Do you know some devs online communites in Poland?

Poland? No. But Discord doesn't discriminate on where your from, just might be harder to find communities in a language other than English. Here's my favorite dev community on Discord though https://discord.gg/pHAVWB89gw

This is the biggest and oldest organization for IT specialists in Poland. They organize meetups, conferences, Sell gaming laptop and other events throughout the year. They also have a forum where developers can discuss technical topics and network with each other.

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