> Markdown version of [/jobs/ext/1346280-systems-administrator](https://www.wearedevelopers.com/jobs/ext/1346280-systems-administrator). 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). --- # Systems Administrator - **Company:** CALSPAN, LLC - **Location:** Buffalo, NY, United States - **Experience:** Experienced - **Salary:** $80,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Domain Controllers, Microsoft Azure, Backup Devices, Bash Shell, Computational Fluid Dynamics, Configuration Management, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), FlexNet Publisher, Hyper-V, Identity and Access Management, Job Scheduling, Lightweight Directory Access Protocols (LDAP), Linux System Administration, Performance Tuning, Red Hat Enterprise Linux, Ansible, Simulation Software, Virtualization Technology, VMware VSphere, Scripting, Data Storage Management, High Performance Computing, Parallel Computation, Infrastructure Automation Frameworks, Storage Technologies, Low Latency, Slurm, Ansys, Network Server, Engineering Base - **Published:** July 19, 2026 - **Apply:** https://www.juju.com/job/00000000ghqqz3 ## About the Role + Experience:3-5+ years of experience in Linux Administration, with specific exposure to HPC environments. + OS Expertise:Deep proficiency inRed Hat Enterprise Linux (RHEL)is required. + HPC & Software:Experience administering HPC clusters and supporting engineering applications (Ansys Fluent, Star-CCM+). + Storage:Hands-on experience withHPE Nimble Storage. + Scripting:Proficiency inBash or Pythonfor system automation. Preferred (Bonus) Skills + Experience withInfiniBandor high-speed low-latency networking. + Familiarity with job schedulers likeSlurm, PBS Pro, or LSF. + Knowledge of containerized HPC workloads (Singularity/Apptainer). + Experience withHPE InfoSightanalytics. ## Description Calspan is seeking a highly skilled Systems Administrator to manage our core infrastructure and High Performance Computing (HPC) environments. This role is responsible for the stability of ourWindows Servers (including Active Directory, GPO, Domain Controllers, Azure, DHCP, DNS),Red Hat Enterprise Linux (RHEL)clusters, virtualization layer, andHPE Alletra/Nimble storagesystems. You will act as the primary administrator for our engineering compute resources, supporting critical simulation software such asAnsys FluentandStar-CCM+. The ideal candidate is an "automate-first" professional who combines strong Linux skills with the ability to troubleshoot complex engineering workloads. Responsibilities + High Performance Computing (HPC) & Engineering Support + HPC Cluster Administration:Deploy, configure, and manage Linux-based HPC clusters. Monitor node health, job queues, and system performance to ensure maximum throughput for engineering simulations. + Application Support:Troubleshoot and optimize engineering simulation software, specificallyAnsys FluentandStar-CCM+. Resolve issues related to MPI libraries, parallel processing, and solver convergence errors caused by infrastructure constraints. + License Management:Manage floating license servers (e.g., FlexNet/FlexLM) for engineering applications to ensure availability and compliance. + Job Scheduling:Administer workload managers/job schedulers (e.g., Slurm, PBS, or LSF) to prioritize and distribute engineering jobs effectively. + System Administration (Red Hat Focus) + RHEL Administration:Expert-level management ofRed Hat Enterprise Linux. Handle kickstart deployments, satellite management (if applicable), kernel tuning, and security hardening. + Virtualization:Manage the hypervisor layer (e.g., VMware vSphere, HyperV). Handle VM provisioning, resource pooling (CPU/RAM), and performance tuning for virtualized engineering workloads. + Identity & Access Management:Administer user access in Active Directory/Entra ID, ensuring seamless authentication for both Windows and Linux/HPC environments (via LDAP/SSSD). + Storage Management (HPE/Nimble Focus) + HPE Storage Administration:Manage the complete lifecycle ofHPE storage infrastructure, specificallyHPE Nimblearrays. + Performance Tuning:Optimize storage protocols (NFS/iSCSI) to handle the high I/O throughput required by HPC simulations. + Capacity Planning:UtilizeHPE InfoSightto monitor trends and forecast storage needs for large engineering datasets. + Backups & DR:Maintain robust backup strategies and Disaster Recovery plans for critical engineering data. + Infrastructure Automation + Infrastructure-as-Code:Write and maintain scripts usingPython, Bash, or PowerShellto automate cluster node provisioning and system maintenance. + Configuration Management:Use tools like Ansible to enforce consistent configurations across the HPC nodes and general server estate. ## Related Videos - [Running Secure Life Science Research at Scale using Hybrid GPU HPC and Kubernetes 🧬](https://www.wearedevelopers.com/videos/100355-running-secure-life-science-research-at-scale-using-hybrid-gpu-hpc-and-kubernetes) - [Cloud Vendor Lock-In - Is it just a new version of the Database Abstraction Layers?](https://www.wearedevelopers.com/videos/1185-cloud-vendor-lock-in-is-it-just-a-new-version-of-the-database-abstraction-layers) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Minimising the Carbon Footprint of Workloads](https://www.wearedevelopers.com/videos/1198-minimising-the-carbon-footprint-of-workloads) - [Colorful quantum randomness](https://www.wearedevelopers.com/videos/100257-colorful-quantum-randomness) - [Hacking MSSQL on Cloud. All of them. 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