Senior Infrastructure Engineer, Server & Virtualization

MMD Services; New York (NY); Hybrid; USD 120,000 - 170,000; Full time

Job summary

MMD Services Inc. is seeking a Sr. IT Engineer focused on infrastructure and virtualization to join a large, global on-prem footprint with modernization initiatives.

The role requires strong Windows and Linux expertise, hands-on VMware, container platforms, and automation skills. Hybrid onsite with periodic on-call obligations and after-hours windows. The ideal candidate will navigate a multi-region environment, support Azure IaaS in tandem with on-prem workloads, and drive automation to reduce

Qualifications

• 5+ years of enterprise infrastructure engineering experience
• Hands-on VMware vSphere/ESXi expertise for troubleshooting and scaling
• Strong Windows Server (2016+) and Linux (RHEL/Ubuntu) fundamentals
• Experience with DRS/HA and vMotion in production environments
• Production experience with Kubernetes, Docker, and Red Hat container technologies
• Hands-on Ansible playbooks and automation
• Strong AD (DNS, DHCP, Group Policy, Certificate Services)
• PowerShell scripting and familiarity with enterprise monitoring tools (SCOM, SCCM, Zabbix)

Responsibilities

• Own a sprawling VMware vSphere/ESXi platform including troubleshooting and capacity planning
• Support Kubernetes, Docker, and Red Hat container platforms in production AI workloads
• Maintain a large Windows and Linux environment with active AD, DNS, DHCP, and policies
• Build automation with Ansible Tower and PowerShell scripting
• Manage identity and network services across a multi-region setup
• Maintain security and visibility via patching and vulnerability remediation with SCCM/SCOM/Zabbix
• Support Azure IaaS operations alongside on-prem workload
• Participate in on-call rotations and after-hours maintenance windows

Skills

VMware vSphere/ESXi

Windows & Linux administration

PowerShell scripting

Ansible

Kubernetes

Docker

Active Directory fundamentals

Security patching & monitoring

Tools

Ansible Tower

SCCM

SCOM

Zabbix

Linux command line

Job description

Our client is looking to bring on a Sr. IT Engineer, focused on infrastructure and virtualization. This is a rare chance to join a tenured, low-turnover infrastructure team at a globally recognized, multi-billion dollar organization with thousands of employees across multiple continents. Their on-prem environment is the backbone of global operations and this team is at the center of it, with serious modernization investments and hands-on AI and automation initiatives actively in flight. Engineers who thrive here are intellectually curious, leave ego at the door, and are energized by complexity.

This team sits onsite in their downtown office, 3 days a week in the office. This person must be willing to do a hybrid schedule along with committing to an on-call rotation every 8 weeks (monthly maintenance windows are typically after hours or weekends).

***One thing that sets this role apart: You'll need real, hands-on comfort in both Windows and Linux environments - this isn't a role where you can lean on one and avoid the other. This is a large mixed-OS footprint, and you'll diagnose issues across both platforms with equal confidence. Windows-only or Linux-only candidates will not be the right fit.***

What You'll Do

• Own a sprawling VMware vSphere/ESXi platform; troubleshooting host failures, DRS/HA events, and switch configurations; supporting vMotion, capacity planning, and optimization.
• Support Kubernetes, Docker, and Red Hat container platforms powering real AI workloads in production
• Keep a large Windows and Linux environment healthy; Windows Server (2016+), AD, Group Policy, and PowerShell on one side; RHEL/Ubuntu command-line work (users, permissions, disk, services, SELinux) on the other
• Build automation that reduces real toil; Ansible playbooks through Ansible Tower, plus PowerShell scripting
• Manage identity and network services: Active Directory, Group Policy, DNS, DHCP, and Certificate Services across a multi-region environment
• Maintain security and visibility through patching, vulnerability remediation, and enterprise tooling (SCCM, SCOM, Zabbix)
• Support Azure IaaS operations (VMs, RBAC, backup/DR) as a complement to the core on-prem workload
• Participate in on-call and after-hours maintenance windows - this is a global environment and uptime is non-negotiable

Required

• 5+ years of enterprise infrastructure engineering, ideally in environments running thousands of servers
• Deep, hands-on VMware vSphere/ESXi expertise - troubleshooting, optimizing, and scaling with confidence. This is the cornerstone of the role.
• Solid Windows Server (2016+) experience and Linux (RHEL/Ubuntu) command-line fundamentals - BOTH REQUIRED
• Working knowledge of DRS, HA, distributed vs. standard switches, and vMotion in production
• Production experience with Kubernetes, Docker, and Red Hat container technologies
• Hands-on Ansible experience including writing playbooks, not just running them
• Strong AD fundamentals across DNS, DHCP, Group Policy, and Certificate Services
• PowerShell scripting and familiarity with enterprise monitoring (SCOM, Zabbix, SCCM)

Preferred

• Cisco UCS (B- or C-Series); this is a real data center with physical hardware
• Hyper-V or Nutanix familiarity
• Working Azure IaaS understanding; enough to support and troubleshoot, not architect
• Degree optional; what you've built matters more than where you studied

MMD Services Inc. is an equal opportunity employer. All applicants are considered for all positions without regard to race, religion, color, sex, gender, sexual orientation, pregnancy, age, national origin, ancestry, physical/mental disability, medical condition, military/veteran status, genetic information, marital status, ethnicity, alienage or any other protected classification, in accordance with applicable federal, state, and local laws.