Jiannan (Jay) Guo is working for IBM China as software engineer. His main job is to contribute and advocate open source projects and he is currently maintainer of Hyperledger Fabric, a permissioned blockchain technology. He used to contribute to Apache Mesos, a container orchestration platform, and Cloud Foundry, a platform as a service project.

He has previously spoken at various conferences, including Hyperledger Global Forum, MesosCon and many meetups across the world.