Tim Marquitz

Tim Marquitz – Editor

I am an author and editor and have worked with hundreds of authors from debut to NYT Bestsellers.


I'm an agented author and an editor since 2009 and have worked in the publishing business on both sides, having also worked as a publisher.

I can help polish your project from the ground up, offering assistance should your goal be self-publishing or finding an agent/publisher. I've experience in most every genre, and I understand maintaining an author's voice and vision, while sharpening and honing the prose and presentation. It's my job to enhance YOUR book and make it shine.

I specialize in fantasy, horror, dystopian, sci-fi, and LitRPG, but have experience in all genres. (No single short stories, please, but collections are fine.)
Action & Adventure Dystopian Fantasy Gaming & LitRPG Horror Humor & Comedy Science Fiction Urban Fantasy
English (UK) English (US)

Work experience


Sep, 2009 — Present

I have worked with some of the biggest names in fantasy and horror, to include Mark Lawrence, Carol Berg, Laura Resnick, Larry Correia, Michael J. Sullivan, James Swallow, Gini Koch, and many more. Lots of experience in most every genre, as well as practical experience in query writing and back cover matter. I also charge well below market rate for excellent work.
“Dominion Editorial were an absolute pleasure to work with. They tolerated my pestering with aplomb (or maybe it was a plum) and got the job done in spite of my ridiculous deadline. Sure, they don’t love semicolons quite as much as I do, but that can be forgiven.”
– Michael R. Fletcher, author of the Manifest Delusions series
“Dominion Editorial did a fantastic job at short notice. They are professional and take every care to make sure your project is as good as it can be.”
– Graham Austin-King, author of The Riven Wyrde Saga
“Dominion Editorial have edited several of my works and each time they have helped to make them better manuscripts. They are thorough and efficient while still allowing my voice to lead the story. I cannot compliment their work enough and I plan on continuing to use their services.”
– Kirk Dougal, author of Dreams of Ivory and Gold, Jacked, and Reset
“Fast, professional, and reasonably priced, Dominion Editorial’s editing gave my first novel the help it needed to shine. I highly recommend Dominion to anyone who’s in the market for editing services.” – James Aquilone, author of Dead Jack and the Pandemonium Device
“Tim Marquitz has a writer’s eye for the kind of structural issues and minutiae that tend to slip past most proofreaders. He’ll work a manuscript till it’s lean and mean.”
– Edward M. Erdelac, author of the Merkabah Rider series, Andersonville, and more.
“Dominion Editorial gave me some fantastic feedback and pointed out some consistent technical mistakes that I’ve been making. I’m very grateful to Tim for not only making a ton of corrections in the manuscript, but pointing out these consistent issues so I can improve on them for future books.”
– Andrew Rowe, author of Attuned
“Dominion Editorial’s process was easy and they made sure to explain it before they got started, offering to answer any questions I had before and after. Along with basic spelling and grammar corrections, they pointed out anything that needed work and offered a thought on how to make it better. Once I got the notes and started working through them, they even dropped me a message to see if I was doing okay with them and if there was anything I needed further help with. And if all of that wasn’t enough, they offered some very supportive thoughts on the story as a whole, going so far as to say it’s a ‘great story.'”
-Ashe Armstrong, author of Grimluk, Demon Hunter
“Dominion Editorial have edited several of my works. Their careful attention to detail and invaluable feedback have challenged me to push the limits of my ability for better overall writing. They are expedient, honest, and have quick turnaround times. I would highly recommend their services to any writer, beginner or otherwise.”
– Eric Fomley, author
“Tim Marquitz and Dominion Editorial added a much needed level of polish to my manuscript. Not only was Tim extremely professional, his work was turned around in record time. My highest recommendation.”
– Timothy W. Long, author of Impact Earth: Symbiosis and more.
“I highly recommend Dominion. Easy to work with and spot on with the edits. I recently sold a novel after using their services. The publisher commented the level of polish on the ms helped seal the deal.”
– Kathryn M. Hearst, author of the SINISTRA DEI series and more.
“A consummate professional and communicative, my experience with Tim Marquitz resulted in a manuscript that was made better by leaps and bounds. Issues were identified with thoughtful observation that was paired with quality suggestions for improvement. I cannot speak highly enough of Tim’s editing abilities, so much so that I would recommend any author looking to get their manuscript ready to go to him first. Every cent spent was worth it!”
– Jay Requard, author of Jishnu
“What I enjoyed most about Tim’s edits on Galefire was the focus on making the piece an overall smoother read and his input on clearing up character inconsistencies and plot confusion. That kind of accurate (if sometimes brutal) honesty is hard to find, and Galefire is a tremendously better book because of it. Thanks, guys!”
– Kenny Soward, author of the Gnomesaga and Galefire
“I want to thank Tim Marquitz for his work on my novella. His editing on my manuscript helped to create the finely-tuned story I am proud of today. His professional attitude, quick communication and attention to detail are second to none, and I’d recommend Dominion Editorial services to anyone seeking help with formatting and editing.”
– Fiona Dodwell


Five years ago, Corin Cadence’s brother entered the Serpent Spire — a colossal tower with ever-shifting rooms, traps, and monsters. Those who survive the spire’s trials return home with an attunement: a mark granting the bearer magical powers. According to leg... read more
Where belief defines reality, delusions are both strength and curse: The deeper you sink into madness the more powerful you become. But that power comes with a price. Your darkest nightmares hunt you at night. The face in the mirror hates you and wants to be f... read more
Aliens exist… and, as it turns out, most of them aren’t that friendly.Jacob Brown wasn’t even born yet the first time they attacked Earth. He was only fourteen the second time it happened. When Earth finally came together and fielded its first spaceborne milit... read more
To save her father……she must take to the sky.But will it be enough? Zaira’s overwhelmed. Living as an orphan on a farm is hard enough, but unnatural earthquakes are ravaging her home.Her life turns upside down when an attorney shows up at her door with harrowi... read more
How far would you go to save your family from a pair of cannibals who claim to be gods?Hank Jensen knows what he must do. If he gives in to his disability—his curse—he will never see his wife or son again. Not alive. In perpetual pain, enervated and exhausted,... read more
Aelathil is on the brink of civil war! Once pampered and spoiled as the only heir to one of Aelathil’s most powerful lordlings, Callan’s world has been tipped upside down by King Ramsey and his mighty dragons. Now he must join the growing resistance or watch a... read more
Finding his way with only a deer as a companion, but he doesn’t know that the deer is an alien. Or that he’s part of their experiment. John’s parents have passed away, leaving him alone in a strange world, where something doesn’t feel right, but nothing feels ... read more
Nominated for 'best self published novel' in the 2018 BookNest Awards.It was the only truth the Gods feared…Beyond the living world, a dark secret is kept from humanity. Demons guard the bridge to heaven, and cast the souls of everyone that dies to fire and as... read more
Magic and Mayhem. Deception and Lore.This gritty dark fantasy ushers you into a dangerous world of tarnished heroes and magic-slinging fugitives.Some of the darkest minds in Perilisc attacked Mending Keep, releasing all its prisoners. Despite his strained rela... read more
One wishes to destroy.One seeks power.One wants only to forget.Three lives shattered by the Fangs of Wallachia—weapons that hold the fragmented soul of the archangel, Samael—are on a collision course with a bloodbath that stretches from Boston to Vatican City.... read more
Jon Jacob sits alone in the pub. A bottle of whiskey pressed to his lips, he grieves by drowning in the drink. The memory of his daughter, too painful to reflect, Jon slips into the drunken abyss of his depression.His solitude, the final act, he prepares for h... read more
Whether by coin or by blood... YOU WILL PAY. A fantasy anthology featuring the deadly, the worldly, and the sneaky. Blackguards consists mainly of stories in established series, and the authors range from wildly successful indie authors to New York Times bests... read more
The light has failed: the era of man is at its end. Born of darkness, the creatures of myth, legend, and nightmare have long called the shadows home. Now, with the cruel touch of the sun fading into memory, they've returned to claim their rightful place amidst... read more
WINNER OF THE "BEST ANTHOLOGY FOR 2018" AWARD IN THE REDDIT/R/FANTASY 'STABBY' AWARDS!"War, my friend, is a thing of beauty." How do you get forty fantasy authors to contribute short stories for a war-themed anthology without paying them? It sounds as if there... read more
King Vanderwall was given two options: Kill the Humans or die. Seventeen years later, his sons now face the same threat... Orian, Prince of the Midland, is sworn to protect his human, but now he must choose: his life or hers. When an irrevocable disease spread... read more
A revised and updated 2nd edition, Kaiju Rising: Age of Monsters is a collection of stories focused on strange creatures in the vein of Pacific Rim, Godzilla, Cloverfield, and more. Opening with a foreword by Jeremy Robinson—author of Project Nemesis, the high... read more

Tim has 106 reviews





Killian P.

Killian P.

Aug, 2022

Tim was very professional and pleasant to work with. I'm new to writing and made quite a few mistakes that I wasn't aware of, and Tim showed me where I needed to improve on in a professional manner. I highly recommend him.
Scott K.

Scott K.

Apr, 2022

I hired Tim in May 2021 with the understanding he would do a detailed edit on my 400 page fiction piece and I was very excited because he writes in the a similar universe as I. Just looking him up on the internet, I was excited. He kept stringing me along. At first, I gave him 4 months before I expected to hear from him. Then November, Then December and monthly from then forward. Finally he adm...
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Bryan W.

Bryan W.

Apr, 2022

I couldn’t be more thrilled with the results I received. Tim’s patience with an aspiring author is commendable. Tim went well above and beyond what was expected. My writing improved as a direct product of his correction. I really appreciate the time and effort Tim put into working on my manuscript. My only wish would be for for a higher rating to bestow. Thank you, sir. You are truly an inspi...
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Alan P.

Alan P.

Mar, 2022

Tim provided excellent editing for my first novel. The timeline stretched out further than expected, but the work was of high quality. I did have to go through and do another edit to catch a few small items, but Tim definitely helped make the story a much more professional manuscript.
Chris C.

Chris C.

Feb, 2022

As a first-time author, Tim provided much-needed help with editing.

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