Joanna Simmons studied English and European literature at the University of Warwick and has worked as a journalist since 1995, after a stint teaching English in Tokyo. She has written for a big range of magazines and newspapers, from Livingetc to The Guardian, and has had several books on interiors published. She also co-wrote a humorous parenting book, Can I Give Them Back Now?: The Aargh To Zzzzzz Of Parenting, which was published by Square Peg in summer 2009, and reissued in paperback in 2010.

Inspired by two young sons who are ever on the hunt for fun, lively fiction, Joanna wrote the first book in the Pip Street series, Pip Street: A Whiskery Mystery which was published in March 2013. Her first Super Loud Sam novel published with Scholastic in 2015 and her sequel Super Loud Sam vs Birdman was published in May 2016. Joanna's latest middle-grade novels I Swapped My Brother on the Internet and The Dodo Made Me Do It were published by Bloomsbury in January 2018. 

She lives in Brighton with her husband and her boys. She likes running and reading (but not at the same time, obviously).