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 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. The song has somewhere between 30 and 50 tracks recorded that need mixing. I need it by 10 January, 2020. .