Principal Engineer Seismic/CSA Integration & Oversight

Position Title: Principal Engineer Seismic/CSA Integration & Oversight Position Description: Protingent Staffing has an exciting contract Principal Engineer Seismic/CSA Integration & Oversight opportunity. Job Responsibilities:  Provide continuous oversight of seismic design scope, covering building and structural systems, foundations, equipment supports, and integrated plant analyses such as soil–structure interaction (SSI), seismic fragility development, and PRA inputs. Coordinate and direct complex multi-system analyses, including SSI studies, seismic model development, external hazard characterization, and building seismic qualification, ensuring consistency with plant-level methodologies and licensing strategy. Perform and guide SSI analyses using in-house SASSI tools; establish repeatable frameworks, workflows, and benchmarks that improve analysis efficiency and traceability across multiple structures. Develop, document, and implement seismic design bases and strategies, supporting both deterministic and probabilistic methods; apply risk-informed, performance-based methodologies (e.g., LMP, RIPB) to define design acceptance criteria for SSCs. Author, review, and refine plant- and system-level requirements and specifications, integrating seismic and structural criteria into design deliverables and ensuring seamless alignment with plant-level engineering. Interface across design disciplines (mechanical, I&C, nuclear safety, systems) to ensure seismic requirements, structural criteria, and performance expectations are clearly defined, properly allocated, and implemented across interfacing designs. Ensure adherence to licensing and code requirements (ASCE, ACI, AISC, ASCE 4/7/43, NUREG guidance), verifying they are correctly integrated into CSA products and aligned with Company's licensing strategy. Support cost studies and trade-off evaluations as the CSA/seismic SME, ensuring technical rigor while balancing constructability, schedule, and economic considerations. Surveil subcontractor performance, monitoring design deliverables, verifying compliance with technical requirements, and ensuring design processes and quality programs are properly implemented. Lead and support design and integration reviews, chairing cross-functional resolution sessions for CSA/seismic challenges, and facilitating targeted technical forums (e.g., working groups, decision boards, digital/in-person reviews). Integrate seismic and CSA design information into licensing products, including regulatory submittals under the Licensing Modernization Project (LMP), ensuring design-basis alignment with licensing commitments. Report emerging technical risks to project and engineering management, providing timely recommendations for mitigation and escalation when needed. Drive continuous improvement, applying nuclear industry best practices to seismic modeling, fragility methods, and structural qualification, while identifying opportunities for improved efficiency, quality, and integration. Job Qualifications:  Education: M.S. degree in Civil engineering or equivalent or higher 12+ years of civil/structural design and analysis and/or probabilistic risk assessment experience  Excellent writing and communication skills Ability to work independently and with minimum direction to solve challenging problems Candidate must have strong analytical/problem solving skills Candidate must be a self-starter and possess ability to coordinate with internal and external engineering and design teams with minimal direction Experience with new nuclear power plant design projects Experience with risk-Informed performance based, and probabilistic methodologies for application to seismic design and analyses Experience in a broad range of design and integration topics throughout a product lifecycle, including conceptual design, final design, and construction Experience with structural design for complex external hazard loading such as seismic and aircraft impact Experience with commercial codes and standards such as UBC, ACI 318, AISC 360 and ASCE 7 Experience with nuclear codes and standards such as ACI 349, ACI 359, AISC N690, ASCE 4, and ASCE 43 Experience working projects with NRC or DOE regulations Ability to deliver projects that include many competing objectives and design constraints, with ability to resolve conflicts between objectives. Ability to work on tasks that require a multi-disciplinary approach. Experience working to quality standards on design activities, such as ASME NQA-1 or ISO 9001. The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect and a desire to foster teamwork. Job Details: Contract Pay Rate Range: $69 - $115 *Pay rates are approved based on candidate location, education and experience* Location: 100% REMOTE or Bellevue, WA Travel Required: 0-10% Export control regulations require candidates to be a U.S. Citizen, U.S. Legal Permanent Resident, or of a protected person status Benefits Package: Protingent offers competitive salaries, insurance plan options (HDHP plan or POS plan), education/certification reimbursement, pre-tax commuter benefits, Paid Time Off (PTO), and an administered 401k plan. #TERRAPro About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies. We’re passionate about making a positive impact by connecting exceptional talent with meaningful opportunities and helping our clients build the future.