SimulationEngineer

Please note that this is a hybrid position with a mixture of in-office (required) and home-based working (optional). While we welcome all applications, this role does not offer relocation assistance. We encourage applications from candidates who are local to New York State or are able to relocate independently. Part of the Rocket Science Group, Atomic Theory is a multinational team of seasoned AAA veterans with roots extending from Blizzard, PUBG, Epic, and Unity. We have a track record of delivering player-centric, AAA-quality experiences, and we're unwavering in our commitment to performance, accessibility, and the engineering frameworks that underpin exceptional gameplay. Atomic Theory is more than just a studio — it's a collaborative space where diverse experiences intersect to solve the toughest challenges in modern game development. With offices in Albany NY, Cardiff UK, and Brighton UK, we thrive at the opportunity to Get Sh!t Done on a global scale. ABOUT THE ROLE: We are seeking a C++ / Simulation Engineer to drive the performance, architecture, and migration efforts of our simulation projects. In this role, you will migrate existing systems to C++, implement Flecs ECS patterns, and optimize simulation performance to support large-scale, multi-server environments. You will be responsible for the core simulation logic that powers our partners’ interactive experiences. An ideal candidate is passionate about games, enjoys tackling a wide range of technical challenges, and has a track record of delivering great player and customer experiences across different areas of game development. WHAT YOU’LL DO: - C++ Migration: Identify and migrate under-performing GDScript systems to C++ for improved performance and maintainability. - ECS Implementation: Design and implement simulation logic using the Flecs ECS framework, ensuring efficient data locality and scalability. - Performance Optimization: Profile simulation workloads, identify bottlenecks, and apply multithrea