Sebastian has shown great interest in the Node project and has been contributing to the website team. As an already maintainer of Express.js, member of the OpenJS CPC and being quite active here on GitHub and Slack, this nomination becomes a no-brainer.

Pull requests opened throughout the Node.js organization
Comments on pull requests throughout the Node.js organization
Comments on issues throughout the Node.js organization
Comments on pull requests and issues in the nodejs/nodejs.org repository

cc @bjohansebas
cc @nodejs/web
cc @nodejs/nodejs-website