Multilingual Translation Services Required

I'm in need of a professional translator who could efficiently translate various documents for me. As I've not specified a single language, the freelancer should be adept in English (US), English (UK), German, and French. This gives space for multi-linguists to step forth.

Parameters I'm primarily focussing on include:

-The usage of appropriate and relevant translation techniques and language nuances.

-Polished know-how of the specified languages (US English, UK English, German, and French).

The actual purpose of the said translations are yet to be disclosed. Therefore, potential freelancers must be prepared to adapt to a wide variety of content, which might be for personal, business, or educational purposes.

I'd really appreciate if freelancers could respond with a detailed project proposal as well as evidence of past work and experience in the aforementioned languages.