Hello, I'm an advertising designer with professional background in broadcasting TV as audio/video editor, author, post producer and commercial creative/maker.
I have experiences with landing pages optimized videos.
Please, take a look at my in-site portfolio or, for an updated one, search for my channel on YouTube: AI productions
(I can't post my link in the proposal for the website's Terms & Conditions).
About the voice over, normally I provide a shortlist of voice talents (in your case male or female European origins and German mother tongue either German, Austrian or Swiss) to select from.
Thus I guarantee a professional final video.
Please, feel free to contact me for further details and information.
Best regards.
A. I.