I have read several posts on the forum but there seems no good information hub for EU based postdoctoral/researcher funding opportunities. I will be grateful if someone can give me a start.
By the way, I have found this list myself.
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I would suggest two options 1) applying for your own funding and/or 2) apply for a job where someone has aquired funding and is looking for a postdoc. Option #1 is far more desirable - though also more risky.
For option 1) There are several EU funding options (many country specific). Not knowing your field, you might have a look the EU call; http://europa.eu/about-eu/funding-grants/
For option 2) Academics post positions for postdocs all the time. Akadeus.com is a good starting point. https://www.akadeus.com/
I hope that helps!
Have a look at the EURAXESS portal by the European Commission. Besides their job listing, they offer information and services to support relocation to another country, and information for non-european researchers wishing to work in Europe. If you're looking at a specific country, you can also check out the national portals.