Lead Thermal-Hydraulics Engineer – Nuclear Systems

Airswift; Houston (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

Airswift is seeking a Lead / Principal Thermal-Hydraulics Engineer to lead complex reactor and power conversion analyses in a highly regulated energy environment. The role combines hands-on technical work with leadership across multiple projects and teams.

You will develop CFD and multiphysics models, mentor engineers, and contribute to engineering standards and regulatory documentation in a cutting-edge nuclear energy organization in Houston.

Qualifications

• Bachelor's degree in Mechanical / Nuclear / Chemical Engineering or related field.
• 10+ years of relevant engineering experience in thermal-hydraulics or related disciplines.
• Strong hands-on experience with thermal-hydraulics, thermal-fluids, or related disciplines.
• Demonstrated experience leading complex engineering projects, workstreams, or teams.

Responsibilities

• Lead thermal-hydraulic analyses involving fluid flow, heat transfer, pressure drop, coolant behavior, and system performance.
• Perform and review steady-state and transient analyses for reactor, power conversion, and plant support systems.
• Develop and maintain analytical, computational, CFD, and multiphysics models to support design and decision-making.
• Evaluate thermodynamic performance of advanced energy systems, including helium and supercritical CO2 applications.
• Support verification, validation, benchmarking, uncertainty analysis, and correlation with testing or data.
• Provide technical leadership through design reviews, problem solving, and multidisciplinary collaboration.
• Mentor junior engineers and contribute to development of technical capabilities and standards.
• Support regulatory, licensing, and safety-related documentation in a regulated environment.

Skills

Thermal-Hydraulics

Thermal-Fluids Engineering

Heat Transfer

Thermodynamics

CFD & Computational Modeling

Systems Performance Analysis

Verification & Validation

Regulatory & Licensing Support

Technical Leadership

Nuclear Safety Culture

Education

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Nuclear Engineering

Bachelor's degree in Chemical Engineering

Advanced degree in a relevant engineering discipline

Tools

STAR-CCM+

ANSYS Fluent

OpenFOAM

COMSOL

Job description

Airswift is seeking a Lead / Principal Thermal-Hydraulics Engineer to lead complex reactor and power conversion analyses in a highly regulated energy environment. The role combines hands-on technical work with leadership across multiple projects and teams.

You will develop CFD and multiphysics models, mentor engineers, and contribute to engineering standards and regulatory documentation in a cutting-edge nuclear energy organization in Houston.