Senior System Engineer

Location: Westmont, IL 60559 Onsite | Permanent, full-time direct hire

Salary: $150 - 165K + Benefits

Overview of Responsibilities: Design, configure, document, and troubleshoot secure on-prem networks, including air-gapped environments. Work with routers, switches, firewalls, segmentation, and redundant network paths. Build and support Proxmox and bare-metal Linux and Windows Server environments. Help transition workloads from VMware to Proxmox and verify availability and recovery. Support Active Directory, Group Policy, Microsoft Entra ID, Microsoft 365, Azure, and Intune. Integrate third-party applications using SAML.Automate provisioning and configuration with tools such as Bash, PowerShell, or Ansible. Support connected devices such as cameras and sensors, assist with vulnerability remediation, and maintain network diagrams, runbooks, and operating procedures.

QUALIFICATIONS: Approximately 10-15+ years of hands-on systems or infrastructure engineering experience, including Linux and Windows Server administration. Experience designing and implementing networks, including routing, switching, firewalls, segmentation, and failover. Experience building and supporting on-prem virtualization. Proxmox is central to the environment. VMware/vSphere, Hyper-V, KVM, and Docker experience are also relevant. Hands-on experience with Active Directory, Microsoft Entra ID, and Microsoft 365.A related bachelor’s degree or equivalent hands-on experience. Experience with SAN/NAS, regulated infrastructure, or isolated networks is valuable. CCIE is desired May involve up to 20% travel. Due to the nature of the work, this requires U.S. citizenship, a REAL ID-compliant ID, and successful completion of a background investigation and drug screening as employment requirements. Qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or genetic information.