Stripe Connect Specialist / Consultant

Hi dear community,
for our multivendor we use Stipe Connect.
We also had a connection programmed and the Basic functions work as well.
But we need a specialist, because we need e.g. Stripe Billing and Stripe Tax.
We need not only a programmer, but someone who knows Stripe well, so a consultant.
Do you know someone? :)
Thanks a lot in advance!