I need song mixed and mastered

I finished a song and now I need a professional worldwide quality sound for it. So I need mixing and mastering. Thanks

Additional info:
The song has somewhere between 30 and 50 tracks recorded that need mixing. The tracks are cleaned, tuned, and and the song is ready to be mixed. I'll need you to master it too if possible. I'm looking to hire a top pro who's worked on hit songs, and have the budget for that. I need it by 10 January, 2020. .