HPC Systems Administrator

Payrate: $58.00 - $58.00/hr
 
Summary
The HPC Systems & Scheduler Administrator is a senior-level technical specialist responsible for the Linux systems administration, Slurm workload management, and Linux Virtual Desktop (VDI) environment supporting company's enterprise HPC. Embedded within the ADT organization and working in close collaboration with the DT team, the engineer will be a primary technical owner of the scheduler and Linux OS layer of the HPC stack, driving system reliability, throughput, and user experience.
 
Key Responsibilities

• Linux Systems Administration

• Manage OS-level configuration, patching, and hardening of HPC compute nodes, login nodes, and head nodes; ensure stability and security compliance in coordination with DT's cybersecurity policies.

• Slurm-Based Scheduler Administration

• Serve as the primary subject matter expert for the Slurm workload manager; manage partition configurations, node scheduling policies, fairshare/priority weighting, reservation management, and Quality of Service (QoS) tiers.

• HPC Application Environment

• Manage environment module frameworks (e.g., Lmod/Environment Modules), compiler toolchains, MPI libraries, and application runtime environments in support of engineering simulation codes.

• Linux VDI Management

• Administer and maintain Linux Virtual Desktop environment; manage image lifecycle, user session management, OS configuration standardization, and application delivery to Linux desktop users.

• System Monitoring & Alerting

• Deploy and maintain comprehensive system monitoring (e.g., Ganglia, Grafana/Prometheus, CloudWatch) for compute, scheduler, and Linux VDI environments; establish alerting thresholds and on-call response protocols with DT.

• Scheduler Optimization & Throughput

• Design and tune scheduling configurations to maximize throughput and minimize queue latency; develop strategy to prioritize HPC usage across user community and reduce queue times.

• Latency & Performance Optimization

• Profile and tune system-level performance bottlenecks including network fabric (e.g., EFA/InfiniBand), I/O subsystems, and memory bandwidth; collaborate with the HPC Performance Engineer on application-level profiling.

• User Account & Access Management

• Support Linux-side user provisioning, group management, SSH key governance, and sudo/privilege management in collaboration with DT's identity management processes.

 
Qualifications and Skills:

• Advanced Linux administration skills (RHEL/CentOS/Rocky Linux ecosystem preferred)
• Deep expertise with Slurm Workload Manager (configuration, troubleshooting, performance tuning)
• Demonstrated experience administering Linux virtual desktops or thin-client environments
• Experience managing environment modules, compiler toolchains, and MPI runtimes (OpenMPI, Client MPI, etc.)
• Experience with HPC networking concepts (latency optimization, MPI tuning, high interconnects)
• HPC Linux systems administration experience in a production environment
• Proficiency with system monitoring and observability tooling']
• AWS cloud HPC experience (AWS ParallelCluster, EC2 HPC instances, EFA networking)
• Experience contributing to or supporting a CI/CD pipeline for HPC configurations
• Familiarity with GPU compute environments (CUDA runtime, GPU partitioning in Slurm)
• Knowledge of cybersecurity hardening standards for Linux HPC
• Scripting proficiency in Python, Bash, or Ansible for automation

 
Pay Transparency: The typical base pay for this role across the U.S. is: $58.00 - $58.00/hr. Non-exempt positions are eligible for overtime at a rate of 1.5 times the base hourly rate for all hours worked in excess of 40 in a work week, or as required by state or local law. Final offer amounts, within the base pay set forth above, are determined by factors including your relevant skills, education and experience. Full-time employees are eligible to select from different benefits packages. Packages may include medical, dental, and vision benefits, health savings accounts with qualified medical plan enrollment, 10 paid days off, 3 days paid bereavement leave, 401(k) plan participation with employer match, life and disability insurance, commuter benefits, dependent care flexible spending account, accident insurance, critical illness insurance, hospital indemnity insurance, accommodations and reimbursement for work travel, and discretionary performance or recognition bonus. Sick leave and mobile phone reimbursement provided based on state or local law. 

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