See the OONI Team section of our website: https://ooni.torproject.org/about/
The best way to get in touch with the OONI Team is to join slack at: https://slack.openobservatory.org/.
We also have 2 channels synched with IRC: #ooni, #ooni-dev on OFTC.
All of the software repositories of OONI live on github here: https://github.com/ooni/.
For issue with our software please report a bug in the relevant github issue tracker or send an email to bugs [at] openobservatory.org