Mix and mastering

Hello I am looking for a mixing and mastering on consistent production soongs. I want to send you a song and see what you can do with it

Additional info:
The song has somewhere between 10 and 30 tracks recorded that need mixing. I'm interested in working with a very experienced mastering engineer. I need it by 31 October, 2023. I work for a business with music production needs. The song is mixed and ready to be mastered. .