Founded in 2019, Transmutex aims to reinvent nuclear energy/medicine/waste recycling by using an accelerator-driven system (ADS) to optimize the transmutation of long-lived nuclear waste. The innovative combination of particle accelerators and Thorium fuel based on existing long-lived radioactive waste allows to generate energy intrinsically safe and recycle the stockpile of long-lived waste in a proliferation-resistant way.

We are seeking a qualified and skilled reactor physicist to perform core design development for our advanced fast reactor system. Specifically, the job entails performing neutronics and reactor physics calculations and analyses for the subcritical lead-cooled fast reactor. The ideal candidate shall have a minimum of 5 years of relevant experience and a strong track record in neutron transport calculations with demonstrated experience using 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, working collaboratively 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 the start-up cores using Monte Carlo and deterministic codes

Implementation of multi-batch reloading and reshuffling scheme to optimize core performance and fuel utilization.

Perform 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 (fuel, safety, and software)and external collaborators for design optimization.

Contribute to licensing documentation, ensuring compliance with neutronics-related regulatory requirements.

Requirements

- Minimum Bachelor degree in Nuclear Engineering, Physics, or a related field (master’s or Ph.D. strongly preferred).

- 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.

Additionally, it will be an advantage if you have:

- High performance computing, and computer programming skills in Python, C++, or other relevant programming languages for tool development and automation.

- Experience in fuel cycle analysis and optimization

- Experience in uncertainty quantification and dynamic neutronics simulation techniques

- Proficiency in French, German or Italian

Terms And Conditions

Start date: As soon as possible

Location: Vernier, GE, Switzerland

Contract: Full-time, permanent employment contract

Package: We offer competitive remuneration and social security, accident/disability insurance and pension plans; one day per week work from home, as well as five weeks paid vacation.

Recruitment process:

One to two technical interview.s with the Hiring manager and other Transmutex team members; Interview with HR for retained candidates, final interview with Management for shortlisted candidates.