Sr/Staff Lustre Engineer

About the Position

Sr/Staff Lustre Engineer

Join DDN as a Sr/Staff Lustre Engineer in Santa Clara, CA. Contribute to Lustre architecture and lead new feature implementation.

Responsibilities

• Contribute to Lustre architecture and lead implementation of new features across core subsystems including MDS/OSS, LDLM, DNE, DoM, FLD, layout, snapshot, quota, security, and recovery
• Write high-performance, production-grade code across the Lustre kernel module, user-space utilities, and supporting libraries
• Own the full development lifecycle for major features, from design and coding through testing, performance tuning, and upstream patch submission
• Improve scalability for multi-petabyte Lustre environments, including metadata performance, I/O path optimization, and integration with modern interconnects and storage fabrics
• Modernize Lustre internals through kernel API updates, locking improvements, RDMA enhancements, and cloud/container-oriented capabilities
• Prototype and evaluate emerging technologies such as NVMe-oF, CXL, and other next-generation storage approaches for potential Lustre integration
• Strengthen regression, stress, and performance validation using tools such as IOR, mdtest, fio, and custom Lustre test tooling
• Perform deep code-level performance analysis using Lustre tracing tools, perf, lockstat, and kernel profilers
• Work closely with Principal Engineers, hardware teams, and application owners to translate real workload needs into practical Lustre improvements
• Mentor other developers and contribute design docs, technical guides, and engineering reviews

Requirements

• 7+ years of progressive, hands-on Lustre software development experience
• A strong track record of meaningful contributions to the Lustre codebase in production or open-source environments
• Demonstrated success designing, implementing, and upstreaming Lustre features that made it into major releases
• Deep understanding of Lustre internals, including MDS/OSS architecture, LDLM locking and recovery, journaling, DNE, DoM, FLD, layout, quota, and security
• Expert-level C programming and strong Linux kernel development experience
• Strong knowledge of distributed systems, parallel file systems, and high-performance I/O
• Experience with Lustre build, development, and debugging tooling such as lctl, llstat, strace, perf, and kernel tracers
• Python and/or Bash skills for tooling and automation
• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related field
• Clear written and verbal communication skills, with the ability to explain complex technical concepts effectively

Nice to Have

• 7+ years in HPC or storage software development
• Visible contributions to the Lustre open-source community, including accepted patches, LUG participation, or public technical talks
• Experience running or developing Lustre in cloud environments such as AWS FSx for Lustre, Azure Lustre, or custom cloud deployments
• Familiarity with adjacent systems such as Ceph, DAOS, BeeGFS, WekaIO, or GPFS
• Exposure to RDMA, NVMe-oF, CXL, computational storage, or AI/ML I/O workloads
• Conference presentations, technical publications, or other public engineering contributions

We Offer

• Competitive salary
• Opportunity to work in a dynamic and innovative environment
• Collaborative and inclusive team culture
• Professional growth and development opportunities

About the Company

DDN

DDN is a leading provider of high-performance computing solutions, dedicated to delivering innovative storage and networking technologies. We are committed to pushing the boundaries of what’s possible in data-intensive environments.