Nuclear Engineer, Sensors (Radiation Detection)

Location: 100% onsite at the El Segundo, California headquarters, United States

Salary: $115,175–$162,225 annually, plus equity

Company

hirify.global is a startup developing mass-produced, portable nuclear microreactors, including the 1-megawatt Kaleidos reactor for critical power applications.

What you will do

• Own sensor and instrumentation design and analysis for the Kaleidos microreactor.
• Design, specify, and qualify in-core and ex-core detector systems for neutron flux and radiation monitoring.
• Model detector response using radiation transport codes and verify performance requirements.
• Evaluate sensor survivability in high-temperature, high-radiation, and accident-condition environments.
• Integrate sensor outputs with reactor monitoring, protection, control, and data acquisition systems.
• Support instrumentation verification and validation against customer and regulatory requirements.

Requirements

• Bachelor’s degree in nuclear engineering or an equivalent accredited degree.
• 1–2+ years of nuclear engineering industry experience, including exposure to radiation detection or instrumentation.
• Experience with radiation transport methods and codes such as MCNP, OpenMC, or Serpent.
• Proficiency in Python, C++, C#, FORTRAN, or another scientific computing language.
• Basic knowledge of thermal-hydraulic principles and experience producing high-quality engineering work.
• Willingness to work extended hours and weekends as necessary and to work fully onsite.

Nice to have

• Hands-on experience designing, testing, or qualifying sensors in high-temperature or high-radiation environments.
• Experience with DAQ systems, reactor control integration, variance reduction, or high-performance computing.
• Familiarity with CAD tools such as NX, SolidWorks, or SpaceClaim.
• Experience with dose consequence methods and software such as MAACS or NRC-RADTRAN.

Culture & Benefits

• Substantial incentive stock plan for full-time employees.
• Comprehensive medical, vision, dental, life, accident, hospital, critical illness, commuter, and FSA/HSA benefits.
• Eight weeks of paid parental leave for all parents, with additional paid pregnancy leave for California employees.
• Flexible PTO, catered lunch, snacks, drinks, and sponsored One Medical memberships.
• Team events, happy hours, and in-person collaboration at the El Segundo headquarters.