Laser Plasma Physicist; AI​/ML

About the Company & Role

Focused Energy is the leading laser-driven fusion company pursuing the most promising path to clean, limitless fusion power. The global company, based in Darmstadt, Germany and the San Francisco Bay Area, has brought together the top scientific and engineering minds using proven technologies to unlock fusion power at commercial scale.

At Focused Energy, we are not only aiming for long‑term game‑changing solutions but are also solving near‑term challenges with global impact. We are developing Source Light, a breakthrough initiative that pioneers compact, laser‑driven radiation sources (LDRS). These dual‑mode sources combine MeV X‑rays and fast neutrons in a single system, enabling real‑time, non‑destructive inspection of complex or shielded materials. Our technology addresses critical challenges across nuclear waste storage, contraband detection, infrastructure inspection, and medical isotope production.

We are a cross‑disciplinary team of laser and plasma physicists, engineers, and AI experts building our first pilot facility in Biblis (Germany). Be part of shaping this deep‑tech venture from the ground up!

Your mission is to directly enhance the performance of our laser‑driven ion source, a core component of the Source Light platform. You will take ownership of a critical research area, bridging the gap between advanced computational modeling and experimental reality. This role is a unique opportunity to drive a project from theoretical concept to hardware implementation, making a direct impact on a technology that is going to redefine multiple industries.

• Use simulations to improve ion acceleration
  :
  Lead the computational effort and improve the laser plasma interaction by controlling the pre‑plasma. Use Particle‑in‑Cell and hydrodynamic simulations to increase laser‑driven ion acceleration.
• Apply Bayesian optimization
  :
  You will then apply machine learning and Bayesian methods to systematically discover the ideal parameters for peak performance.
• Translate Simulation into Reality
  :
  Bridge the gap between theory and application. Translate your simulation findings into hardware specifications. You will work hand‑in‑hand with our engineering team to design and integrate your solutions.
• Implement Intelligent Experimental Control
  :
  Go beyond simulation by integrating your machine‑learning algorithms directly into the experimental setup and drive the system performance.
• Lead your project
  :
  Take full ownership of your research domain, managing the project from end to end. You will set clear goals, define timelines, and communicate results that guide the company's technical roadmap.

Required Qualifications:

• A Master's degree or Ph.D. in Physics, Applied Physics, or a closely related field.
• A minimum of 3 years of experience in the field of high‑power femtosecond lasers and laser‑plasma acceleration.
• Demonstrated experience with high‑performance computing (HPC) environments.
• Proven expertise with PIC and/or hydrodynamic simulation codes (e.g., EPOCH, Smilei, Warp, Hydra, Flash).
• Solid understanding and practical experience with machine learning algorithms and Bayesian optimization.
• Fluency in English, with strong written and verbal communication skills.

• Hands‑on experience in optimizing laser‑plasma interaction to improve particle acceleration.
• Proficiency with ML/AI frameworks like Tensor Flow or PyTorch.
• Excellent project management and organizational skills, with the ability to work independently.

• Innovative Technology & Mission
  :
  Be part of a company working on groundbreaking research in clean energy and scientific discovery.
• Career Development
  :
  We invest in our people. Join an early, growing company at the forefront of new technology, where you’ll have the opportunity to develop and grow your career.
• Collaborative Culture
  :
  Work with great people in a dynamic, international environment with top‑tier scientists, engineers and professionals passionate about solving global challenges.
• Ownership
  :
  Take ownership from day 1 and drive impact by making decisions, solving challenges and shaping the future of our company.
• Your Success is Our…