dass ich die für Ihre Stelle erforderlichen Kenntnisse und Qualifikationen habe.

Hi sfpugh, 

the "die" is actually an article for "Kenntnisse und Qualifikationen".
The attribute "für Ihre Stelle erforderlichen" in between article and nouns functions as closer information about the nouns "Kenntnisse und Qualifikationen" - "erforderlichen" is an adjective. 

I hope that helps. 

Liebe Grüße, 
Leah von Rocket Languages

Thank you for pointing that out,  I was confused by "für Ihre Stelle" as that would go after the nouns in English. It certainly wouldn't go where it is here.
I suppose you could put "for your position" at the start of the phrase for emphasis "I am definitely of the opinion that, for your position,  I have the necessary skills and qualifications." but it sounds a bit odd.