16+ Years Experience • Ex-Ubisoft • 50+ Projects Shipped

Freelance Game Developer & Unity Expert for Hire

Experienced game engineer and full-stack developer building custom games, Unity plugins, and interactive experiences for web, mobile, VR, and console. 16+ years of professional expertise, including AAA pipelines at Ubisoft.

Let's Talk! Projects Unity Assets

Happy Clients

Proven Track Record in Game & Software Development

Trusted by studios, brands, and indie teams worldwide to deliver high-quality digital products on time and on budget.

16+

Years of Professional Game & Software Engineering

50+

Projects Shipped Across Mobile, PC, Console & VR

AAA

Ex-Ubisoft AAA Game Pipelines in Montreal & Lille

Unity

Asset Store Publisher Tools Used by Developers Worldwide

30+

Clients Including Ubisoft, L'Oréal & Meta

Featured Game Development Projects

A selection of shipped games, interactive installations, and VR experiences built for studios, brands, and independent releases reflecting a commitment to quality code, creative gameplay, and cross-platform performance.

Game Development & Unity Services

End-to-end game and software development services from custom Unity plugins to full-stack web applications and immersive VR experiences.

Custom Game Development

From concept to launch I build custom 2D and 3D games for mobile, PC, console, and VR platforms. Whether you need a full game, a prototype, or a gameplay feature, I deliver production-ready code with optimized performance.

Unity Plugins & Asset Store Tools

I design and publish professional Unity plugins that solve real development challenges. From camera controllers and level editors to procedural building systems tools trusted by thousands of Unity developers worldwide.

VR & Interactive Experiences

I create immersive VR applications and interactive installations for brands and events. Past clients include Meta Quest titles, Ubisoft VR projects, and interactive exhibits for L'Oréal and major tech events.

Web & Mobile App Development

Full-stack web and mobile development using React, TypeScript, Laravel, and Node.js. I build scalable applications that integrate seamlessly with game backends, APIs, and real-time systems.

Code Review & Technical Consulting

Code quality improvement, Unity performance optimization, and architecture consulting for your projects. I help teams identify bottlenecks, reduce technical debt, and ship cleaner code faster.

Game Development Training

Unity development and game programming training for students and professionals. Hands-on workshops, code reviews, and one-on-one mentoring to accelerate your team's skill development.

Technology Stack & Development Tools

I work across the full development pipeline from game engines and 3D frameworks to modern web technologies and cloud deployment.

Video Games

Unity

Unreal

React Three Fiber, ThreeJS

PC, Console, Mobile, Web

Web

ReactJS, Vue, jQuery, ThreeJS

PHP, Python, Laravel

SQL, Mongo

Tailwindcss, Bootstrap

Docker

XR

Unity

Meta SDK, OpenXR

WebXR

VR, AR, MR

Mobile

React Native

Ionic

Unity

iOS, Android

Awards & Press

Games for Change Award 2020

Best Learning Game — Rabbids Coding

8/10

Road to VR

Eagle Flight — Ubisoft Montreal VR

7.5/10

Destructoid

Eagle Flight — Ubisoft Montreal VR

BrainStation

O.Zen — Ubisoft biofeedback

MobileSyrup

Rabbids Coding × Libraries Without Borders

VOLTAGE

Magic Massages — La Roche-Posay Foundation

What People Say

Recommendations from colleagues and collaborators on LinkedIn.

I've worked with Anthony on couple of projects and I would recommend him anytime. He can work on both front and back (full stack), and he is reliable to deliver expected results with high level of ambitions. He's also talented on quick iterations of prototypes and proof of concepts.

Mathieu Ferland

Senior Producer & Production Director at Ubisoft

At Floreo, Anthony worked on a high-pressure project with a tight deadline and frequently changing requirements, yet he still maintained the high quality of his code and even found opportunities to improve our codebase and to pass some of his knowledge onto our Engineers.

Sarah Bhandiwad

Senior iOS Engineer

Anthony is one of those rare developers who over-delivers and knows how to adapt to the concrete needs of projects. Each time, he adapted to the existing code, took the initiative to improve weak points that were causing issues, all while staying on time and on budget.

Mathieu Roth

Senior Game Economy Designer

Anthony is a person with great skills and particularly impressive versatility. Resourceful, efficient, authentic, curious and equipped with great emotional intelligence, Anthony inspires confidence when entrusted with a specific mission.

Simon Papineau

Lead Game Designer at Ubisoft

I worked with Anthony for 3 years, particularly on the launch and updates of Rabbids Coding. His professionalism and responsiveness are exemplary. Communication was smooth and straightforward.

Mickael Newton

Co-Founder at Narratify, ex-Ubisoft

With a clear and comprehensive vision of projects, Anthony is an outstanding programmer who will undoubtedly exceed your expectations. I had the chance to work with him on several assignments and he never ceased to impress me.

Felix LeBlanc

Partner & Admin Director at BIP Recherche

Anthony is an excellent developer he is fast, high-performing, and has great interpersonal skills. I really enjoyed working with him.

Antonin Gagelin

Unity Developer

Anthony is not only an extraordinary developer super talented, very dedicated, and passionate about his craft but also a wonderful person to meet. Anthony is a gift!

Sebastien Kochman

Former Manager

Hire a Senior Game Developer

Looking for an experienced Unity developer or full-stack engineer for your next project? Let's discuss how I can help bring your vision to life. Based in the United States & France.

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Frequently Asked Questions

Common questions about Exoa's game development services, Unity expertise, and professional background.

What services does Exoa offer?

Exoa offers custom game development for mobile, PC, console, and VR platforms, Unity plugin development and Asset Store publishing, VR and interactive experience creation, full-stack web and mobile application development, code review and technical consulting, and game development training and mentoring.

Who is Anthony KOZAK?

Anthony KOZAK is a senior full-stack developer and game engineer with over 16 years of professional experience. He is a former Ubisoft developer who worked at both the Montreal and Lille studios, contributing to AAA game pipelines. He is also an active Unity Asset Store publisher with multiple commercial plugins used by developers worldwide.

What platforms does Exoa develop for?

Exoa develops for a wide range of platforms including PC (Windows, Mac, Linux), mobile (iOS, Android), console (PlayStation, Xbox, Nintendo Switch), VR/XR (Meta Quest, OpenXR), and web (React, TypeScript, Node.js). The studio uses Unity and Unreal Engine for game projects and modern web frameworks for web applications.

What Unity assets does Exoa publish?

Exoa publishes professional Unity plugins on the Unity Asset Store, including Touch Camera Pro (mobile and desktop camera controller), Home Designer (real-time interior designer), Floor Plan Designer (procedural room editor), Level Designer (runtime level editor), City Builder (procedural building areas), Tutorial Engine (step-by-step tutorial creator), and more.

What AAA games has Anthony KOZAK worked on?

At Ubisoft, Anthony KOZAK contributed to Eagle Flight, a VR game developed at Ubisoft Montreal where players fly as an eagle over Paris, and Rabbids Coding, an educational application that teaches programming concepts using the Raving Rabbids characters. He also worked on O.Zen, a biofeedback stress management game for iOS and Android.