# RefractSystems > Cyber-physical simulation platform that accelerates embedded systems development by enabling a deterministic, "Shift-Left" digital twin architecture. By tightly coupling a instruction-accurate instruction-set emulator (QEMU) for firmware execution with external physical plant models written in Python or Rust, the platform creates an exact replica of edge computing environments. This hardware-software matrix communicates seamlessly via the vfio-user protocol over a UNIX socket to achieve precise Memory Mapped IO (MMIO) and flawless timing synchronization. Ultimately, this enables engineering teams to conduct rigorous Design Space Exploration (DSE)—such as evaluating different microcontrollers like a Cortex-M0 versus an M4F—to optimize compute power, bill of materials costs, and physical AI integration long before committing to physical manufacturing. ## Services - **Cyber-Physical Systems Design**: We help engineering teams architect and design deterministic embedded systems. - **Hardware-in-the-Loop Simulation**: Integrating virtual and physical components for robust testing. - **Digital Twin Architecture**: We specialize in "Shift-Left" digital twins that accelerate firmware development. ## Technology **Firmware Studio**: Our first product and proprietary CI/CD platform. Simulate, test, and deploy firmware updates across heterogeneous fleets with mathematical certainty using a deterministic, Shift-Left digital twin architecture. ## Leadership **Dr. Marcin Szczodrak**, Founder & Chief Architect. Veteran systems architect bridging the gap between cutting-edge AI and industrial hardware. - **Tesla**: Built control systems for Megapack and Powerwall. - **Google X (Intrinsic) & Brain**: Pioneered Industry 4.0 robotics and reinforcement learning. - **Nest**: Shipped critical firmware for the Nest Thermostat. - **Figure AI**: Architected initial software infrastructure. ## Contact Website: https://refractsystems.com Founder: https://marcin.phd