Need several songs mixed and mastered

I’ve finished several songs and desperately need engineering mixing and mastering done as soon as possible in order to have the best sound quality I can possibly get.

Additional info:
The song has somewhere between 30 and 50 tracks recorded that need mixing. Check out the song I attached. I'll need you to master it too if possible. I'm interested in working with a very experienced mixer. I need the mixer to do some editing, time aligning and vocal tuning before mixing. I don't have a hard deadline for this.