🚀 Monte Carlo Simulation Physicist

Focused Energy is developing NeoLyte, a compact, laser-driven radiation source (LDRS) that combines MeV X-rays and fast neutrons in a single system. The platform enables real-time, non‑destructive inspection of materials, including complex or shielded objects, and addresses challenges in nuclear waste analysis, contraband detection, infrastructure inspection, and medical isotope production.

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 with willingness to travel to Darmstadt (Hessia) on a regular basis.

What we offer:

• Innovative Technology & Mission: Be part of a cutting‑edge company working on groundbreaking research in clean energy and scientific discovery.
• Career Development: Early‑stage growth opportunities and the chance to shape the company’s future.
• Collaborative Culture: Work with top‑tier scientists, engineers, and professionals in a dynamic, international environment.
• Ownership: Take ownership from day 1 and drive impact by making decisions, solving challenges, and shaping the future of our company.
• Competitive compensation and stock options, giving you a direct stake in our success.
• 30 days of vacation per year to support work‑life balance.
• Hybrid work setup with flexibility to work from home or in our Darmstadt office.
• Healthy snacks, drinks, and a subsidised canteen with daily lunch options.
• Retirement plan contribution of 15 % on top of monthly contributions for private pension plans.
• Fully equipped laptop, keyboard, mouse, and headset from day 1.
• Regular team events and access to fitness facilities across Europe through Wellhub.
• Flexible commuting support via NAVIT, including public transport tickets, taxis, or car‑sharing options.

Focused Energy is an equal opportunity employer committed to creating an inclusive environment. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, marital status, protected veteran status, or disability status.

We will also consider qualified applicants with arrest and conviction records in accordance with the San Francisco Fair Chance Ordinance.

Compensation will be determined by factors such as location, level, job‑related knowledge, skills, and experience. Certain roles may be eligible for incentive compensation, equity, and benefits.