Requisition Summary: PACCAR is seeking a highly motivated and experienced Server Administrator 3 to oversee, maintain, and optimize our enterprise server infrastructure. In this critical role, you will lead the day-to-day administration and strategic direction of a hybrid infrastructure encompassing Windows, Redhat Linux, VMware, AWS, and Azure cloud environments. You will champion system performance, disaster recovery planning, robust backup strategies utilizing Rubrik, and enterprise storage management via EMC SAN. Beyond virtual and operating system administration, this role ensures the operational integrity of our physical server room facilities-overseeing HVAC, fire suppression, UPS/battery backups, and NVR security systems. As a technical leader, you will drive audit compliance, execute complex system updates, recommend equipment upgrades, and provide high-level technical guidance to end-users. The ideal candidate is a proactive self-starter with a strong foundation in Microsoft and Linux ecosystems, capable of managing changing priorities in a dynamic, 24/7 high-availability environment. Job Functions / Responsibilities • Set up, configure, and support Windows Servers • Set up, configure, and support VMware, AWS and Azure Virtual Servers • Monitor and tune systems to ensure a high level of performance • Oversee and apply updates/patches • Maintain Active Directory and file/folder permissions • Create and maintain a disaster recovery plan • Maintain backups of systems and critical data • Recommend upgrades and new equipment • Create and maintain detailed documents • Provide technical support and guidance to end users • Complete daily operating system health checks • Support scheduled after-hours maintenance • Ability to be on call for 24/7 support • Highly motivated, self-starter, able to work independently, multi-task, respond to changing priorities and initiative to own specific tasks • Ensure compliance with audit standards by maintaining accurate documentation, implementing required controls, and supporting regular audit reviews. • Oversee the operational integrity of server room infrastructure, including HVAC systems, fire suppression equipment, UPS/back up batteries, and environmental monitoring to ensure optimal performance and equipment protection. • Set up and maintain NVR systems, including camera integration, storage management, and updates. Qualifications Required: • Minimum of five years' experience with Windows Server (2019, 2022 and 2025) • Minimum of five years' experience with Redhat Linux • In-depth knowledge of installing, troubleshooting, and administering Windows Servers • Knowledge of installing, troubleshooting, and administering Redhat Linux Server • Proven experience with VMware vSphere • Proven experience with EMC SAN Storage • Proven experience with Rubrik Backup Solutions • Proven experience with IIS and failover clustering • Knowledge of Cisco networking devices • Knowledge of Internet Information Services • Knowledge of Mainframe and Warehouse Control Systems • Strong documentation, organizational, and administration skills • Strong oral and written communication skills • Experience with SQL server considered a plus • Experience with SharePoint considered a plus • Experience with AWS/ Azure Cloud solutions Must meet physical requirements of the position with or without accommodation. Education/Training: Bachelor's degree in Information Technology or related field required. MCSA / CompTIA Server+ or equivalent certification preferred.