> Markdown version of [/jobs/ext/575595-sr-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/575595-sr-infrastructure-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Infrastructure Engineer - **Company:** MMD Services - **Location:** Chicago, IL, United States - **Experience:** Expert - **Salary:** $125,000.0 - $145,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Access, Microsoft Windows, Active Directory, Artificial Intelligence, Microsoft Azure, Backup Devices, Ubuntu (Operating System), Command-Line Interface, Cloud Engineering, Configuration Management, Program Optimization, Data Centers, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, Distributed Systems, Domain Name System (DNS), VMware ESX Servers, Monitoring of Systems, Hyper-V, System Center Operations Management, System Center Configuration Manager, Windows Servers, Network Service, Windows PowerShell, Role-Based Access Control, Red Hat Enterprise Linux, Ansible, Software Deployment, VMware Virtualization, VMware VSphere, Software Vulnerability Management, Zabbix, Containerization, Selinux, Kubernetes, Performance Monitor, Patch Management, Nutanix, Network Server, Ansible Tower, Cisco, Docker, User Administration - **Published:** June 21, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=5d12c6c2b6b1013d ## About the Role Do you have experience in System performance monitoring?, * 5+ years of enterprise infrastructure engineering experience, ideally in environments running thousands of servers. * Deep, hands-on VMware vSphere/ESXi expertise; you know this platform and can troubleshoot, optimize, and scale it with confidence. This is the cornerstone of the role. * Solid Windows Server (2016+) experience required. * Linux (RHEL/Ubuntu) fundamentals required. You must be comfortable at the command line: navigation, user management, permissions, disk, services, and SELinux. * Working knowledge of DRS, HA, distributed vs. standard switches, and vMotion in production environments. * Practical experience with container technologies (Kubernetes, Docker, and Red Hat) in live production environments. * Hands-on Ansible experience: writing and working with playbooks, not just running them. * Strong Active Directory fundamentals across DNS, DHCP, Group Policy, and Certificate Services. * PowerShell scripting ability and familiarity with enterprise monitoring platforms such as SCOM, Zabbix, and SCCM. * 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. Preferred: * Cisco UCS platform experience (B-Series or C-Series) - this is a real data center environment with physical hardware. * Hyper-V or Nutanix familiarity. * Working understanding of Azure IaaS - enough to support and troubleshoot, not necessarily architect. * Degree optional - what you've built and supported matters far more than where you studied. ## Description As a Senior Infrastructure Engineer, VMware vSphere/ESXi will be the heartbeat of your day-to-day work. You'll own the health, performance, and scalability of a large-scale virtualization platform while also contributing across a modern, evolving stack that includes Kubernetes, Docker, Red Hat, Ansible automation, Active Directory, and Azure IaaS. On-call rotation runs every 8 weeks, with monthly maintenance windows typically after hours or on weekends. One thing that sets this role apart: you need to be genuinely strong in both Windows and Linux. This environment runs a large-scale mixed OS footprint, and you'll be expected to diagnose and resolve issues across both platforms with equal confidence. On the Windows side, that means Windows Server (2016+), Active Directory, Group Policy, and PowerShell. On the Linux side, you need to be comfortable at the command line including RHEL/Ubuntu, user management, permissions, disk, services, and SELinux. Candidates who are Windows-only or Linux-only will not be the right fit for this team. VMWare & Virtualization (Primary Focus) * Own the health, performance, and scalability of a sprawling VMware vSphere/ESXi virtualization platform - this is where you'll spend the majority of your time. * Troubleshoot host failures, DRS/HA events, and distributed vs. standard switch configurations with confidence and speed. * Support vMotion operations and contribute to capacity planning and platform optimization across the virtualization layer. Containers & AI Workloads * Get hands-on with a modern, evolving tech stack that includes Kubernetes, Docker, and Red Hat container platforms powering real AI workloads. * Support containerized environments in production and contribute to the infrastructure underpinning active automation and AI initiatives. Windows and Linux Systems * Keep a large-scale Windows and Linux environment running smoothly, diagnosing everything from authentication failures and access issues to full system outages. * Manage Windows Server (2016+) environments and support RHEL/Ubuntu systems at the command line - including user management, permissions, disk, services, and SELinux. Automation & Configuration Management * Build and maintain automation that actually reduces toil - writing and refining Ansible playbooks through Ansible Tower to streamline provisioning and configuration at scale. * Leverage PowerShell scripting for task automation and operational efficiency across the Windows environment. Identity, Access and Network Services * Manage identity and access infrastructure including Active Directory, Group Policy, DNS, DHCP, and Certificate Services across a complex, multi-region environment. * Maintain security and compliance through proactive vulnerability remediation, patch management, and performance monitoring. Enterprise Tooling & Monitoring * Use enterprise tooling including SCCM for software deployment and change management, and SCOM for infrastructure monitoring to keep the environment healthy and compliant. * Leverage Zabbix and other monitoring platforms to maintain visibility across a large, distributed infrastructure. Azure & Cloud Support * Play a supporting role in Azure IaaS operations (VMs, RBAC, backup, and disaster recovery) as a complement to the core on-prem workload. On-Call & Maintenance * Step up during on-call windows (rotating every 8 weeks) and monthly maintenance windows to keep global operations running without interruption. * Most changes happen after hours or on weekends - this is a global environment and uptime is non-negotiable. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [What Makes WeAreDevelopers World Congress Different From Every Other Tech Event?](https://www.wearedevelopers.com/magazine/701-what-makes-wearedevelopers-world-congress-different-from-every-other-tech-event)