Probabilistic Risk Assessment Engineer

Location: Bellevue, WA

Employment type: Long‑term contract

Responsibilities

• Perform Probabilistic Risk Assessment (PRA) and severe accident analysis for the reactor design, ensuring compliance with regulatory standards and internal safety protocols.
• Develop PRA models, including fault trees, event trees, and radiological transport models.
• Coordinate PRA work with deterministic safety analysis and other engineering disciplines to support reactor design and licensing efforts.
• Provide technical guidance on reliability, risk metrics, importance measures, and regulatory compliance to engineering teams and management.
• Participate in PRA peer reviews, hazard analysis, and Phenomena Identification and Ranking Table (PIRT) exercises.
• Develop and maintain documentation of PRA models, analysis results, and technical reports for regulators and internal review.
• Deliver presentations on PRA methods and results to internal management, customers, and regulatory bodies.
• Utilize PRA software such as CAFTA, FRANX, and other tools to perform risk assessments and interpret results.

Requirements

• B.S. or M.S. in nuclear, mechanical, electrical, aerospace engineering, or a related field.
• Five or more years of experience in Probabilistic Risk Assessment.
• Knowledge of PRA principles and familiarity with the ASME/ANS Non‑Light Water PRA standard.
• Experience with PRA software such as CAFTA, FRANX, SAPHIRE, or similar tools.
• Experience with assessment codes such as GOTHIC, MELCOR, RADTRAD is a plus.
• Strong technical writing and communication skills.
• Experience with sodium‑cooled reactors or advanced reactor technologies preferred.
• Fluent in spoken and written English.
• Ability to work effectively in an interdisciplinary team and adhere to safety standards.

System One and its subsidiaries provide outsourced services and workforce solutions across North America.

Benefits

• Medical, dental, and vision coverage.
• Spending accounts and life insurance options.
• Voluntary benefit plans.
• Participation in a 401(k) retirement plan.