HPC Systems & Scheduler Administrator #26-27411

• 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 Client’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., 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.

• 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, Intel 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

Nice To Have

• 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