Senior LustreFS Engineer - AI-Driven Debugging

DDN; Texas; On-site; USD 160,000 - 260,000; Full time

Job summary

DDN is seeking a Staff Engineer with 10+ years of distributed storage and Linux systems expertise. You will drive LustreFS features, diagnose complex scale issues, and collaborate across engineering, QE, support and release teams.

AI-assisted triage and diagnostic tooling will accelerate debugging and feature design. The role emphasizes hands-on development, performance tuning and reliability improvements for large Lustre deployments, with cross-functional engagement to ensure operational

Qualifications

• ~10+ years of experience in distributed storage or Linux-based systems engineering.
• Strong LustreFS knowledge, with depth in at least one major subsystem.
• Strong C programming and Linux debugging skills.
• Working knowledge of Linux kernel internals, filesystem semantics, networking and performance analysis.
• Experience with LNet and/or high-performance transports such as RDMA, InfiniBand, RoCE or TCP-based storage networking.
• Ability to debug and resolve issues spanning multiple layers including client, server, network and backend storage.
• Strong collaboration skills and ability to work across functions in a fast-moving engineering environment.

Responsibilities

• Design, develop and debug LustreFS features, fixes and enhancements across subsystems such as llite, MDS/MDT, OSS/OST, LDLM and LNet.
• Investigate defects, drive root-cause analysis and implement high-quality fixes with strong attention to correctness and maintainability.
• Contribute to performance tuning, failure analysis and reliability improvements for large-scale Lustre deployments.
• Participate in code reviews, design reviews and subsystem discussions with emphasis on testing and operational readiness.
• Work with QE and support to reproduce issues, improve diagnostic data quality and coverage for high-risk failures.
• Help document subsystem behavior, debugging approaches and operational best practices.
• Use AI-assisted tools to speed up triage, summarize logs, improve code understanding and capture reusable lessons learned.
• Hands-on development and debugging of LustreFS defects, performance issues and subsystem enhancements.
• Customer-facing issue investigation across llite, metadata, object storage, LNet and transport layers.
• Collaborative design and implementation of reliability, observability and serviceability improvements.
• Review and validate fixes through targeted tests, failure injection, log analysis and performance characterization.

Skills

Distributed storage

LustreFS

C programming

Linux kernel

Performance engineering

Debugging

AI-assisted tooling

Cross-functional collaboration

Scale/large-scale systems

RDMA networking

Job description

DDN is seeking a Staff Engineer with 10+ years of distributed storage and Linux systems expertise. You will drive LustreFS features, diagnose complex scale issues, and collaborate across engineering, QE, support and release teams.

AI-assisted triage and diagnostic tooling will accelerate debugging and feature design. The role emphasizes hands-on development, performance tuning and reliability improvements for large Lustre deployments, with cross-functional engagement to ensure operational