Senior Engineer (Plant Thermal Hydraulics Validations)

Team: Others

Location: Brazil

Commitment: Contract

Workplace Type: remote

Accountabilities

• 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, performance, and limitations.
• Analyze and interpret experimental data from separate-effects and integral test facilities to validate models and address technical gaps.
• Define validation requirements, identify modeling needs, and collaborate with test engineering teams to align experimental programs with simulation objectives.
• Develop and maintain documentation covering validation methodologies, model assumptions, simulation results, and uncertainty analyses for engineering reviews and regulatory submissions.
• Collaborate with multidisciplinary teams supporting plant design, safety analysis, and licensing activities.
• Apply software quality assurance practices, including configuration control, traceability, and documentation standards for engineering models and analysis results.
• Contribute to continuous improvement of modeling approaches, validation processes, and technical workflows.

Requirements

• Bachelor’s degree in Mechanical Engineering, Nuclear Engineering, Chemical Engineering, or a related technical discipline, with 6+ years of relevant experience; advanced degrees may be considered equivalent.
• Demonstrated experience with system-level thermal-hydraulic analysis and code assessment for nuclear systems, advanced reactors, or other complex energy applications.
• Proven experience performing model validation activities, including model-to-test comparisons, validation metric development, and uncertainty quantification.
• Hands-on experience analyzing experimental thermal-hydraulic data, evaluating uncertainties, and comparing results against system-level predictions.
• Experience using system analysis tools such as RELAP5-3D, TRACE, SAS, or equivalent thermal-hydraulic simulation platforms.
• Strong understanding of thermal-fluid behavior, reactor systems, and advanced energy system design considerations.
• Familiarity with software quality assurance (SQA) and NQA-1 quality practices for engineering modeling workflows is highly preferred.
• Strong analytical and problem-solving skills with the ability to manage multiple technical activities simultaneously.
• Excellent technical communication skills, including the ability to clearly document and present complex engineering analyses.

Benefits

• Competitive hourly compensation range of $56–$95 per hour.
• Fully remote work opportunity.
• Opportunity to contribute to advanced reactor and next-generation energy technology initiatives.
• Exposure to multidisciplinary engineering projects involving simulation, testing, safety analysis, and licensing.
• Flexible contract-based work environment supporting complex technical challenges.
• Opportunity to apply and expand expertise in thermal-hydraulics, validation methodologies, and advanced modeling practices.