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Department: CFD Research & Development

We are seeking a Lead Software Engineer to join our R&D team to support large-scale, high-fidelity simulation of multiphase turbulent flows. This position involves developing parallel simulation codes, implementing advanced numerical methods, and validating models for liquid spray and atomization. You will work on challenging problems in computational fluid dynamics (CFD) and contribute to innovative solutions in industrial and scientific applications.

Key Responsibilities

• Design and implement simulation software for multiphase flows using concepts from Volume-of-Fluid (VOF) and diffuse interface methods.
• Develop GPU-accelerated numerical algorithms for both incompressible and compressible regimes using an unstructured LES solver.
• Optimize codes for high-performance computing (HPC) environments leveraging C++, MPI, CUDA, and HIP.
• Conduct rigorous numerical analysis to ensure accuracy and stability of simulation codes.
• Validate models against experimental data, particularly for spray dynamics.
• Contribute to research in physics-based subgrid-scale modeling for interfacial flows.
• Collaborate with cross-functional teams to integrate simulation tools into broader workflows.

Required Qualifications

• PhD in Mechanical Engineering, Aerospace Engineering, Applied Mathematics, or related field. (Summer 2026)
• Proven R&D experience in developing CFD simulation codes for multiphase flows.
• Strong background in multiphase flow, LES, and numerical analysis.
• Proficiency in C++, MPI, and GPU programming (CUDA/HIP).
• Experience with high-performance computing and parallelization techniques.
• Familiarity with compressible flow, combustion modeling, and spray validation.

The annual salary range for California is $114,800 to $213,200. You may also be eligible to receive incentive compensation: bonus, equity, and benefits. Sales positions generally offer a competitive On Target Earnings (OTE) incentive compensation structure. Please note that the salary range is a guideline and compensation may vary based on factors such as qualifications, skill level, competencies and work location. Our benefits programs include: paid vacation and paid holidays, 401(k) plan with employer match, employee stock purchase plan, a variety of medical, dental and vision plan options, and more.

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