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 16+ 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.

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 3 reviews

Professionalism

Quality

Value

Responsiveness

Bernadette M.

Bernadette M.

Feb, 2026

Kat has been wonderful to work with she is detailed and gives great feedback quickly. We have just finished another project and I am sending her my third one. After reading over my own manuscript a hundred times I have often missed some very basic things. Kat approaches all of my work with a de...
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Kat B.
Thank you, Bernadette, for the kind words.
Michelle K.

Michelle K.

Feb, 2026

Kat was a dream to work with for proofreading my project. She was super-responsive and completed the project early. I HIGHLY recommend her!
Kat B.
Thank you, Michelle! I loved working on this project.
Bernadette M.

Bernadette M.

Feb, 2026

Kat made my manuscript better than I expected. She has a great editorial eye and asks thoughtful questions that lead you to stronger choices. She strengthened the structure without changing my voice, and her feedback reshaped key moments. She was always available for questions I finished with a m...
Read more
Kat B.
Thank you, Bernadette! This was such a fun project to work on.

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