The Ceph Team

The number of people maintaining Ceph and related code is enormous, however we wanted to highlight a few of the leaders among our community in order to direct questions appropriately.

Core Team

Sage Weil Founder / Architect
Neha Ojha RADOS
Yehuda Sadeh RGW
Matt Benjamin RGW
Jason Dillaman RBD
TBD Ceph-mgr
Patrick Donnelly CephFS
Ernesto Puerta Dashboard
Joao Luis MON
Zac Dover Documentation


Zheng Yan Linux Kernel Integration
David Galloway build/test/lab
Mark Nelson Performance / CBT
Sebastien Han ceph-ansible / ceph-docker
Chris Jones ceph-chef / ceph-rust
Alfredo Deza Shaman
Eric Jackson DeepSea (Salt)
Abhishek Lekshmanan Release Manager / Backports
Sebastian Wagner Orchestrator
Mike Perez Community



Sage Weil

IRC: sage

Sage Weil is the founder and chief architect of Ceph, currently employed at Red Hat. He also was the creator of WebRing, a co-founder of Los Angeles-based hosting company DreamHost, and the founder and CTO of Inktank. Weil earned a Bachelor of Science in computer science from Harvey Mudd College in 2000 and completed his PhD in 2007 at the University of California, Santa Cruz working with Prof. Scott Brandt on consistency protocols, data distribution (CRUSH), and the metadata manager in the Ceph distributed file system. [wikipedia]

Neha Ojha

IRC: neha

Neha is a Principal Software Engineer at Red Hat. She is the project
technical lead for the core team focusing on RADOS. Neha holds a
Master’s degree in Computer Science from the University of California,
Santa Cruz.

Neha Ojha

Yehuda Sadeh

IRC: yehudasa

Yehuda has been involved in Ceph since 2008, and has been working on various related projects and subsystems. He is the original developer of the RADOS Gateway (RGW) which he currently co-leads as part of his work at Red Hat. He also worked on multiple other Ceph projects, such as the Linux kernel Ceph filesystem module, and RBD. Notable other Ceph modules that he initiated along with Sage Weil are the Linux kernel RBD module, the RADOS object classes, and the cephx authentication. Before joining Ceph, Yehuda worked in various start up companies, where he developed various storage and networking solutions. He holds a Bachelor degree in Communication Systems Engineering from Ben Gurion University, and a Master degree in Computer Engineering from Tel Aviv University.

Matt Benjamin

IRC: mattbenjamin

Matt Benjamin has been working professionally with Linux and open source software since 1994. He is a contributor to a variety of open source software packages and tools. He co-founded The Linux Box corportation in Ann Arbor, mi, has held a developer position with Comshare, Inc, and has also been a consultant with Integrated Micro Systems. Matt holds a master’s degree from the University of Michigan, and a bachelor’s degree (Summa Cum Laude and Phi Beta Kappa) from the University of Missouri.

Jason Dillaman

IRC: jdillaman

Jason Dillaman is a software engineer at Red Hat, has been an active contributor to the Ceph project for over two years, and has been developing distributed systems for over 12 years. Jason currently acts as the project technical lead for the RADOS Block Device (RBD) module within Ceph. He holds a Bachelor’s and Master’s degree in Computer Science from the University of Michigan.

Patrick Donnelly

IRC: pdonnell

Patrick Donnelly is a software engineer at Red Hat, Inc. currently working on the Ceph distributed file system. In 2016 he completed his Ph.D. in computer science at the University of Notre Dame with a dissertation on the topic of file transfer management in active storage cluster file systems.

Ernesto Puerta

IRC: epuertat

Ernesto is the Ceph Dashboard component lead. He previously worked at Telefonica R&D, Alcatel-Lucent, Bell Labs, and Nokia, where he first came to know about Ceph, for a Cloud Video Storage project back in 2015. After that stimulating experience, he joined Red Hat in 2018 and has since contributed to the Ceph Dashboard project, trying to apply his expertise as a Ceph user. Ernesto holds a master’s degree in Telecommunications Engineering from Universidad Politénica de Madrid and currently lives in that very city, famous for its fried calamari sandwich.

Ernesto Puerta

Joao Luis

IRC: joao

Joao has been working on Ceph for a few years now, from the comfort of his home in mild-weathered Lisbon, Portugal. Since an early age found cephalopods to be enjoyable, and frequently makes meals out of them. Most of his time is spent trying to break the Monitors while sipping some not-at-all-obnoxious drink. Currently working at SUSE because the fluffy green chameleon mascot they give out at events really ties the desk together.

Zheng Yan

IRC: yanzheng

Zheng Yan is a software engineer at Red Hat and has been involved with CephFS since 2012. Currently the maintainer of the CephFS linux kernel driver. Before working on CephFS, he was a core developer of Btrfs. Zheng is based in Chengdu, China.

David Galloway

IRC: dgalloway

David started his IT career in 2010 as a Desktop Systems Specialist for Red Hat’s internal employee helpdesk. He became a Lab Admin for the Red Hat Engineering labs in Raleigh in 2013 and was promoted to Systems Administrator in 2015. David transferred to work on the Ceph upstream and downstream test labs full-time in early 2016 and is responsible for the daily care and feeding of the labs, applications, and tooling used for Ceph testing. He also manages the infrastructure that runs all of Ceph’s public-facing sites.

Mark Nelson

IRC: nhm

Mark joined the Ceph team in January 2012 and has 12 years of experience in distributed systems, HPC, and bioinformatics. Mark works on Ceph performance analysis and is the primary author of the Ceph Benchmarking Toolkit. He runs the weekly Ceph performance meeting and is currently focused on research and development of Ceph’s next-generation object store.

Sebastien Han

IRC: leseb

Sebastien Han currently serves as a Principal Software Engineer, Storage Architect for Red Hat. He has been involved with OpenStack and Ceph since 2011 and has built a strong expertise around them. Curious and passionate, he loves working on bleeding edge technologies and identifying opportunities where OpenStack and Ceph can enhance the user experience. In 2013, he began working with containers as well and ultimately implemented containerized Docker Ceph services. Now on a daily basis, he rotates between Ceph, OpenStack, and Docker in an effort to strengthen the integration between all three. From time to time, he attends various events where he evangelizes these technologies and their usage, while devoting his copious spare time to blogging. See But alas, this is just the beginning :).

Chris Jones

IRC: cloudm2

Chris is a Technical Lead at Bloomberg for Cloud Storage, including Ceph Object and Block storage. He maintains Ceph-Chef Chef Cookbooks and Ceph-Rust (Official Rust SDK for Ceph). Chris also maintains other opensource projects for Enterprise storage including aws-sdk-rust and s3lsio located at

Eric Jackson

IRC: ericjack

Eric is a developer at SUSE. He has been primarily a sysadmin for software development focusing on automation and integration for telecoms, cable and startups. He spends his free time with family, gaming and binging on the occasional anime.

Abhishek Lekshmanan

Abhishek is a Software Developer at SUSE. He has been involved with the Ceph project since 2014 and has worked in the backports team, documentation & RGW. He currently tries to rotate his time between RGW, deployment & helping the release team coordinate the releases

Sebastian Wagner

IRC: SebastianW

Sebastian Wagner is a Senior Software Engineer at SUSE, where he has been working for Ceph since 2016. He is the maintainer of the orchestrator module within the Ceph mgr. Sebastian achieved his master’s degree in computer science in 2014 at the University of Applied Science Wedel.

Mike Perez

Mike Perez

IRC: thingee

Mike is the Ceph Community Manager at Red Hat. Being a contributing member of OpenStack since 2010, he has served as a core developer for the OpenStack block storage project Cinder and as a PTL for the Kilo and Liberty releases. During some of this time, he worked for DreamHost in helping with their OpenStack public cloud, one of the first large production deployments of Ceph, and helping with integrating a variety of block storage solutions like Ceph in Cinder. He later joined the OpenStack Foundation to help with the success of cross-project initiatives and the overall quality and health of the project and community.

When Mike is not trying to make a computer work, he can be found: dancing, getting his hair done, playing with modular synthesizers, and doing karaoke for your entertainment.