Nuclear Shielding and Criticality Engineer-Remote opportunity Job at System One, Washington DC

czNRVm9MNGRpTGVmT2RPK0dDdVZsekl5U0E9PQ==
  • System One
  • Washington DC

Job Description

Job Title: Nuclear Shielding and Criticality Engineer (Remote)

Location: Remote (U.S.-based)

Employment Type: Contract 

Company: System One

System One is actively seeking a highly skilled and motivated Nuclear Shielding and Criticality Engineer for a remote contract position supporting advanced nuclear technology projects. This is an excellent opportunity for experienced engineers who thrive in autonomous, high-impact technical environments.

About the Role:

As a Nuclear Shielding and Criticality Engineer, you will be responsible for radiation transport and criticality safety analysis using MCNP 6.2 . The scope includes shielding calculations, energy deposition, neutron fluence, activation studies, and development of upper subcritical limits. You will support safety, licensing, and design efforts in accordance with high-quality nuclear standards, including NQA-1 .

Responsibilities:

  • Perform shielding and radiation transport analysis for advanced nuclear systems.

  • Calculate dose rates, activation rates, neutron fluence, and energy deposition.

  • Conduct material activation analyses to develop radiation sources.

  • Perform nuclear criticality safety evaluations and define Upper Subcritical Limits (USLs).

  • Maintain clear, traceable, and auditable documentation aligned with QA requirements.

  • Collaborate remotely with multidisciplinary teams and contribute to evolving technical needs.

Required Qualifications:

  • B.S. in Nuclear Engineering with 5–20 years of experience, or

  • M.S. with 3–15 years, or Ph.D. with 2–10 years of experience.

  • Expert-level MCNP user with demonstrated radiation shielding analysis experience.

  • Proficient with MCNP variance reduction techniques (mesh tallies, weight windows, surface sources).

  • Strong communication and documentation skills.

  • Experience working within NQA-1 or equivalent QA frameworks.

Preferred Qualifications:

  • Familiarity with ADVANTG for weight window generation.

  • Experience with criticality safety methods and regulations.

  • Exposure to fast reactor physics and design is a plus.

  • Familiarity with Attila/Attila4MC , CAD tools (e.g., SolidWorks, SpaceClaim/ANSYS, Cubit).

  • Programming experience in Python or other scientific languages.

  • Ability to quickly learn and apply nuclear design concepts in support of project goals.

Ref: #161-Managed Staffing Charlotte

Job Tags

Contract work, Remote job,

Similar Jobs

Eataly North America

Culinary Operations Specialist (Kitchen Specialist) - Eataly Corporate Job at Eataly North America

 ...procedures across Eataly North America. This individual will collaborate cross-functionally with Vice President of Quick Service, Corporate Kitchen Manager, Product, and Store Teams to ensure culinary excellence, consistency, and cost-efficiency across all Quick Service... 

Queen City Promotions

Entry Level Fundraiser Job at Queen City Promotions

 ...Join Our Team as a Fundraiser & Make an Impact! Outgoing? Love meeting new people? Want to make a difference? Were looking forenergetic, social, and motivated individualsto join our team as Entry LevelFundraisers!If youre thelife of the partyand thrive... 

Lunde Auto Center

Detailer / Car Washer Job at Lunde Auto Center

We are currently seeking Automotive Detailers to join our growing team. We offer a clean and safe environment. Come be part of a team determined to be the best! At Mazda & Kia of Fargo, we strive to make every customer a customer for life. Happy employees make happy customers... 

Abrilaire HVAC Service, INC.

HVAC Service Technician Job at Abrilaire HVAC Service, INC.

Abrilaire HVAC Service, is a fast-growing, family-owned HVAC company and we are looking for confident, motivated technicians. Minimum of 5 years experience is required. Responsibilities would be installing and servicing gas furnaces, central air conditioning, Rooftop Units... 

Sanofi (US)

Global Regulatory Affairs Device Head, Specialty Care Device and Combination Products (Sr. Director) Job at Sanofi (US)

 ...Head, Specialty Care Device and Combination Products will lead a team responsible for device regulatory activities associated with Sanofis combination product and medical device portfolio in the Specialty Care R&D and commercial product ranges. The team is comprised of...