Virtualization Systems Engineer (Active Top Secret Clearance)

Great Hill Solutions, LLCis part of the Seneca Nation Group (SNG) portfolio of companies. SNG is the federal government contracting business wholly owned by the Seneca Nation. SNG meets mission-critical needs of federal civilian, defense, and intelligence community customers across a variety of domains. The SNG portfolio receives shared services support from its parent company Seneca Holdings and is comprised of multiple companies that participate in the Small Business Administration 8(a) program. To learn more visit www.senecanationgroup.com and follow us on LinkedIn.

At Seneca, our team of talented individuals is what makes us successful. To support our team, we provide a balanced mix of benefits and programs.Your total rewards package includes competitive pay, benefits, and perks, flexible work-life balance, professional development opportunities, and performance and recognition programs. We offer a comprehensive benefits package that includes medical, dental, vision, life, and disability, voluntary benefit programs (critical illness, hospital, and accident), health savings and flexible spending accounts, and retirement 401K plan. One of our fundamental principles at Seneca Holdings is to offer competitive health and welfare benefits to our team members, providing coverage and care for you and your family. Full-time employees working at least 30 hours a week on a regular basis are eligible to participate in our benefits and paid leave programs. We pride ourselves on our collaborative work environment and culture, which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation.

Great Hill is seeking a highly skilled and self-driven Virtualization Systems Engineerto support large-scale enterprise datacenters encompassing over 3,000 virtual machines. The ideal candidate will be responsible for designing, implementing, maintaining, and troubleshooting a VMware-based infrastructure and associated storage systems in a government environment. This position requires deep expertise in virtualization technologies and a strong commitment to supporting mission-critical systems. This position also places strong emphasis onproactive monitoring, compliance and automation to ensure performance, availability, and security across classified and unclassified enclaves.

Roles and Responsibilities include, but are not limited to:

* Design and architect secure VMware vSphere environments leveraging converged and hyperconverged platforms (e.g., VxRail)
* Deploy, operate, and maintain virtual infrastructure and network virtualization (NSX-T)
* Manage and monitor performance, capacity, and availability using VMware Aria Operations (formerly vRealize), vCenter alerts, and third-party tools
* Maintain compliance with DoD STIGs and Zero Trust principles across all virtual platforms
* Implement and manage VM lifecycle, including provisioning, backups, replication, and decommissioning
* Ensure environment observability and health with proactive alerting and trend analysis
* Lead root cause analysis for incidents and develop preventive measures
* Document and maintain logical and physical diagrams, SOPs, and system baselines
* Collaborate with cross-functional teams (network, security, cloud) to deliver integrated solutions
* Manage infrastructure patching, hardening, and firmware updates in coordination with cybersecurity requirements
* Develop future-state roadmaps for virtualization modernization, including automation and cloud integration
* Support on-call rotation for 24/7 mission-critical operations

Basic Qualifications:

* 5-7 years of hands-on experience with VMware vSphere 7.x or 8.x, including vCenter, ESXi, and vSAN
* Strong understanding of Dell Power EDGE and Cisco M220, including HCI architecture, deployment, and troubleshooting
* Experience with VM monitoring platforms (e.g., Aria Operations, SolarWinds, Zabbix, Dynatrace, or similar)
* Strong grasp of P2V migrations, snapshot and backup strategies, and disaster recovery planning
* Familiarity with DoD STIGs and infrastructure hardening practices
* Experience in large-scale datacenter operations and virtualization performance tuning
* Active DoD Top Secret clearance (or Secret with ability to upgrade)
* Working knowledge of Layer 2/3 networking (Cisco), VLANs, vSwitches, and NSX

Desired Skills:

* VMware Certified Professional (VCP) or higher
* Experience with VMware Aria Suite (Operations, Automation)
* Knowledge of Nutanix or Red Hat Virtualization
* Hands-on scripting experience using PowerShell, PowerCLI, or Ansible
* Familiarity with hybrid cloud models, especially VMware Cloud on AWS or Azure VMware Solution