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Principal Engineer, Seismic CSA Integration and Oversight

Job in Bellevue, King County, Washington, 98009, USA
Listing for: System One Holdings, LLC
Full Time position
Listed on 2026-08-28
Job specializations:
  • Engineering
    Structural Engineer, Civil Engineering, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 69 - 115 USD Hourly USD 69.00 115.00 HOUR
Job Description & How to Apply Below

Principal Engineer Seismic/CSA Integration

Compensation: $69.00 - $115.00 per hour Contractor Work Model:
Remote

Responsibilities
  • Support the development of plant level requirements and strategies related to seismic design and licensing activities for advanced nuclear reactor projects.
  • Perform technical reviews of work products, including seismic analysis, soil-structure interaction (SSI) analysis, and probabilistic assessments.
  • Coordinate and direct multi-system analyses, such as SSI studies, external hazard characterization, and seismic qualification of structures and components.
  • Develop, document, and implement seismic design bases and strategies, supporting deterministic and risk-informed methodologies.
  • Interface across various engineering disciplines to ensure seismic and structural requirements are integrated into design deliverables.
  • Ensure compliance with licensing and code requirements including ASCE, AISC, ACI, and NRC or DOE regulations.
  • Support cost studies and trade-off evaluations as the seismic SME, balancing technical rigor with constructability and schedule considerations.
  • Monitor subcontractor performance, verifying adherence to technical and quality standards, and facilitate technical reviews and resolution sessions.
  • Assist in integrating seismic and CSA design information into licensing products, contributing to regulatory submittals.
  • Identify and report technical risks, providing mitigation strategies and escalation recommendations.
  • Drive continuous improvement of seismic modeling, fragility methods, and structural qualification practices.
Requirements
  • M.S. degree in Civil engineering or equivalent relevant field.
  • 12+ years of experience in civil/structural design, analysis, and probabilistic risk assessment.
  • Strong communication and technical writing skills.
  • Ability to work independently and solve complex problems with minimal supervision.
  • Proven ability to coordinate across multidisciplinary teams and manage technical scope.
  • Experience with new nuclear power plant design projects and risk-informed methodologies.
  • Hands-on experience with structural design for external hazards like seismic loads and aircraft impacts.
  • Knowledge of commercial standards such as UBC, ACI 318, AISC 360, and ASCE 7, along with nuclear standards like ACI 349, AISC N690, ASCE 4/43.
  • Experience working with NRC or DOE regulations.
  • Familiarity with quality standards such as NQA-1 or ISO 9001.
  • Excellent analytical, problem-solving, and communication skills.
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