Kat Brzozowski

Kat Brzozowski – Editor

I’m a senior editor at Macmillan Children’s Publishing Group, where I edit picture books, middle grade, and young adult novels.

Overview

I’m a senior editor at Feiwel & Friends at Macmillan Children’s Publishing Group, where I’ve worked since 2016 following seven years at St. Martin’s Press.

I currently edit a wide range of genres, from picture books to middle grade to young adult novels, with the occasional adult novel in the mix. You name it, I’ve edited it in my 17 years of publishing - memoirs, mysteries, women’s fiction, and everything in between. I've worked on New York Times-bestsellers, major award winners, and critical darlings, but my specialty is fiction for children and teens.

I’m a collaborative, curious editor who excels at meeting authors where they are. I see my job as asking the right questions to guide authors to the solutions that will work for their book. I've worked with authors at every point of the publishing process, from people who had an idea that they needed help shaping to writers with a finished manuscript that needed an extra polish.

*Since I work for a publisher, please note that working together on Reedsy does not give access to me as an acquiring editor. I only accept manuscripts on submission that come through agents or through writers conferences.*

Services
Non-Fiction
Biographies & Memoirs Children’s Non-Fiction
Fiction
Middle Grade Picture Books Women's Fiction Young Adult
Languages
English (US)

Work experience

Macmillan Children's Publishing Group

Jun, 2016 — Present
I acquire and edit 10-15 books a year across picture book, middle grade, and young adult novels.

St. Martin's Press

Sep, 2009 — Jun, 2016 (over 6 years)
I acquired and edited 10-15 books a year, including memoirs, mysteries, thrillers, young adult fiction, cookbooks, non-fiction, and more.

Portfolio

Mirror Season

Mclemore, Anna-Marie

Square Fish

Developmental Editing
Developmental Editing
Unholy Terrors

Clipstone, Lyndall

Square Fish

Developmental Editing
Shivi's Big Leap

Rao, Kritika H.

Feiwel & Friends

Developmental Editing
There's Something Odd About the Babysitter

Crain, Elayne

Feiwel & Friends

Developmental Editing
Developmental Editing
Ollie In Between

Callans, Jess

Feiwel & Friends

Developmental Editing
Stinetinglers

Stine, R L

Square Fish

Developmental Editing
Everybody Has a Body

Ehlert, Molli Jackson

Feiwel & Friends

Developmental Editing
I'd Rather Burn Than Bloom

Rogers, Shannon C. F.

Feiwel & Friends

Developmental Editing
I Love You More Than You'll Ever Know

Odom Jr., Leslie

Feiwel & Friends

Developmental Editing
Failing Up

Odom, Leslie

Square Fish

Developmental Editing

Kat has 10 reviews

Professionalism

Quality

Value

Responsiveness

Clark S.

Clark S.

Oct, 2026

Working with Kat has been a dream come true! If you're fortunate enough to work with her, think of it like this. You're getting a personalized one-on-one Master's in creative writing with a working editor that is whip smart and knows the children's book/YA space inside-out since she's currently ...
Read more
Kat B.
Clark! Our collaboration has been such a joy for me. Thank you for this lovely review and for being such a great creative partner.
Chris S.

Chris S.

Sep, 2026

Thanks to. Kat. Thorough professional, provided great advice.. recommended.
Kat B.
Thanks, Chris! I appreciate the chance to take a look at this, and I wish you the best of luck.
Robert L.

Robert L.

Sep, 2026

I'm a traditionally published author currently in query mode. Kat assessed both my query letter and the first three chapters of my book. Kat's feedback was insightful and detailed and I plan to incorporate every note into my edits moving forward. I'm excited to dive back in. Kat is awesome! Highl...
Read more
Kat B.
Thank you, Robert! I loved working together and hope our paths will cross again.
Jeanne J.

Jeanne J.

May, 2026

Kat was kind enough to review my manuscript under a tight deadline. Her comments show her depth of experience. They were insightful, specific and pushed me to improve. She guided me on finding the emotional core of my story and to add humor and kid language. I would definitely work with her again.
Kat B.
Thank you, Jeanne! I loved working with you and hope to do it again soon.
M. A.

M. A.

May, 2026

Kat was awesome and I'm so glad I got to work with her.
Kat B.
Thanks, Marzieh! I loved working on your book.

Sign up to read more reviews

Create a free Reedsy account to connect with Kat and thousands of other publishing professionals on Reedsy.

Professionals similar to Kat

Get a range of offers by requesting quotes from multiple professionals.

Jules H.

I have 21 years of experience and specialize in YA/MG, lit fic, LGBTQ+, women's fiction, memoirs, and authenticity reads. Tell me about you!

Cincinnati, OH, USA

100% reply rate

View profile

Sam F.

I am a New York City-based literary agent with a leading agency, specializing in children's and adult fiction across genres.

New York, NY, USA

100% reply rate

View profile

Hope B.

Editor of 600+ authors, specializing in YA, MG, Christian fiction, romance, and fantasy (but open to edit anything), former literary agent.

100% reply rate

View profile