I describe the process I went through in https://jonatack.github.io/articles/how-to-review-pull-requests-in-bitcoin-core and in https://youtu.be/Bduon80-4CE.

Wladimir van der Laan invited me to join the two GitHub teams (bitcoin and bitcoin-core) in early November 2019 after almost 8 months of contributing. IIRC I was the only addition to those teams in 2019.

Wladimir van der Laan's humble, intelligent, experienced, service-oriented, uplifting, tolerant, reluctant leadership style as lead maintainer of Bitcoin Core over a decade provided the original inspiration for me to consider returning to open source and working on Bitcoin Core. I think Wladimir is the gold standard and best example I have seen of open source maintainership that people can aspire to.