Jacques "Jack" Leemans

Founder, Technical Director and Software Engineer

Hi, I’m Jacques Leemans, founder and technical director at XGameDev.

I’m a software engineer with more than 20 years of experience across apps, games, backend APIs, and production systems.

As a Certified Unity Expert Programmer with more than 13 years of hands-on Unity and C# experience, I focus on building reliable interactive products for games, simulations, education, and technical workflows.

My work covers the full development lifecycle, from early technical planning through implementation, deployment, optimisation, and long-term support.

I have deep experience with game engines, physics, mathematics, content pipelines, publishing, distribution, and the practical realities of shipping software with client teams.

At XGameDev, my role is to help teams make sound technical decisions, reduce delivery risk, and turn complex interactive product requirements into maintainable software.

Engineering work at XGameDev

The Old as Dirt case study describes our work moving a desktop Unity application to WebGL and building its backend, data tools and release pipeline. Hubub covers a Unity virtual campus with Node.js services and WebRTC communication. These are examples of the client, server and delivery concerns I work across as technical director.

For clients planning a new build or assessing an existing one, I provide technical consulting around architecture, platform choice, performance and release risk. A useful first discussion starts with the decision you need to make and the current build or evidence behind it.