Sr. Systems Administrator

We are one of the nations leading providers of industrial solutions serving as the single-source for our clients custom shell and tube heat transfer equipment. Our fully integrated shop services include state-of-the-art technologies engineering design manufacturing fabrication maintenance and repair.

Ohmstede Ltd is looking for a Senior Infrastructure & Systems Administrator to serve as the senior technical owner for Ohmstedes infrastructure environment including servers virtualization hyperconverged infrastructure networking endpoint management backups disaster recovery and core technology operations. This role is responsible for maintaining secure reliable and scalable technology services across company locations while supporting business operations compliance requirements and operational continuity.

This position is a hands-on infrastructure and systems administration role that provides advanced technical support manages infrastructure projects coordinates vendors supports cybersecurity and vulnerability remediation efforts and maintains documented standards runbooks and recovery procedures. The role also serves as a senior escalation resource for complex infrastructure network security and systems issues.

• Administer and maintain physical and virtual server environments.
• Manage VMware ESXi vSphere and Dell VxRail infrastructure across all 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.
• Identify backup storage virtualization and infrastructure risks and recommend improvements.

• Administer wired wireless LAN WAN and SD-WAN infrastructure across all sites.
• Manage Meraki switches firewalls wireless access points VLANs and network connectivity.
• Support VMware VeloCloud SD-WAN environments and site-to-site connectivity.
• Troubleshoot network performance latency routing and connectivity issues.
• Coordinate network installations data drops cabling projects telecommunications vendors and service providers.
• Maintain network standards diagrams documentation and best practices.

• Serve as a primary technical owner for infrastructure and endpoint security controls.
• Monitor prioritize and remediate vulnerabilities CVEs and security findings.
• Administer and review security platforms such as endpoint protection Cortex Forescout Intune and related tools.
• Support EMCOR security standards corporate policy requirements audits and compliance initiatives.
• Participate in incident response risk remediation access control and security improvement activities.
• Support software licensing compliance and technology asset accountability.

• Administer Microsoft Intune and endpoint management solutions.
• Manage workstation compliance software deployment device configuration and endpoint lifecycle standards.
• Maintain accurate inventory of computers tablets servers printers network equipment and related technology assets.
• Support hardware refresh planning equipment replacement and technology lifecycle management.
• Support copier configuration address book management mobile device administration backup and physical security technology such as camera systems as assigned.

• Serve as a Level 2 and Level 3 escalation point for complex infrastructure systems network endpoint and security issues.
• Assist with Level 1 support activities during staffing shortages or business-critical events.
• Research and resolve technical issues affecting business operations.
• Develop technical requirements obtain quotes and coordinate infrastructure-related purchasing and ordering.
• Manage relationships with infrastructure vendors hardware manufacturers telecommunications providers and support partners.
• Support change management processes planned maintenance software upgrades and infrastructure project execution.

• Create and maintain infrastructure runbooks network diagrams configuration standards support procedures and recovery documentation.
• Document backup and restore processes VMware/VxRail environments network responsibilities endpoint management procedures and security tool ownership.
• Maintain ownership documentation for infrastructure systems including primary owner backup owner documentation status risk level and vendor support availability.
• Cross-train IT team members to reduce single-person dependency and improve backup coverage.
• Identify operational gaps infrastructure risks and training needs and recommend improvements to IT leadership.

• 5 years of progressively responsible systems administration infrastructure administration or equivalent enterprise IT experience.
• Strong experience with Microsoft Windows Server Active Directory Group Policy DNS DHCP and related infrastructure technologies.
• Experience administering VMware virtualization environments; experience with VxRail or hyperconverged infrastructure strongly preferred.
• Strong networking knowledge including TCP/IP switching wireless networking VLANs VPNs firewalls WAN and SD-WAN concepts.
• Experience with enterprise backup and recovery platforms restore testing and disaster recovery documentation.
• Experience with Microsoft 365 Azure/Entra ID Intune endpoint management and device compliance.
• Strong troubleshooting documentation project execution and vendor coordination skills.
• Ability to manage multiple priorities work independently and communicate effectively with technical and non-technical stakeholders.

• VMware Microsoft Meraki cybersecurity or infrastructure-related certifications.
• Experience with Dell VxRail Cohesity Meraki VMware VeloCloud Cortex Forescout and Microsoft Intune.
• Experience supporting manufacturing industrial or multi-site business environments.
• Experience supporting cybersecurity vulnerability management security remediation and compliance programs.
• Experience with SQL Server administration storage health and infrastructure capacity planning.

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