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Senior Systems Engineer Windows/Linux & Virtualization Position Overview This role offers an opportunity to support enterprise infrastructure operations across server environments, virtualization platforms, and end-user computing. The position combines advanced L3 compute troubleshooting with hands-on onsite desktop support, requiring a well-rounded infrastructure professional who can address server availability, performance, virtualization, and endpoint issues. The ideal candidate brings strong Windows Server or Linux expertise, enterprise virtualization experience, and the ability to support both infrastructure operations and end users. What You'll Do / Key Responsibilities Provide L3 troubleshooting for Windows and/or Linux server availability, performance, services, event logs, access dependencies, resource utilization, and recovery within approved procedures. Support VMware vSphere, Hyper-V, Citrix, or equivalent virtualized compute technologies; investigate guest/host resource and service issues with platform owners. Deliver L2/L3 onsite desktop support for PCs, laptops, printers, peripherals, Windows endpoint issues, logins, productivity applications, and user connectivity. Troubleshoot Active Directory, Group Policy, identity, and Microsoft 365 sign-in/collaboration dependencies, coordinating approved access changes with relevant owners. Review monitoring alerts for server and endpoint availability; isolate root causes, prioritize P1/P2 incidents, and support incident restoration and RCA evidence. Coordinate on storage, backup, cloud, network, telecom, and application dependencies without assuming excluded service ownership. Execute authorized operational changes, maintain runbooks and asset/configuration records, coach offshore counterparts, and participate in the onsite on-call rotation. Required Qualifications 7+ years of Systems Engineering / Compute Operations experience. Deep Windows Server or Linux troubleshooting expertise and familiarity with the other platform. Practical experience with enterprise virtualization, directory services, server monitoring, and incident-driven troubleshooting. Strong enterprise desktop / end-user support ability, beyond datacenter administration. Strong communication skills and ability to interact effectively with users. Ability to cover rotational on-call requirements. Preferred Qualifications Microsoft, RHCSA/RHCE, VMware, Azure/AWS, or equivalent technical certifications. Experience with Microsoft 365 / Entra ID. Experience with SolarWinds or other monitoring tools. Experience with ITSM tooling. Experience in regulated or healthcare-adjacent IT operations. What Makes HTC A Great Place To Build Your Future HTC Global Services wants you to join our team. Come build new things with us and advance your career. At HTC Global, you ll collaborate with experts, work alongside clients, and be part of high-performing teams driving success together. You ll have long-term opportunities to grow your career and develop skills in the latest emerging technologies. At HTC Global Services, our employees have access to a comprehensive benefits package. Benefits can include Group Health (Medical, Dental, and Vision), Paid Time Off, Paid Holidays, 401(k) matching, Group Life and Disability insurance, Professional Development opportunities, Wellness programs, and a variety of other perks. Our success as a company is built on inclusion and diversity. HTC Global Services is committed to providing a workplace free from discrimination and harassment, where every employee is treated with dignity and respect. We celebrate differences and believe that diverse cultures, perspectives, and skills drive innovation and success. HTC is an Equal Opportunity Employer and a proud National Minority Supplier. We seek to empower each individual, fostering an environment where everyone feels valued, included, and respected. #LI-Onsite #SeniorSystemsEngineer #ComputeEngineer #InfrastructureEngineer #ComputeInfrastructure #L3Support #SystemsSupport #ServerSupport #ServerInfrastructure #VMware #VMwarevSphere #Citrix #WindowsServer #Linux #AWS #Azure #Google Cloud Platform #CloudInfrastructure #Virtualization #InfrastructureOperations #InfrastructureMonitoring #SolarWinds #HybridInfrastructure #CloudMigration #ITOperations #SystemsEngineering #CriticalInfrastructure #PerformanceMonitoring #RootCauseAnalysis #IncidentManagement #InfrastructureReliability #EnterpriseInfrastructure