Simulation Engineer Intern Jobs in Seattle, WA (NOW HIRING)

Position Title: Senior Engineer, Plant Thermal Hydraulics Validation
Position Description: Protingent Staffing has an exciting contract Senior Engineer, Plant Thermal Hydraulics Validation opportunity.
Job Responsibilities:

• Support verification, validation, and uncertainty quantification activities for plant scale thermal-hydraulic analysis tools.
• Perform system-level steady-state and transient thermal-hydraulic simulations to evaluate model behavior, accuracy, and limitations.
• Interpret and apply experimental data from separate effects and integral test facilities to support model validation and closure of technical gaps.
• Define validation needs, develop test requirements, and collaborate closely with test engineering teams to ensure alignment between model gaps and experimental programs.
• Document V&V methodologies, model assumptions, validation results, and uncertainty analyses for internal design processes and regulatory submittals.
• Collaborate with multidisciplinary teams to support plant design, safety analysis, and licensing workflows.
• Apply and improve company's SQA and NQA1 modeling quality practices and ensure traceability and configuration control of analysis inputs, models, and results.

Job Qualifications:

• Degree in Mechanical, Nuclear, Chemical Engineering, or similar field, with a minimum 6+ years of experience for level 10; advanced-degree equivalencies apply.
• Experience should include system-level thermal hydraulic analysis and code assessment for nuclear or complex energy systems.
• Demonstrated experience in code assessment, including model-to-test comparison, validation metric development, and uncertainty quantification.
• Hands on experience working with experimental thermal hydraulic data, including data analysis, uncertainty evaluation, and comparison against system level predictions.
• Experience with system analysis tools (e.g., RELAP5 3D, TRACE, SAS, or equivalent) applied to plant scale transient and steady-state evaluations.
• Strong foundation in thermal-fluid and reactor system behavior considerations relevant to advanced reactor designs.
• Experience with SQA and NQA 1 quality assurance practices for modeling workflows is highly preferred.
• Strong analytical thinking, clear technical communication, and the ability to manage multiple validation tasks in parallel.

Job Details:

• Job Type: Contract
• Pay Rate Range: $56-$95/hr (Pay rates are approved based on candidate location, education and experience)
• Location: Bellevue, WA or 100% Remote
• 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.
Meet Your Recruiter
Abby Hubbard
I joined Protingent in the Spring of 2021 as a sales intern, transitioning to a full-time Technical Recruiter after graduating from the University of Washington in June 2021. Initially, I focused on supporting our spaceflight clients, later expanding to industries such as sustainable energy and nuclear power. While I've broadened my recruiting scope, I'm still partial to aerospace engineering, especially anything related to propulsion technology.
My recruiting style focuses on individual candidate needs and relationship building. My philosophy is to lead with empathy and integrity. My favorite thing about recruiting is the opportunity to learn something new every day by talking to the most intelligent people/engineers, as well as the potential to impact critical industries at the staffing level.
When I'm not recruiting, I love spending time outdoors - hiking, camping, roller skating, reading in parks, and swimming in Lake Union (when the Seattle weather permits). I also enjoy thrift shops, sewing/up-cycling clothes, and shooting 35mm film.