses on hands-on administration, vendor coordination, and ensuring secure, reliable technology services that support business operations, compliance, and continuity.