Senior Systems Administrator

Summary : The successful candidate will be an active supporting member of the ASRC Federal team reporting directly to the Manager of the HPC Computer Systems and Storage (CSS) group., An individual at this skill level should have demonstrated Linux administration experience as well as working knowledge of HPC operations while contributing to the support of users of HPC resources on the various issues they might have getting jobs to run efficiently. This individual will be expected to participate in all aspects of HPC System Administration that includes such activities as installing, maintaining, and upgrading HPC systems. The individual, along with the entire HPC team, will be engaged in the day-to-day operations and support of the HPC resources. Activities may include system patching, OS upgrades, deploying new systems, writing scripts, and troubleshooting system issues on the HPC system. The ability to interact with users to determine symptoms and then reproduce their issues to isolate the causes is critical skills for this work. There may also be activities supporting testing, benchmarking, tool scripting, and analyzing trouble tickets to find patterns indicating system or user education issues., * Maintains HPC clusters with over 2000+ nodes with InfiniBand, 100+ petabytes of data storage in production.

• Designs and develops scripts for system administration, monitoring and usage reporting.
• Modify existing software to correct errors and/or improve performance
• Designs and develops scripts for system regression test and performance (file systems (Lustre), scheduler (PBS), interconnect (HDR/NDR, Slingshot, ), high availability, etc.).
• Troubleshoots, isolates and resolves application, system and other technical problems (hardware, software, and network).
• Understands research use cases, researches and deploys new technologies, defining cost, performance and other trade-offs.
• Manages and maintains tools for configuration management (HPCM, Ansible & GIT), resource management, scheduling and all necessary aspects of HPC in accordance with best practices.
• Researches, deploys and manages networking and security infrastructure, including development of policies and procedures.
• Assists in developing and writing proposals and publications.
• Creates and provides clear documentation.
• After hours/weekend support as required
• Moderate Supercomputing System Administration that contributes to:
• Day-to-day operations of the Linux HPC clusters and storage systems
• Proactive monitoring, analyzing, and correct system issues
• Development of scripts to automate repetitive tasks or tools to enhance support of the HPC systems
• System performance analysis and tuning
• Building, installing, and supporting user-requested software
• Supporting evaluation and assessment of new HPC technology
• Resolving user report issues and managing support tickets requests in Remedy

• Bachelor’s degree in computer science or related field
• Strong computer science background with in-depth systems-level knowledge in operating systems and networking
• A minimum of 5 years’ experience of administration of Linux systems
• Strong ability to analyze, debug and maintain the integrity of an existing code base
• Demonstrated equivalence of 5 years of Linux/UNIX user support experience and hands-on experience with administration of Linux systems
• Superior scripting skills and excellent attention to detail; proficiency in at least Python, Perl, or Bash
• Strong ability to interact with customers to understand needs, elicit requirements, and get feedback on prototype solutions
• Excellent communication and people skills; excellent time management and organizational skills
• Experience with system configuration management tools e.g. , ansible, puppet, chef
• Experience with revision control software e.g. CVS, SVN, Git
• Proficiency at technical writing

Preferred Skills (Requesting Manager Defines):

• Proficiency with analysis and problem-solving skills for debugging and optimization of applications
• Familiarity/proficiency with OpenMP and Message Passing Interface (MPI) programming
• Experience with Lustre, and InfiniBand
• Experience with cloud technologies (AWS, Azure, GCP), OpenStack or Kubernetes is a plus

ASRC Federal, InuTeq proudly supports NASA’s High-Performance Computing Services program with our site in Mountain View, CA at the Ames Research Center. Make a DIFFERENCE on a program that supports 4 On-site Supercomputers totaling ~9,000 nodes and 25+ combined petaflops. This program provides High-Performance Computing services throughout the HPC lifecycle for computational requirements, architecture, acquisition, to our NASA customer. Our employees embrace innovation and are committed to a culture of continuous, standards-driven process improvement, and assimilation of industry best practices.