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Firesight Studios

Justin Zimmerman & Julius Hubbard,
Co-Founders
Chattanooga, United States

Firesight Studios co-founders Justin Zimmerman and Julius Hubbard, both Chattanooga firefighters, working on their mobile games.

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2026

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How two Chattanooga firefighters swapped fire trucks for the Google Play Store

In 2016, Chattanooga firefighters and best friends Justin Zimmerman and Julius Hubbard met at the same station, and stumbled upon the fact that they shared a dream: to tell stories through games. It took them until 2024 to launch Firesight Studios, the developer behind such titles as Palette Splash and Word Mayhem, all offered for free thanks to an ad-supported business model.

From the firehouse…

Julius Hubbard has been a Chattanooga firefighter since 2004. He's also a painter. A muralist. The guy who designs the fire department's t-shirts. Essentially, he’s a jack (or rather a Julius) of all trades.

Not only that, but he’s managed to build quite a reputation for himself, much of it through his design company, Gusto Art. The marquee of his portfolio: a towering mural for the city’s utility company EPB, just around the corner from City Hall.

As for his co-founder, best friend, and cheerleader-in-chief Justin Zimmerman, well, his path into software development wasn’t as straightforward. He got into masonry first, construction next, and then some more blue-collar work followed that.

But then, in 2012, he enrolled himself in a local college's new cybersecurity program, switched over to computer science, and ended up finding what most folks spend a lifetime looking for: the thing you wake up for every day.

And when he says “every day,” he means it. In fact, he hasn’t missed a single day of coding in the 14 years since. That's over 5,000 days in a row if anyone’s counting.

As if that weren’t enough, he still had enough in the tank for a second calling. So, in 2016, Justin joined the rank and file of his local fire department, bringing him right into Julius’s orbit.

What happened from there is what you might expect when an unstoppable developer collides with an immovable artist, literally: Justin was sent across town to fill in for a staff shortage at Julius's station.

Julius's reputation preceded him, of course. After all, who didn’t know the guy who'd designed all the t-shirts. Justin even had his opening line ready: “have you ever thought about doing software development?"

The line did not land, at least not at first. Julius brushed him off.

But Justin was tenacious. He kept at Julius, until somewhere along the line, they managed to touch on a shared dream: to tell stories. And to turn those stories into games.

So, it was decided. The two would become partners. Julius would do the art; Justin would code.

But the two took their time. They’d spend years honing their respective crafts together, building pilot apps for local businesses here and there, before finally in 2024, they made things official: Firesight Studios.

The name ended up capturing their whole story in one breath: “fire" for the service that brought them together; “sight" for the creative vision.

And the team's synergy only grew when they met sound engineer Michael Sutherland. His addition to the studio felt like "another Julius meets Justin moment," bringing a musical quality and character that perfectly aligned with their vision.

Their first title out the door: Palette Splash, a color-blending match game inspired by Julius's own daughters, while he watched them learn color theory. They marketed it entirely themselves too, with roughly $5,000 from Julius's brother Nathan, nearly all of it spent on Google Ads campaigns.

Then for an encore: Word Mayhem, a real-time multiplayer word search with a vintage cartoon vibe.

But they didn’t stop there: what came next took them on a bit of a detour from games. They went on to co-create a bill-tracking app with AI built in, powered by Gemini, Google's AI model.

…to the Play Store

No matter if it’s a game or utility, one thing’s for sure. Every Firesight product is free.

"Our priority is fun, high-quality games without barriers," Justin exclaims. "An ad-supported model lets us keep everything 100% free and accessible, right out of the gate."

That's because fire service can really give you a different perspective on things.

When your day job means running into burning buildings, saving lives, you tend to appreciate the value of taking a breather every now and then, even if it’s just for a few minutes in your day. Offering that kind of relief to someone else, in the form of a game, and for free, is exactly the kind of thing that Firesight set out to do.

And this is where AdMob enters the picture. In fact, Justin puts it into every app they ship.

"It's just easy," he says, referring to the integration with AdMob. "It's almost autopilot. I set it up once, and then I can focus on everything else an entrepreneur has to do."

And keep in mind: it’s just two folks running all this — the development, the art, the marketing, the books. And oh yes, they also fight fires. To help manage their operations efficiently, the team also relies on the broader Google ecosystem, including Firebase for performance analytics and Gemini AI to assist with debugging and optimizing code.

Palette Splash is a free color-blending puzzle game available on Google Play.
"Our priority is fun, high-quality games without barriers. An ad-supported model lets us keep everything 100% free and accessible, right out of the gate."
  • Julius Hubbard sketches a character design on a drawing tablet.

Justin Zimmerman was recently awarded the Chattanooga Mayoral "Be a Problem Solver" award

The power of partnership (and family)

The duo are clearly doing something right: Firesight has been featured in Google's Economic Impact Report, representing the state of Tennessee.

But their favorite sort of recognition is when it’s local; one might even say, familial.

"We're known around here as firefighters," Julius says. "So our favorite moments are when family and friends first open our games. That shocked look, then… ‘wait, you guys actually made this?!' It never gets old."

And neither founder will take all the credit either.

"We wouldn't be where we are today without the support of our spouses and immediate family at home," Julius says. "We really couldn't do what we're doing right now without their help.”

These days, you can find the best friends spending even more time together, tinkering with how they might improve fire-training simulations, tapping into tech like VR (virtual reality) and XR (extended reality). Think of it as a headset technology that drops you right inside of a scenario; perfect for learning how to face a fire without the actual danger of it.

Justin’s problem-solving spirit has even recently earned him the Chattanooga Mayoral "Be a Problem Solver" award. He developed the Chattanooga Asset Registry & Enterprise (CARE) platform, a custom solution that replaced expensive third-party software. By integrating tailored features like hardware audits and grant tracking, the CARE platform saves the city $100,000 annually, demonstrating the profound impact his technical skills have on the local community.

For other indie developers, Justin's advice is simple: "Do something that you love, keep going, and don't be afraid to put yourself out there. And find yourself a Julius.”

To which Julius smiles: "And find yourself a Justin."

About the Publisher

Justin Zimmerman and Julius Hubbard are the co-founders of Firesight Studios, an indie game studio based out of Chattanooga, Tennessee. Justin, the programmer of the two, who hasn't missed a day of coding in the last 14 years, handles everything coding. Julius, a painter and muralist who's been the fire department’s unofficial designer in residence, handles everything visual. Both came to game development through the fire service, and both are still public servants today.
Inside Firesight Studios in Chattanooga, Tennessee, where Justin Zimmerman and Julius Hubbard design, code, and ship their games.

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