Nuclear Shielding & Criticality Engineer - Remote

System One, Inc.; Bellevue (WA); Remote; USD 101,000 - 167,000; Full time

Benefits offered by this job

Paid Holidays

PTO

Job summary

System One, Inc. seeks a Nuclear Shielding and Criticality Engineer in Bellevue, WA for a yearlong contract with remote/offsite work.

The role emphasizes shielding analysis using MCNP 6.2, with responsibilities covering dose rates, activation, neutron fluence, and energy deposition; plus criticality calculations and USL development. Ideal candidates hold a BS/MS/PhD in Nuclear Engineering with strong communication skills and experience in NQA-1 environments.

Qualifications

• BS in Nuclear Engineering with substantial experience (15+ years)
• MS in Nuclear Engineering with significant experience (8+ years)
• PhD in Nuclear Engineering with extensive experience (5+ years)
• Strong MCNP skills and shielding calculations for gammas and neutrons

Responsibilities

• Perform radiation shielding design and analysis for advanced nuclear reactors, including dose rates, activation rates, neutron fluence, and energy deposition rates.
• Develop radiation sources from material activation analysis for non-fuel in-vessel components.
• Perform criticality calculations and develop upper subcritical limits (USLs).
• Establish and maintain formal documentation of analysis results.

Skills

MCNP proficiency

Radiation shielding design

Criticality calculations

Activation analysis

Python programming

Education

BS Nuclear Engineering

MS Nuclear Engineering

PhD Nuclear Engineering

Tools

MCNP 6.2

Attila / Attila4MC

SolidWorks

SpaceClaim

Job description

System One, Inc. seeks a Nuclear Shielding and Criticality Engineer in Bellevue, WA for a yearlong contract with remote/offsite work.

The role emphasizes shielding analysis using MCNP 6.2, with responsibilities covering dose rates, activation, neutron fluence, and energy deposition; plus criticality calculations and USL development. Ideal candidates hold a BS/MS/PhD in Nuclear Engineering with strong communication skills and experience in NQA-1 environments.