Translating "invited lecturer at the Winter School..."

Question

How can I translate for a French CV the following:

invited lecturer at the Winter School...

and

invited lecture at the Winter School...

I have seen many variations (linguee even gives examples with Winter School as it is) but I cannot pick up the proper ones. Even my French colleagues do not share the same opinions. I am wondering also why the word “lecturer” exists in Canadian French and not in the French of the hexagon.

Answer 1

Lecteur exists but is restricted to language teaching.

The term "lecturer" has different meanings depending on the country. If this position includes both research and teaching, the translation would be maître de conférences invité. It can be found in official documents. If research is not part of the job, that might be attaché, adjoint or assistant d'enseignement invité, intervenant extérieur¹ or just conférencier.

Regarding winter school, the expression seems to be sometimes used untranslated but we also use école or université d'hiver, just like summer school commonly translates to école or université d'été.

¹_{Thanks to Flying_whale for suggesting it!}