🚀 Monte Carlo Simulation Physicist

Join to apply for the Monte Carlo Simulation Physicist role at Focused Energy . At Focused Energy, we are developing NeoLyte, a breakthrough initiative that pioneers compact, laser‑driven radiation sources (LDRS) based on high‑power laser technology. 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.

NeoLyte’s technology addresses critical challenges across nuclear waste analysis, contraband detection, infrastructure inspection, and medical isotope production. With its unique combination of resolution, material specificity, and deployment flexibility, LDRS opens up new possibilities far beyond conventional systems.

We bring together a cross‑disciplinary team of laser and plasma physicists, engineers, and AI experts. We are building our first pilot facility in Biblis (Germany), with the goal to reach market readiness and commercial deployment quite soon. Be part of shaping this deep‑tech venture from the ground up!

What you’ll do

• Design and simulate neutron and X‑ray imaging systems using Monte Carlo methods, building digital twins from radiation production to detection.
• Optimize signal‑to‑noise ratios by refining detector configurations and converter materials for high‑quality imaging performance.
• Enhance neutron yield by modeling and improving target‑converter interactions with laser‑driven ion sources.
• Simulate neutron and X‑ray transport through various materials to support material‑specific attenuation studies and reconstruction algorithms.
• Collaborate with physicists, engineers, and software developers to co‑develop imaging reconstruction methods based on simulation insights.
• Conduct radiation safety simulations and contribute to shielding design and safe operating procedures.

Who you are

• At least 4 years of hands‑on experience with Monte Carlo simulation tools such as MCNP, GEANT4, PHITS, or FLUKA.
• A solid understanding of neutron physics and interaction mechanisms, ideally with exposure to neutron imaging applications.
• Experience working with large simulation datasets and developing efficient evaluation workflows.
• Strong coding skills in Python, C++, or a comparable language used in scientific computing.
• Proficiency in English; Germany‑based, ability to travel to Darmstadt (Hessia) on a regular basis.

What we offer

• Innovative technology and mission: cutting‑edge research in clean energy and scientific discovery.
• Career development: early growth company with opportunities to develop and grow your career.
• Collaborative culture: dynamic international environment with top‑tier scientists and engineers.
• Ownership: take ownership from day 1 and drive impact by making decisions, solving challenges, and shaping the future of our company.
• Competitive compensation and company ownership through stock options.
• 30 days of vacation per year.
• Hybrid work setup: freedom to work from office or home.
• Healthy snacks and drinks; subsidized canteen with daily lunch options.
• Retirement plan: 15 % top‑up of private pension contributions.
• State‑of‑the‑art laptop and peripherals; keyboard, mouse, headset provided.
• Regular events to foster team bonding and collaboration.
• Flexible commuting support through NAVIT.
• Wellhub partnership for fitness and wellness across Europe.

Focused Energy is an equal‑opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, marital status, protected veteran status, or disability status. Pursuant to the San Francisco Fair Chance Ordinance, Focused Energy will consider qualified applicants with arrest and conviction records. Compensation offered will be determined by factors such such as location, level, job‑related knowledge, skills, and experience.