Senior Parallel File System Software Developer

We have an opening for a Senior Parallel File System Software Developer to provide technical leadership in researching architecting developing maintaining and integrating software and hardware solutions that underpin scalable storage services within the Livermore Computing high-performance computing this role you will apply subject-matter expertise and independent technical judgment to advance and sustain production parallel file systems: including resolution of highly complex system-wide software defects and architectural issues in partnership with system administration staff and external collaborators.

Youll independently develop and lead the technical evaluation design integration and sustainment of software fixes upstream patches and locally developed enhancements to address challenging issues on large-scale Linux systems. Additionally this position will establish technical direction for innovative software capabilities in Lustre and ZFS file systems. This position is in the Livermore Computing Division within the Computing Principal Associate Directorate.

This position offers hybrid option. You will have the flexibility to remotely work from home with regular visits to LLNL.

You will

• Provide software engineering technical leadership for the evolution reliability and performance of production Lustre file systems running at petabyte and billion-object scale.
• Serve as a technical subject matter expert and provide technical leadership for highly complex storage-system software development initiatives for new features performance improvements and maintenance of Lustre codebases along with related projects (ZFS Lustre monitoring tools storage quota systems etc.).
• Review both upstream and local code changes set technical criteria for adoption and lead integration of upstream and locally developed changes into production Lustre deployments.
• Lead cross-functional efforts to identify integrate and implement innovative storage system solutions including evaluating technical tradeoffs risks lifecycle impacts and alternative architectures.
• Lead diagnosis and resolution of critical system-wide performance scalability and reliability issues in production storage systems where decisions may affect availability of major Laboratory computing resources and mission workloads.
• Establish and influence technical roadmaps architecture and engineering priorities for parallel file-system software in alignment with long-range Livermore Computing and Laboratory mission needs.
• Provide strategic technical guidance to project stakeholders management and partner organizations including recommendations that influence operational technology-investment and service-delivery decisions.
• Mentor and develop technical staff across the organization and share expertise broadly with the next generation of storage professionals.
• Perform other duties as assigned.

Qualifications :

• Ability to maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship. 
• Bachelors degree in computer science or related field or the equivalent combination of education and related experience. 

• Significant and demonstrated subject-matter expertise in parallel file-system internals including substantial experience with the Lustre codebase.

• Significant experience in a production high-performance computing environment where unplanned downtime has significant operational consequences and end-user impact.
• Advanced proficiency developing systems software in C in a team environment with additional proficiency in C Rust or Python. 
• Highly advanced knowledge and technical experience with Linux operating systems and Linux kernel interfaces including configuration networking and system security.
• Advanced problem-solving and debugging skills to diagnose multi-component problems in highly parallel multi-threaded systems and identify the root cause of complex storage system issues includes advanced proficiency with Linux debugging and inspection tools (examples: strace perf gdb the /proc file system and/or eBPF).
• Expert verbal written interpersonal and technical-influence skills necessary to advise management collaborate across organizations communicate with external technical communities and present and explain complex technical information under limited direction.
• Ability to set priorities independently resolve complex problems and apply new technologies to broadly defined tasks and projects in a fast-paced environment.
• Demonstrated ability to lead technical projects or major workstreams establish technical direction and influence decisions across multidisciplinary teams.
• Availability to work off-hours to resolve production problems on an as-needed basis.

Qualifications We Desire

• Masters degree in computer science or related field or the equivalent combination of education and related experience. 
• Familiarity with open-source storage community contributions cherry-picking patches umbrella organizations (such as OpenZFS or OpenSFS) upstreaming contributions (such as to the Lustre mainline) etc. 
• Demonstrated record of technical contributions to open-source storage projects technical publications conference presentations or leadership in relevant technical communities.
• Experience with integration of traditional storage systems and cloud-first technologies such as S3 data transfer protocol object storage OIDC/OAuth and/or metadata extraction and cataloging systems.
• Experience defining storage architecture or technical roadmaps for large-scale HPC scientific computing or similarly mission-critical environments.

Pay Range

$210630 - $267060 Annually

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage. An employees position within the salary range will be based on several factors including but not limited to specific competencies relevant education qualifications certifications experience skills seniority geographic location performance and business or organizational needs.

Additional Information :

#LI-Hybrid

Position Information

This is a Career Indefinite position open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit Clearance

  This position requires a Department of Energy (DOE) Q-level clearance. If you are selected we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. Also all L or Q cleared employees are subject to random drug testing. Q-level clearance requires U.S. citizenship. 

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  Remote Work :

  No

  Employment Type :

  Full-time

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