HPC Systems Administrator | Experienced Hire

Susquehanna International Group, LLP • Bala Cynwyd (Philadelphia Area), PA

3d • Onsite

About The Position

As a member of Susquehanna’s HPC team, you’ll build and optimize systems supporting trading and research, including high-performance trading infrastructure, compute clusters, databases, and support tooling. You’ll manage an environment of thousands of GPUs, hundreds of thousands of CPU cores, and hundreds of petabytes of storage serving more than 100 quantitative researchers and scientists worldwide.

The role includes contributing to in-house automation tools, collaborating with strategy developers, quantitative researchers, trade-supporting application teams, and IT infrastructure teams, and tuning operating systems and batch workflows. You’ll oversee the HPC environment, including schedulers, parallel filesystems, GPUs, and interconnects; implement and optimize high-performance storage; plan capacity and system design; and troubleshoot failures to restore disrupted workflows.

Requirements

• Bachelor’s degree in Engineering, Computer Science, Information Systems, or a related field, or equivalent experience.
• Experience building and operating Linux-based HPC platforms.
• Experience tuning kernel and I/O subsystems and troubleshooting performance using tools such as sysctl, perf, strace, tcpdump, and Wireshark.
• Strong automation skills in Python, Bash, or configuration management tools such as Ansible.
• Experience administering parallel filesystems such as Lustre, GPFS, or VAST.
• Experience administering and tuning workload schedulers such as Slurm.
• Familiarity with high-speed interconnects such as InfiniBand and RoCE, and GPU cluster environments.

Responsibilities

• Contribute to in-house tools, primarily written in Python and Bash, to automate monitoring and maintenance.
• Collaborate with strategy developers, quantitative researchers, trade-supporting application teams, and IT infrastructure teams to develop scalable solutions.
• Tune operating systems and batch workflows for performance, investigate root causes of system issues, and integrate solutions into systems.
• Oversee the HPC environment, including the scheduler, parallel filesystems, GPUs, and interconnects.
• Implement and optimize high-performance storage solutions, including Lustre, VAST, and GPFS.
• Develop capacity-planning and system-design strategies to support resource allocation and scalability, using analytics to forecast needs.
• Use monitoring and diagnostic tools to identify failures, streamline troubleshooting, and support timely recovery of disrupted workflows.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior