Simulation Engineer - 1099 Contract

The role

You will drive performance, architecture, and migration efforts for simulation projects. You will implement gameplay features, Flecs ECS patterns, and optimize simulation performance for large-scale environments.

What you will do

• Identify and migrate under-performing GDScript systems to C++
• Design and implement simulation logic using the Flecs ECS framework
• Profile simulation workloads and identify bottlenecks
• Apply multithreading techniques to optimize frame time
• Develop serialization and state replication systems for distributed simulation
• Collaborate with the team to deliver high-performance solutions

Required qualifications

• Proficiency with Entity Component System architectures
• Solid understanding of linear algebra, physics, and simulation mathematics
• Commitment to writing clean, testable, and efficient code
• Ability to debug complex state issues and optimize performance-critical code paths
• Comfort working across different systems and disciplines within game development
• Strong communication skills
• Proactive and thoughtful approach to identifying and resolving technical challenges
• Enthusiasm for games

Nice to have

• Flecs experience
• GDScript Experience
• Experience with networking, state synchronization, or multi-server architectures
• Advanced knowledge of concurrency, lock-free data structures, and parallel processing
• Experience supporting or mentoring less experienced developers
• Experience working with internal or external partners to gather feedback and provide technical input

About the company

Atomic Theory is a multinational team of seasoned AAA veterans and part of the Rocket Science Group. They have offices in Albany NY, Cardiff UK, and Brighton UK.