Real Life Meetings
There is an Ubuntu LoCo / FSFE (Free Software Foundation Europe) meeting every second Thursday of a month (with possible exceptions) at the Bitwäscherei in Zurich.
There is also a monthly Debian meeting in Zurich, which might be of your interest.
IRC Meetings
Currently, no IRC meetings are planned. You can, of course, always join #ubuntu-ch on irc.libera.chat to meet other LoCo team members.