CFD Analyst

About the Company

At Valar Atomics, we're redefining what's possible in energy. Our mission is to make clean, high-temperature nuclear power scalable—unlocking abundant energy for industry, hydrogen, and next-generation manufacturing.

Responsibilities

• Develop and validate CFD models for nuclear reactor systems, including thermal-hydraulic and fluid dynamics simulations
• Perform geometry pre-processing, mesh generation, turbulence modeling, and multiphase flow analysis
• Integrate CFD results with experimental data and system-level models
• Leverage AWS or other cloud platforms for large-scale simulations
• Collaborate with cross-functional teams to define CFD requirements and incorporate insights into design and testing processes
• Prepare and present technical reports and visualizations to stakeholders

Requirements

• Bachelor's or Master's Degree in Mechanical Engineering, Nuclear Engineering, Aerospace Engineering, or a related field
• 3+ years of experience in CFD modeling and simulation
• Proficiency in ANSYS Fluent or similar CFD tools
• Solid understanding of heat transfer, fluid mechanics, and numerical methods
• Experience in performing thermal-fluid analysis, turbulence modeling, and simulation optimization

Preferred Qualifications

• Experience with cloud-based simulation workflows (e.g., AWS)
• Familiarity with model-based systems engineering (MBSE) principles
• Knowledge of nuclear industry safety protocols and regulatory requirements
• Previous experience in the nuclear industry and familiarity with High Temperature Gas Cooled Reactors (HTGRs)
• Experience with multi-physics simulations such as conjugate heat transfer, radiation, or fluid–structure interaction

Benefits

• Competitive base salary
• Equity ownership
• Comprehensive medical benefits
• Free daily lunch and dinner provided onsite
• High-impact startup environment with significant ownership and autonomy