Phil is a Senior Technical Staff Member with IBM’s Cloud CTO office. Phil is a core contributor and maintainer on the Docker engine project where he has contributed key features like user namespace support and multi-platform image support.

Phil also is a founding maintainer in the newly formed containerd project and participates in the Open Container Initiative (OCI) and runc project on behalf of IBM.

Phil actively guides both IBM product teams and IBM’s customers in applying container technology and concepts to their own cloud native efforts. Phil speaks regularly at industry conferences and meetups and enjoys helping customers and developers alike understand this fast growing ecosystem. Phil actively maintains a blog on container technology topics at and you can find him on Twitter @estesp.