Responsibilities

The Senior IT Systems Engineer builds, improves, and sustains classified infrastructure supporting engineering work. The role covers compute, virtualization, storage, networking, identity, endpoints, and security tooling in standalone and air-gapped environments.
This is a hands-on senior individual contributor position. Responsibilities include racking and imaging hardware, building and hardening systems, automating repeatable work, troubleshooting difficult issues, and helping establish technical standards across sites. The engineer must be comfortable working independently, shifting across infrastructure disciplines when needed, and owning work from design through testing, documentation, and support.
Build and operate classified infrastructure
Deploy, configure, and sustain Windows Server and Red Hat Enterprise Linux systems, virtualization clusters, enterprise storage, and core infrastructure services in standalone and air-gapped enclaves.
Build and support VMware, Nutanix AHV/Prism, or similar virtualization environments. Nutanix experience is preferred.
Support high-density compute for AI/ML, simulation, and engineering workloads, including GPU node provisioning, performance troubleshooting, capacity planning, and coordination with facilities on rack space, power, and cooling.
Administer and support Active Directory, DNS, DHCP, Group Policy, PKI, certificate services, privileged access, and role-based access for isolated forests with no connection to corporate IT.
Build and maintain golden images and hardened baselines for servers, workstations, virtual desktops, and supporting infrastructure.
Manage patching, updates, software packages, and security content in disconnected environments through approved transfer and validation processes.
Administer backup, recovery, and continuity capabilities. Perform scheduled restore testing and document results and corrective actions.
Design, configure, and troubleshoot managed switching, VLANs, firewall rules, network segmentation, and approved network connections between facilities. Coordinate with network and security teams to maintain secure, supportable network standards.
Automate and standardize

Qualification

Experience with VMwareExperience with enterprise storageExperience with managed switchingExperience applying DISA STIGsExperience operating in disconnectedAbility to document work clearlyNutanix AHVGPU serverElasticDisconnected WSUSData-center buildouts

Required

Strong hands-on experience with Windows Server, Active Directory, Group Policy, DNS, DHCP, PKI, and enterprise endpoint management.
Experience administering Red Hat Enterprise Linux or similar enterprise Linux systems.
Experience with VMware, Nutanix, Hyper-V, or similar enterprise virtualization platforms. Nutanix AHV/Prism experience is preferred.
Experience with enterprise storage, backup/recovery, and capacity planning.
Experience with managed switching, VLANs, firewall administration, network segmentation, and troubleshooting network connectivity.
Experience with PowerShell and infrastructure automation. Experience with Ansible, Python, Terraform, or similar tools is a plus.
Experience applying DISA STIGs, using SCAP/STIG Viewer, supporting ACAS/Nessus findings, and working in RMF, NIST SP 800-53, JSIG, or similarly regulated environments.
Experience operating in disconnected, air-gapped, classified, or highly controlled environments.
Ability to document work clearly, follow change control, validate results, and build systems that are easy for others to support.
Ability to work independently in a fast-moving environment, shift between infrastructure disciplines when needed, and make sound technical decisions without requiring detailed direction.

Preferred

Nutanix AHV, Prism Central, Files, Flow, or cluster lifecycle management.
GPU server, AI/ML, simulation, VDI, or high-performance compute infrastructure.
Elastic, Splunk, or other centralized logging and SIEM platforms.
Disconnected WSUS, offline patching, software-repository management, or approved media-transfer workflows.
Data-center buildouts, rack-and-stack, structured cabling, power/cooling coordination, and new-facility stand-ups.
Relevant technical or security certifications, such as Security+, CISSP, RHCSA/RHCE, VMware VCP, Nutanix NCA/NCP, Microsoft certifications, or CCNA/CCNP.
Full-time regular employee offer package:
Pay within range listed + Bonus + Benefits + Equity

Senior IT Operations Engineer (R6117) at f7d8749a-72d6-407c-bf98-292ea630c73a · LumiJobs

Senior IT Operations Engineer (R6117)

Responsibilities

Qualification

Required

Preferred

Benefits

Company

f7d8749a-72d6-407c-bf98-292ea630c73a

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