Job Title: Sr Systems Administrator (NEI-18) Location: Bethesda, MD CyberData Technologies is seeking a Senior Systems Administrator with a strong background in Windows Server administration, vulnerability mitigation, and cloud migration. The ideal candidate will have hands-on experience with VMware environments, including ESXi host patching, and working knowledge of Nutanix hyperconverged infrastructure. Familiarity with Azure VMware Solution (AVS) is also required. This role demands a proactive problem solver capable of managing both operational and project-based tasks across hybrid infrastructure environments. Responsibilities: • Perform regular Windows Server patching across production and non-production environments. • Identify, assess, and remediate Windows Server vulnerabilities in alignment with organizational security standards and industry best practices. • Patch and maintain VMware ESXi hosts to ensure platform stability and security. • Manage and optimize virtual infrastructure running on Nutanix, including capacity planning, health monitoring, and performance tuning. • Collaborate with security teams to implement and validate mitigations for discovered vulnerabilities. • Troubleshoot and resolve issues related to Windows servers and hosted applications. • Maintain and optimize VMware infrastructure in on-premises environments. • Support planning and execution of on-premises to cloud migration projects. • Collaborate with cross-functional teams to assess application dependencies and performance requirements during cloud migration. • Ensure compliance with internal security and operational standards during system changes. • Monitor and report system performance and security posture; implement improvements as needed. • Manage workloads using Azure VMware Solution (AVS) for hybrid and cloud environments. Required Qualifications: • Proven experience with Windows Server patching, hardening, and vulnerability mitigation. • Strong troubleshooting skills with Windows servers and hosted applications. • Hands-on experience with VMware virtualization technologies, including vCenter and ESXi. • Experience patching and managing VMware ESXi hosts in production environments. • Experience with Nutanix infrastructure in an enterprise or production setting. • Demonstrated involvement in on-premises to cloud migration projects. • Familiarity with Azure VMware Solution (AVS). • Solid understanding of system security principles and best practices. • Strong documentation and communication skills. • Ability to work independently and manage multiple priorities in a fast-paced environment. Preferred Qualifications: • Relevant certifications such as MCSA, MCSE, VCP, Nutanix Certified Professional (NCP), or Azure certifications. • Experience in enterprise-scale infrastructure projects. • Familiarity with patch management automation tools and vulnerability scanning platforms (e.g., Tenable). • Knowledge of infrastructure monitoring tools. • Understanding of ITIL practices and change management. +