HTC Global Services · 1 week ago
Server Admin - Lead L3
Brooklyn, NY
Full-time
Onsite
Senior Level, Lead/Staff
13+ years expHTC Global Services is seeking a senior technical authority to serve as an L3 Infrastructure Engineer responsible for designing, optimizing, and maintaining enterprise-scale Windows Server and VMware environments. The role involves deep problem diagnosis, performance optimization, and automation to ensure high availability, security, and efficiency across infrastructure services.
Information TechnologyInsuranceSoftware
Responsibilities
Lead the configuration, optimization, and lifecycle management of Windows Server (2016/2019/2022) environments, including AD, DNS, DHCP, and core infrastructure services
Design, implement, and troubleshoot VMware vSphere/ESXi clusters, including HA/DRS configuration, vMotion, resource pools, templates, and performance tuning
Act as final escalation point for critical infrastructure issues; perform root cause analysis (RCA) and implement permanent fixes and preventive measures
Develop and maintain PowerShell or Python-based automation scripts for server provisioning, patching, monitoring, and compliance reporting
Conduct capacity planning, performance benchmarking, and trend analysis to ensure optimal resource utilization and scalability
Implement and maintain security baselines, hardening standards, and patch compliance in accordance with organization policies and industry best practices
Contribute to the migration and modernization of workloads, including hybrid cloud integration, VMware upgrades, and backup/recovery strategy enhancements
Partner with storage, network, and application teams for complex troubleshooting; review and enhance SOPs, technical runbooks, and knowledge articles
Provide technical guidance to L1/L2 teams, review their work, and drive continuous service improvement initiatives
Qualification
Required
Expert-level knowledge of Windows Server administration, Active Directory, Group Policy, and DNS/DHCP/IIS
O365 (Microsoft 365) Administration experience including (Microsoft Team, SharePoint, Exchange Online, OneDrive)
Certificate Authority experience and Third-party certificate entities
Deep understanding of VMware vSphere, vCenter, HA/DRS clusters, and virtual networking/storage
Dell VxRail, Dell Recover Points experience
Deep understanding of MobileIron MDM
Strong scripting and automation experience using PowerShell or Python
Proven experience in RCA, performance tuning, and capacity planning
Familiarity with configuration management tools (e.g., Ansible, SCCM, or similar)
Working knowledge of backup/restore technologies (Veeam, Commvault, Networker) and endpoint protection solutions
Exposure to cloud/hybrid integration (Azure/VMware Cloud) is an advantage
Ability to lift > 50 lbs
Experience: 13–15 years in infrastructure support/engineering, with at least 3–4 years in an L3 or equivalent senior technical role
Preferred
Microsoft Certified: Windows Server Hybrid Administrator Associate
VMware Certified Professional – Data Center Virtualization (VCP-DCV)
ITIL v4 Foundation
Azure Administrator Associate (optional)
Strong analytical and problem-solving mindset
Ability to lead technical bridges and manage high-severity incidents
Excellent communication and documentation skills
Proactive and drives automation and efficiency
Benefits
Group Health (Medical, Dental, and Vision)
Paid Time Off
Paid Holidays
401(k) matching
Group Life and Disability insurance
Professional Development opportunities
Wellness programs
A variety of other perks
Company
HTC Global Services
HTC Global Services Inc., is a global provider of Information Technology and Business Process Services and Solutions.
10001+ employees
H1B Sponsorship
HTC Global Services has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (361)
2024 (367)
2023 (440)
2022 (314)
2021 (227)
2020 (438)
Funding
Current Stage
Late StageTotal Funding
$1.2MKey Investors
Michigan Economic Development Corporation
2024-12-10Grant· $1.2M
Leadership Team
Gunasekaran Nadar
CHIEF FINANCIAL OFFICER
Girish Arora
Vice President, Financial Services and Insurance
Recent News
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