[Grammar] Help with proofreading

[ditto2016]

Hey guys, I am a proofreader for a CV writing company and need some help please.
I am Afrikaans born and raised and sometimes the English proofreading gets me stuck.
Please help me to make sure this sentence is correct:
His in-depth understanding of his function, as well as his leadership qualities, professional integrity and pleasant personality make him a very valuable team player.
Thank you guys

 

[teechar]

Hello ditto2016, and welcome to the forum.

His in-depth understanding of his function

That's the only bit I would likely change. What do you mean by "his function"? What does that person do?

 

[Tdol]

His role?