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Mechanical Engineer III - Computational Fluid Dynamics

Computational Fluid Dynamics (CFD) Engineer
Huntsville, AL

Who We Are

Aurex is a mission-focused aerospace and defense company building the next frontier of deterrence. From hypersonics and missile defense to hardened networks and orbital systems, we design, test, and deliver the platforms that turn unproven ideas into battlefield-ready capability.

Born in Huntsville and built for speed, Aurex brings together aerospace veterans, combat-tested operators, and forward-leaning technologists to solve problems that matter—fast. We move from whiteboard to warfighter with precision, clarity, and zero tolerance for fluff.

Job Summary

Aurex is seeking an experienced Computational Fluid Dynamics (CFD) Engineer to perform advanced modeling and simulation supporting aerospace and defense applications. This role will lead CFD analyses involving fluid flow, heat transfer, and multiphase systems and work closely with engineering teams to translate complex physical problems into accurate computational models.

The ideal candidate brings strong expertise in CFD modeling, fluid mechanics, thermodynamics, and simulation tools and can effectively translate analysis results into actionable engineering recommendations.

Key Responsibilities

• Lead CFD simulations involving fluid flow, heat transfer, and multiphase systems using tools such as ANSYS Fluent, CFX, or STAR-CCM+.
• Translate complex physical problems into accurate computational models, including geometry preparation, mesh generation, boundary condition definition, and solver setup.
• Collaborate with design engineers to incorporate CFD analysis and recommendations into CAD models and mechanical designs.
• Validate simulation results using experimental data, wind tunnel testing, or field measurements.
• Evaluate and optimize designs for performance, manufacturability, and compliance with applicable industry standards.
• Document simulation methodologies, results, conclusions, and engineering recommendations in clear technical reports.

Basic Qualifications

• Bachelor's or Master's degree in Mechanical Engineering or a related engineering discipline with a focus on fluid mechanics or thermodynamics.
• 5+ years of relevant engineering experience.
• Hands-on experience with CFD software such as ANSYS Fluent, CFX, STAR-CCM+, or OpenFOAM.
• Strong understanding of turbulence modeling, heat transfer, and boundary conditions.
• Proficiency with CAD tools such as SolidWorks and experience preparing geometry for simulation.
• Ability to analyze and communicate complex simulation results to technical and non-technical audiences.
• Strong analytical and problem-solving skills with excellent attention to detail.

Preferred Qualifications

• Experience supporting aerospace and/or defense applications.
• Experience validating CFD models against experimental, wind tunnel, or field-test data.
• Experience using high-performance computing resources for complex CFD simulations.

How You Will Be Rewarded

The salary range for this role is 118,000 – 140,000 . We offer a comprehensive total rewards approach to compensation, providing incentives and benefits that extend far beyond the base salary. Compensation is determined by the candidate’s work experience, education, training, and relevant skills. We offer a competitive benefits package designed to support our employees' health, well-being, and professional growth.

Job Location:

Huntsville, AL

Aurex is an Equal Opportunity Employer. It prohibits discrimination, retaliation, or any type of harassment on the basis of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, citizenship, immigration status, or any other legally protected status in employment, including in hiring, firing, and recruiting decisions. All applicants must be authorized to work lawfully in the United States for positions at Aurex. There may be limited circumstances in which a law, regulation, executive order, or government contract would require certain citizenship; only in those limited circumstances would Aurex require certain citizenship status to comply with the relevant law, regulation, executive order, or government contract applicable to that position. For all other positions, Aurex does not consider an applicant’s citizenship but only requires that the applicant be authorized to work lawfully in the United States. If a position is one that falls under export control laws and regulations requiring authorization from the U.S. government to access export-controlled items, any hiring is contingent on the applicant passing the export compliance assessment, which is separate from the I-9 process, for that specific position. A background check will be required prior to any hire.

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