Every year, the Jitsi team gathers at FOSDEM, the Free and Open Source Developers European Meeting, and there are presentations about some technical aspects of the project.
They are very lively, and do useful work.
This year, there will be a talk about Speech-to-Text in Jitsi Meet > https://fosdem.org/2018/schedule/event/jitsi/
Happening in Brussels, Belgium on 3 & 4 February 2018 ;)