expert guidance

maybe? what's the contxt?

"fachlich" usually means related to the industry in which the Company operates and is often translated "expert", "professional", "industrial" sometimes even "business". Business seems a bit close to strategic here.

Sammy, Lena_de:
vielen Dank für Eure Vorschläge

Wäre eventuell auch:

responsible for the strategic and technical mananagement denkbar?

Ich suche immer noch....

Technical ist auch hervorragend für "fachlich", das kannst du so nehmen.

perhaps technical management