Senior Infrastructure Engineer

MMD Services; Houston (TX); Hybrid; USD 110,000 - 150,000; Full time

Job summary

MMD Services Inc. in Houston is seeking a Senior Infrastructure Engineer to own the health and performance of a large VMware vSphere/ESXi environment and to drive automation across Kubernetes, Docker, and Red Hat platforms powering AI workloads.

You will manage both Windows and Linux ecosystems, craft Ansible-driven provisioning, and maintain Active Directory, DNS, DHCP, and certificate services while collaborating with a global team on a hybrid schedule (three days onsite in Houston, two days

Qualifications

• 5+ years of enterprise infrastructure engineering experience.
• Deep hands-on expertise with VMware vSphere/ESXi.
• Practical experience with container technologies in production (Kubernetes & Docker).
• Strong automation experience with Ansible/Tower.

Responsibilities

• Own the health and performance of a VMware vSphere/ESXi platform as the infrastructure heartbeat.
• Engage with a modern tech stack including Kubernetes, Docker, and Red Hat container platforms for AI workloads.
• Maintain/triage large Windows and Linux environments, addressing authentication, access, and outages.
• Build and refine automation using Ansible playbooks to streamline provisioning and configuration at scale.
• Support Active Directory, DNS, DHCP, and Certificate Services across a multi-region environment.
• Assist with Azure IaaS operations (VMs, RBAC, backup, DR) as needed.
• Contribute to on-call rotations (every 8 weeks) and monthly maintenance windows.

Skills

VMware vSphere/ESXi

Kubernetes

Docker

Ansible automation

Windows Server 2016+

Linux (RHEL/Ubuntu)

Active Directory DNS/DHCP

PowerShell scripting

Tools

Kubernetes

Docker

Red Hat container platforms

Ansible Tower

Azure IaaS

SCOM/Zabbix/SCCM

Job description

We are partnering with a globally recognized, multi-billion dollar legal services organization that has built a reputation as a leader in their field for the Senior Infrastructure Engineer. With a worldwide footprint and thousands of employees across multiple continents, this company is making significant investments in modernizing their enterprise infrastructure, including hands‑on AI and automation initiatives that are actively in flight. Their on‑premises environment is the backbone of global operations, and this team is at the center of it all.

This is a rare opportunity to join a tenured, low‑turnover team where your contributions are visible, your growth is supported, and the technology stack is genuinely exciting.

Hybrid schedule - three days onsite in Houston, two days remote.

What You'll Be Doing:

• Own the health and performance of a sprawling VMware vSphere/ESXi virtualization platform, this is the heartbeat of the infrastructure and the primary focus of your day‑to‑day work
• Get hands‑on with a modern, evolving tech stack that includes Kubernetes, Docker, and Red Hat container platforms powering real AI workloads
• Keep a large‑scale Windows and Linux environment running smoothly, diagnosing everything from authentication failures and access issues to full system outages
• Build and maintain automation that actually reduces toil, writing and refining Ansible playbooks through Ansible Tower to streamline provisioning and configuration at scale
• Manage identify and access infrastructure including managing Active Directory, Group Policy, DNS, DHCP, and Certificate Services across a complex, multi‑region environment
• Keep the environment secure and compliant through proactive vulnerability remediation, patch management, and performance monitoring via enterprise tooling
• Play a supporting role in Azure IaaS operations VMs, RBAC, backup, and disaster recovery as a complement to the core on‑prem workload
• Step up during on‑call windows (rotating every 8 weeks) and monthly maintenance windows to keep global operations running without interruption

What You Bring:

• 5+ years of enterprise infrastructure engineering experience, ideally in environments running thousands of servers
• VMware vSphere/ESXi expertise is a must, you know this platform deeply and can troubleshoot, optimize, and scale it with confidence; Nutanix or Hyper-V familiarity is a bonus
• Solid Windows Server (2016+) chops and working knowledge of Linux (RHEL/Ubuntu) strong Windows engineers with a hunger to expand their Linux skills are welcome
• Practical experience with container technologies Kubernetes, Docker, and Red Hat, in live production environments
• Comfort with infrastructure automation you've written or worked extensively with Ansible playbooks and aren't afraid of the command line
• Strong Active Directory fundamentals across DNS, DHCP, Group Policy, and Certificate Services
• PowerShell scripting ability and familiarity with enterprise monitoring platforms like SCOM, Zabbix, and SCCM
• A working understanding of Azure IaaS enough to support and troubleshoot, not necessarily architect
• A collaborative, professional presence this is a tight‑knit global team and communication matters
• Adaptability and a growth mindset this environment moves fast and rewards engineers who are curious and coachable
• Degree optional what you've built and supported matters far 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.