Onsite Nuclear Sensor Engineer for Microreactor Systems

Radiant; El Segundo (CA); On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

Stock options

Medical plan

One Medical membership

Vision coverage

Dental coverage

Flexible PTO

Lunch provided

Job summary

Radiant in El Segundo, CA is seeking a Nuclear Engineer to own sensor and instrumentation solutions for Kaleidos microreactor, including radiation detection and neutron flux monitoring. You will lead instrumentation initiatives in a fast-paced startup, working closely with nuclear and engineering teams to advance reactor safety and performance.

The ideal candidate has 1–2+ years in nuclear engineering with exposure to radiation instrumentation, plus programming in Python or C/C++.

Qualifications

• Bachelor's degree in nuclear engineering or equivalent from an accredited institution.
• 1-2+ years of nuclear engineering industry experience with exposure to radiation detection or instrumentation.
• Experience with radiation transport methods, including MCNP/OpenMC/Serpent.
• Proficient in Python, C++, C#, FORTRAN, or another scientific computing language.
• Basic knowledge of thermal hydraulic principles.
• Self-motivated with strong organizational, written, and oral communication skills.
• Experience working in an engineering organization and developing high-quality work.

Responsibilities

• Ownership of sensor and instrumentation design and analysis for neutron flux and radiation monitoring.
• Detector modeling and verification using radiation transport codes to meet performance requirements.
• Environmental qualification for high-temperature, high-radiation, and accident-condition environments.
• Systems integration with reactor control and DAQ engineers.
• Verification and validation against customer and regulatory requirements.
• Collect requirements and provide feedback to engineers in other functions.
• Other nuclear instrumentation and sensor design/analysis duties as assigned.

Skills

Python

C++

C#

FORTRAN

Education

Bachelor's degree in nuclear engineering or equivalent

Tools

MCNP

OpenMC

Serpent

Job description

Radiant in El Segundo, CA is seeking a Nuclear Engineer to own sensor and instrumentation solutions for Kaleidos microreactor, including radiation detection and neutron flux monitoring. You will lead instrumentation initiatives in a fast-paced startup, working closely with nuclear and engineering teams to advance reactor safety and performance.

The ideal candidate has 1–2+ years in nuclear engineering with exposure to radiation instrumentation, plus programming in Python or C/C++.