Hybrid Senior Systems Engineer – HPC

at Rackspace Technology

• Job title: Senior Systems Engineer – HPC
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Ansible, AWS, Azure, Cloud, DNS, Google Cloud Platform, Jenkins, Linux, Python, TCP/IP, Terraform
• Location requirements: Hybrid, Gurgaon, India

About the role

• Senior Systems Engineer responsible for HPC cluster management and optimization at Rackspace. Collaborating with scientists and handling technical support for high-performance computing.

Responsibilities

• Install, configure, and maintain HPC clusters (hardware, software, operating systems).
• Perform regular updates/patching and manage user accounts and permissions.
• Troubleshoot/resolve hardware or software issues.
• Monitor and analyze system and application performance, identify bottlenecks and implement tuning solutions.
• Manage job scheduling and resource allocation using tools such as Slurm, LSF, Bright Cluster Manager, OpenHPC, and Warewulf.
• Configure Linux networking (TCP/IP, DNS, routing) and HPC interconnects (InfiniBand, Ethernet).
• Implement and maintain large-scale storage and parallel file systems (Lustre, Ceph, GPFS) ensuring data integrity and managing backups.
• Implement security controls and manage authentication services like LDAP and Active Directory.
• Automate deployments and system configurations using tools like Ansible, Terraform, Jenkins, and Git.
• Provide technical support, documentation, and training to researchers and collaborate with scientists and HPC architects.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field (equivalent experience may substitute for degree).
• Minimum of 10 years of systems experience, including at least 5 years working specifically with HPC.
• Strong knowledge of Linux operating systems (e.g., Rocky Linux, Ubuntu) with a fundamental understanding of Linux internals, system administration, and performance tuning.
• Experience building and managing RPM and DEB packages.
• Experience with cluster management tools such as Bright Cluster Manager, OpenHPC stack, or Warewulf.
• Proficiency with job schedulers and resource managers such as Slurm and LSF.
• Strong understanding of Linux networking (e.g., TCP/IP, DNS, routing) and HPC interconnects (e.g., InfiniBand, Ethernet) including performance tuning.
• Knowledge of parallel file systems such as Lustre, Ceph, or GPFS.
• Working knowledge of Linux authentication and directory services such as LDAP and Active Directory.
• Proficiency in scripting languages (e.g., Python, Bash, R) and familiarity with MPI libraries for parallel and distributed computing (nice to have).
• Strong experience with DevOps and configuration management tools, including Ansible, Terraform, Jenkins, and Git.
• Knowledge of HPC in cloud environments (e.g., AWS, Azure, GCP HPC offerings) is a plus.
• Strong knowledge of Linux security, compliance standards, and data protection best practices.
• Excellent communication, interpersonal, and problem-solving skills.