Senior Neutronics Engineer — Isotope Production & Physics

Oklo Inc; Santa Clara (CA); On-site; USD 130,000 - 220,000; Full time

Job summary

Oklo Inc. is seeking a Senior Neutronics Engineer to support isotope production reactor design, safety evaluation, and optimization.

You will perform core analyses, develop computational models, and ensure traceable results through collaboration with multiple teams. Responsibilities include reactor core design, depletion analyses, shielding considerations, and uncertainty quantification using MCNP, Serpent, SCALE, TSUNAMI, and SAMPLER.

Qualifications

• Experience in reactor design and analysis.
• Masters or PhD preferable in a technical field such as nuclear engineering.
• Fluency with Python and HPC systems.
• Proficiency with MCNP, SERPENT, SCALE (TRITON, KENO, SAMPLER, TSUNAMI, MAVRIC).

Responsibilities

• Perform reactor core design and optimization using Monte Carlo and deterministic methods.
• Develop and execute models with MCNP, Serpent, and SCALE.
• Conduct depletion, burnup, reactivity evolution, and cycle optimization analyses.
• Evaluate core physics parameters and safety margins.
• Design irradiation targets to meet isotope yield and power limits.
• Develop source terms for shielding and isotope processing evaluations.
• Apply sensitivity and uncertainty methods to quantify uncertainties.
• Document methods, results, uncertainties, and limitations clearly.

Skills

Python

Reactor design

High performance computing

Technical writing

Team collaboration

Education

Nuclear engineering degree (Bachelors/Masters/PhD)

Tools

MCNP

SERPENT

SCALE

TRITON

KENO

SAMPLER

TSUNAMI

MAVRIC

OpenMC

Job description

Oklo Inc. is seeking a Senior Neutronics Engineer to support isotope production reactor design, safety evaluation, and optimization.

You will perform core analyses, develop computational models, and ensure traceable results through collaboration with multiple teams. Responsibilities include reactor core design, depletion analyses, shielding considerations, and uncertainty quantification using MCNP, Serpent, SCALE, TSUNAMI, and SAMPLER.