Overview
I'm a developmental editor of books, podcasts, games, and screenplays. My career spans nearly thirty years and hundreds of titles, including award winners and bestsellers. I've been a senior editor for two leading U.S. book publishers, Simon & Schuster and Macmillan, and a creative producer for the fiction podcast studio, Realm.
My specialty is speculative fiction, but I'm also interested in thrillers, noir, and psychological suspense. I've developed everything from media tie-ins to literary fiction, standalones to serials, secret histories to epic futures, family dramas to societal upheavals, BIPOC and LGBTQ+ heroes.
Whether it's improving your plot, refining your voice, shaping your characters, building your world, punching up your dialogue, or honing your craft overall—this is what I love doing.
Please note: I do not edit A.I.-generated manuscripts.
TESTIMONIALS:
“As a writer, what you need first and foremost from an editor is a combination of the following elements: honesty, knowledge, directness, integrity. You need a partner, a cheerleader, a collaborator, and I was lucky enough to find an editor who had all these qualities when I started working with Marco.”
—James Swallow, New York Times bestselling author
“Marco took a novelette that I had put through months of workshop, and unclogged my brain to release exactly what the story needed. He didn't suggest plot or story elements, didn't want the characters to become different people than I made them; he just tried to listen to them deeply as human beings, discussed their histories and motivations with me just like you'd discuss people you knew in real life. That kind of empathy and insight are rare and valuable qualities in any person. Channelled into editing, they work something like magic. My characters did not feel violated or misunderstood, only motivated to show more sides of themselves on the page. No other editor has helped my work grow so organically before.”
—Mimi Mondal, Hugo Award finalist
“Instead of driving a book toward his own vision, Marco meets every story on its own terms, discovers the best elements in each scene and character, and helps bring those to the surface. He does this while keeping a clear view of the whole novel, the themes and character arcs, the major dramatic beats and subtle emotional rhythms that are the breath and blood of every story. My books would not be what they are without his wide-ranging perspective, keen insight, and gentle guidance.”
—Brian Staveley, David Gemmell Award-winning author
“Marco's in-depth assessment of my work was professional, thoughtful, and candid. His recommendations for areas of improvement were immensely helpful and his sense of humor was a pleasure. Marco is the real deal and I'm looking forward to working with him again.”
—C. L. Schneider, award-winning self-published author
"If there is a gold standard for editing, Marco is the diamond.”
—Geoffrey Thorne, writer-producer of TV, theatre, comics, novels
"I trust Marco with my words, and as a writer, I can offer no higher praise.”
—Kirstin Beyer, NYT bestselling author, TV producer
More testimonials available upon request.
Services
Fiction
Languages
Work experience
Self-employed
Realm
Tor Publishing Group (Macmillan)
Simon & Schuster
Portfolio
Marco has 6 reviews
Professionalism
Quality
Value
Responsiveness

Nick M.
Apr, 2025

James M.
Feb, 2025

Theo C.
Feb, 2025

Diana S.
Dec, 2024

Sven V.
Dec, 2024
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