Neutronics Specialist / Neutronics Specialistess

About Transmutex

Founded in 2019, Transmutex aims to reinvent nuclear energy, medicine, and waste recycling by utilizing an accelerator-driven system (ADS) to optimize the transmutation of long-lived nuclear waste. Our innovative approach combines particle accelerators with thorium fuel derived from existing long-lived radioactive waste, enabling us to generate energy that is intrinsically safe while recycling a stockpile of long-lived waste in a proliferation-resistant manner.

Job Opportunity: Reactor Physicist

We are seeking a qualified and skilled reactor physicist to perform core design development for our advanced fast reactor system. This role involves conducting neutronics and reactor physics calculations and analyses for the subcritical lead-cooled fast reactor. The ideal candidate will possess a minimum of 4 years of relevant experience and a strong track record in neutron transport calculations, demonstrating proficiency with well-benchmarked codes for fast reactors such as SERPENT2 and MCNP6. The successful candidate will play a vital role in designing and analyzing the reactor core, collaborating with multicultural and multidisciplinary teams to achieve a safe, efficient, and sustainable core design based on the closed thorium fuel cycle.

Key Responsibilities

• Perform full core characterization of the equilibrium cycle, transition cycles, and start-up cores using Monte Carlo and deterministic codes.
• Implement a multi-batch reloading and reshuffling scheme to optimize core performance and fuel utilization.
• Conduct multi-physics calculations to analyze transient behavior in the reactor.
• Improve and maintain multi-scale reactor physics models for the reactor system.
• Engage with internal teams (fuel, safety, and software) and external collaborators for design optimization.
• Contribute to licensing documentation, ensuring compliance with neutronics-related regulatory requirements.

Requirements

The ideal candidate must have:

• A minimum Bachelor’s degree in Nuclear Engineering, Physics, or a related field (Master’s or Ph.D. strongly preferred).
• At least 5 years of experience in neutronics design and analysis, preferably in fast reactors or ADS systems.
• Proven expertise in working with Monte Carlo codes (SERPENT2, MCNP6) and deterministic codes such as ERANOS.

Desirable Qualifications

Additionally, candidates with the following qualifications will be highly regarded:

• Experience in high-performance computing and programming skills in Python, C++, or other relevant languages for tool development and automation.
• Experience in fuel cycle analysis and optimization.
• Background in uncertainty quantification and dynamic neutronics simulation techniques.
• Proficiency in English is required; a good level of French, German, or Italian is a plus.

To join our innovative team and contribute to the future of nuclear energy, please apply online using the form below. Please note that only applications matching the job profile will be considered.