Reactor Physics & Neutronics Engineer — Micro Modular Reactor

La preghiamo di verificare di possedere il livello di esperienza e le qualifiche adeguate leggendo la panoramica completa di questa occasione qui sotto.
Pisa, Italy · Onsite · Permanent · 50-60,000 € + bonus

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:

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- 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.

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- 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 the NRC submittal, and engage directly with regulators and reviewers.

- Safety analysis — support risk assessment and failure mode analysis on reactor components alongside the safety team.

- Method & tool development — improve the models, workflows and verification practices the team will rely on for the next decade.

What you'll bring
Essential

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- MSc in Nuclear Engineering, Reactor Physics, or a closely related field.

- Strong grounding in reactor physics — you can explain why a core behaves the way your model says it does.

- Hands-on experience with at least one Monte Carlo or deterministic neutronics code: Serpent, MCNP, SCALE, PARCS, or equivalent.

- Working knowledge of nuclear safety principles and a regulatory framework (NRC, IAEA, or a national equivalent).

- The engineering judgement to know when a result is wrong before the reviewer tells you.

- Clear written English — your documentation will be read by regulators.

Nice to have (genuinely optional)

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- PhD in reactor physics, neutronics, or radiation transport.

- Experience contributing to a licensing submittal or safety case.

- Micro-reactor, SMR, HTGR, molten salt or research-reactor experience.

- Radioisotope production experience.

- Scripting for automation and coupling (Python).

- Italian — useful for working with [the Italian engineering team / partners], not required.

Don't tick every box? Apply anyway. xysqume Deep strength in core design and neutronics matters far more to us than a complete checklist.

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📌 Nuclear Reactor Engineer (Pisa)
🏢 Danem People Group
📍 Pisa