Senior Software Engineer (f/m/d)

About Focused EnergyFocused Energy is a pioneering international deep-tech company with locations in Germany and the US, dedicated to commercializing laser-driven nuclear fusion. Our mission is to deliver clean, safe, and virtually limitless energy to the world. As we rapidly scale, we seek talented individuals who thrive on bringing clarity and structure to fast-growing environments.About the RoleAs a Senior Software Engineer, you will be the primary software point of contact for the Laser team and provide technical leadership across software, hardware, and experimental-system interfaces. You will help define the architecture and technology direction for a greenfield laser-software platform while remaining hands-on in developing reliable tools for calibration, operation, human-machine interaction, and experimental data processing.This role offers the opportunity to work across software, hardware, and experimental-system boundaries while contributing to a strong engineering culture within the Darmstadt Software Department. You will help shape technical direction, establish the foundations of a new software platform, and grow toward a broader technical leadership role. The position does not initially include direct people-management responsibility.What You’ll DoAct as the primary software partner for the Laser team and coordinate software activities across laser projects.Provide technical leadership for software initiatives, including planning, technical alignment, risk identification, and coordination with laser physicists, engineers, and systems-integration partners.Help define the architecture, technology choices, development practices, and interfaces for a new laser-software platform in a greenfield environment.Design and implement reliable software for critical laser projects, from system-level interfaces to user-facing applications.Develop and maintain automated calibration software that improves repeatability, reduces manual effort, and supports reliable laser