Nuclear Engineer I/II

Antares; Los Angeles (CA); On-site; USD 120,000 - 165,000; Full time

Job summary

Antares is seeking a Nuclear Engineer to join its nuclear engineering team in Los Angeles, California. This role encompasses key responsibilities such as neutronics modeling, support for Multiphysics analyses, and collaboration with senior engineers on design tasks. The ideal candidate should possess a Bachelor's degree in Nuclear Engineering or a related field and should be familiar with neutron transport software.

Competitive salary ranges from $120,000 to $165,000 based on levels I and II, with consideration given to skills, education, and experience.

Qualifications

• Bachelor's degree in Nuclear Engineering or a related technical field required.
• Familiarity with neutron transport software like MCNP, Serpent, or SCALE.
• Proven ability to quickly learn new technical concepts.

Responsibilities

• Assist with neutronics modeling and simulations using MCNP, Serpent, or SCALE.
• Support Multiphysics analyses (thermal-hydraulics, heat transfer, structural mechanics).
• Participate in experimental validation of simulation results.
• Collaborate with senior engineers on iterative design tasks.
• Contribute to documentation and regulatory reporting.
• Participate in hardware demonstrations and prototype testing.

Skills

Neutronics modeling

Thermal-hydraulics

Communication skills

Python

Education

Bachelor's degree in Nuclear Engineering or related field

Tools

MCNP

Serpent

SCALE

Job description

About the Role

As a member of the nuclear engineering team, you will become the responsible engineer for a key component of the Antares reactor design such as reactivity controls and instrumentation, radiation shielding, fuels, materials, thermal hydraulics, safety, or licensing. The ideal candidate has a mix of industry and academic experience, and has worked in a team-oriented environment to mature nuclear concepts. While you may have a specialty, you’re not afraid to operate as a generalist in a growing organization.

Roles and Responsibilities

• Assist with neutronics modeling and simulations using MCNP, Serpent, or SCALE
• Support Multiphysics analyses (thermal-hydraulics, heat transfer, structural mechanics)
• Participate in experimental validation of simulation results
• Collaborate with senior engineers on iterative design tasks
• Contribute to documentation and regulatory reporting
• Participate in hardware demonstrations and prototype testing

Basic Qualifications

• Bachelor's degree in Nuclear Engineering or related technical field
• Familiarity with neutron transport software (MCNP, Serpent, SCALE)

Preferred Skills & Experience

• Familiarity with Python or similar programming language
• Coursework or internships involving Multiphysics modeling
• Interest or experience in microreactors, heat pipe cooled reactors, or other advanced reactors
• Exposure to fast-paced project environments
• Proven ability to quickly learn new technical concepts
• Strong communication skills

Pay Ranges

Nuclear Engineer I: 120k-135k

Nuclear Engineer II: 135k-165k

Your actual level and base salary will be determined on a case‑by‑case basis and may vary based on the following considerations: job‑related knowledge and skills, education, and experience.

Equal Opportunity

Antares is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.

ITAR Requirements

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.