14 set - Pisa
Danem People Group
Reactor Physics & Neutronics Engineer — Micro Modular Reactor
Pisa, Italy · Onsite · Permanent · 50-60,000 € + premio
Design the core of a reactor that will actually get built
Most nuclear engineers spend a career optimising someone else's core. This is a chance to define one from a blank sheet.
Our client is a nuclear technology company developing a Micro Modular Reactor — small enough to transport, simple enough to deploy where grid power doesn't reach, and designed to produce both clean electricity and medical and industrial radioisotopes.
They are currently taking the design through the US NRC licensing process, which means the neutronics work you do here doesn't sit in a report. It goes into a licensing submittal, and then into hardware.
Why this role is different:
- Real scope, real ownership. A [team size] engineering team, not a 400-person division. Your core design decisions reach the CTO the same week you make them.
- Licensing-grade work. Your analyses become part of a formal NRC submittal — the highest-rigour environment in the industry,
and a credential that follows you for the rest of your career.
- Two missions in one machine. Carbon-free power and isotope production for cancer diagnostics and treatment.
What you'll own
You'll be the reactor physics authority on the MMR core — from first-principles modelling through to defending your numbers in front of a regulator.
- Core design & optimisation — define and iterate the core configuration, working the trade space between reactivity, thermal limits, cycle length and manufacturability.
- Neutronics analysis — criticality and reactivity coefficients, burnup and depletion, cross-section generation, flux and power distributions.
- Shielding & dose — shielding design, dose rate calculations, and validation of radiation barriers.
- Fuel cycle — fuel management strategy and fuel cycle analysis for a first-of-a-kind core.
- Licensing support — produce the analyses and technical documentation that support
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