How to present multiple fields of activities in different languages on a simple landing page?

I'm an IT professional working for a larger enterprise in Switzerland. Furthermore, I'm a freelancer (mostly voluntary activities for schools and very small companies) in my home country Germany.

Both fields of activities need to be presented on my personal website. For the IT professional engagement, some sort of blogging is expected by my employer, which must be written in English.

The voluntary activities are very local activities (only a particular region of Germany), thus it should be written in German.

Assuming a re-design of my website, how could I combine both offerings and solve the language mix issue here?

Thoughts

I was thinking of a simple, localized landing page, with two "buttons" redirecting a visitor to the field of activities (sub-page/dedicated page or site) written in either English or German.

Of course, I want to share as much as I can, e.g. about me section and the overall theme, but still keep the effort low. No extra translation of content, no fancy language detection.

I'm looking for some real-life examples or other ideas.