- Tiffany Amber — composer
- Ammo — Instrumentation, Producer, Programming, background vocals
- Beatriz Artola — Engineer
- Stacey Barnett — background vocals
- Billboard — instrumentation, producer, programming
- Benny Blanco — instrumentation, producer, programming, background vocals
- Sophia Block — background vocals
- Christian Karlsson — Instrumentation, Producer, Programming, Vocal Producer
- Heather Bright — composer, background vocals
- Jeremy Coleman — composer
- Joshua Coleman — composer
- Tom Coyne — Mastering
- Esther Dean — composer, background vocals
- Megan Dennis — Production Coordination
- DJ Ammo — Drum Programming, Synthesizer
- Dr. Luke — executive producer, instrumentation, producer, programming, background vocals
- Dream Machine — instrumentation, producer, programming
- Dylan Dresdow — mixing
- Eric Eylands — assistant engineer
- Ashton Foster — background vocals
- Livvi Franc — composer, background vocals
- Fraser T. Smith — composer, Drum Programming, Keyboards, Producer
- Serban Ghenea — Mixing
- Clint Gibbs — Production Coordination
- Aniela Gottwald — Assistant
- Tatiana Gottwald — Assistant
- Venza Gottwald — Assistant
- John Hanes — Engineer, Mixing
- Jeri Heiden — Art Direction
- Jacob Kasher Hindlin — composer
- Sam Holland — Engineer, background vocals
- J-MIKE — Instrumentation, Producer, Programming, background vocals
- Cri$tyle Johnson — background vocals
- Mathieu Jomphe — composer
- Henrik Jonback — composer, Instrumentation, Producer, Programming, Vocal Producer
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- Claude Kelly — composer, background vocals
- Padraic Kerin — Engineer
- Savan Kotecha — composer
- Alexander Kronlund — composer, Instrumentation, Programming
- Adam Leber — A&R
- Benjamin Levin — composer
- Jeremy «J Boogs» Levin — Assistant
- Magnus Lidehäll — composer
- Magnus — Instrumentation, Producer, Programming, Vocal Producer
- Myah Marie — background vocals
- Max Martin — composer, Engineer, Executive Producer, Instrumentation, Keyboards, Producer, Programming, background vocals
- Bonnie McKee — composer, background vocals
- Nicole Morier — composer, background vocals
- Jackie Murphy — Creative Director
- Rob Murray — Assistant
- Chris «Tek» O’Ryan — Engineer
- Chau Phan — background vocals
- Irene Richter — Production Coordination
- Tim Roberts — Assistant Engineer, Mixing Assistant
- Patrizia Rogosch — background vocals
- Larry Rudolph — A&R
- Kesha Sebert — composer
- Sheelback — Engineer, Guitar, Keyboards, Producer
- Shellback — Bass, composer, Engineer, Guitar, Keyboards, Producer
- Nick Steinhardt — Art Direction, Design
- Sophie Stern — composer
- Ryan Supple — Photo Production
- Peter Thea — A&R
- Dave Thomas — Stylist
- Henry Walter — composer
- will.i.am — composer, Drum Programming, Engineer, Piano, Producer, Synthesizer
- Pontus Winnberg — composer
- Emily Wright — composer, Engineer, Vocal Producer
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