[dakiol]

I guess it's anecdata. Polish engineers I've worked with weren't that good at technical stuff nor communication (in English). They're overprotective with "their" code and in general we've had more luck with western/southern Europeans.

[kuboble]

I'm from Poland, but I worked in multinational place in Europe and I would rank polish people on average in the middle of pack in terms of working ethic.

Behind Germans, or Scandinavians, but ahead of most Mediteraneans.

[atraac]

I'm Polish, working for globally remote companies. I second the communication issue. Most Polish devs are so ashamed of their english(even if it's perfectly communicative) that it makes it hard to discuss technical ideas with them. As for technical knowledge, I guess that's cognitive bias, most Polish devs I met were far better at tech stuff than most f.e. Germans I worked with.

[ozim]

Looking at other comments it seems like your experience is less representative.