Cairn and Stone Studio · Mathieu LagardeSenior Software Engineer / Tech Lead

Real-Time Unreal Engine C++ Systems

Cairn and Stone Studio · Sep 2026 – present

Recent work has focused on Unreal Engine C++ systems for real-time simulation. My responsibilities include software architecture, implementation, technical review, performance, reliability and production tooling.

What I did

I work across architecture and implementation on a production C++ codebase. I own the architectural decisions and review engineering changes. I also work with the design and product side to turn their requirements into maintainable systems.

I build and improve the tooling used to develop and validate the software. Performance, reliability and predictable behaviour are part of that work rather than a separate phase.

Technical proof

  • Architecture

    Ownership of the architecture and technical review across a production C++ codebase.

  • Unreal Engine systems

    Core real-time systems built in Unreal Engine 5 with C++.

  • Simulation architecture

    Real-time simulation systems, from technical design to implementation.

  • Performance

    Engineering work focused on performance, predictable behaviour and reliability.

  • Developer tools

    Tooling that supports development, validation and review workflows.

C++ · Unreal Engine 5

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