Johann Lombardi
Senior Distinguished Technologist at Hewlett Packard Enterprise
Lay-Saint-Christophe, Grand Est, France
Summary
👤
Senior🎓
Top SchoolJohann Lombardi is a Senior Distinguished Technologist with 15+ years designing and shipping high-performance, low-latency storage systems for HPC and AI, including leadership on DAOS and the storage architecture for DOE-scale systems like Aurora. He blends deep systems expertise—filesystems (Lustre, DAOS), NVMe/SCM, concurrency controls, and RDMA networking—with hands-on back-end development and repeated IO500 benchmark leadership. Johann has led and mentored distributed engineering teams of 40+, driven software stack evolutions to exploit emerging hardware (DPU/IPU, computational storage, CXL), and chairs the DAOS TSC within the Linux Foundation. Equally comfortable in open-source communities and enterprise R&D, he has a track record of refactoring complex codebases (notably DAOS) to enable new features and scale. Based in France with an engineering degree from Grenoble, he pairs operational rigor with a continuous-learning interest in ML workflows and GPU data paths.
15 years of coding experience
21 years of employment as a software developer
Engineering Diplôma with first class honours Distributed systems and networking, Engineering Diplôma with first class honours Distributed systems and networking at Ecole Nationale Supérieure d'Informatique et de Mathématiques Appliquées de GrenoblePreparatory School Mathematics, Preparatory School Mathematics at Lycée Henri Poincaré Nancy
English, French
Github Skills (10)
c1710
header-files10
storage10
filesystem10
rpc10
c1110
refactoring9
object-storage9
data-structures8
data-structure8
Programming languages (8)
Github contributions (5)
daos-stack/daos
Aug 2015 - Nov 2022
DAOS Storage Stack (client libraries, storage engine, control plane)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 1522 reviews, 386 commits in 7 years 4 months
Contributions summary:Johann was a back-end developer contributing to the DAOS Storage Stack. Their primary focus was on renaming and reorganizing header files in the `include` directory and renaming DAOS-M functions with a consistent prefix. They were also involved in refactoring type definitions and structures shared between multiple components, and modifying RPC calls to handle new function and parameter definitions. Overall, the user appears to be refactoring existing code to allow for the addition of new features, and maintenance of DAOS components such as SR and M.
pmdkspdkhyperconvergeddaosdistributed-storage
daos-stack/daos-stack.github.io
Jun 2019 - Aug 2021
Contributions:5 PRs, 105 pushes, 6 branches in 2 years 2 months
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