CFD Solver Developer

About the Role

Flexcompute is seeking an experienced software developer to contribute to a modern Computational Fluid Dynamics simulation software designed for multi-node CPUs and GPUs. This position offers a unique opportunity to explore state-of-the-art CFD and computational geometry algorithms in a production environment.

Key Responsibilities

• Independently implement, test, and document new solver and meshing features.
• Profile and optimize feature implementation to improve speed and scalability on CPUs/GPUs.
• Contribute to a clean and maintainable API for various functionalities.
• Contribute to general source code maintenance and other relevant software development activities (bug fixes, support, etc.).
• Collaborate with teams developing user-interface and scientific visualization tools/technologies.
• Collaborate with Product Management, QA, and Documentation teams to accomplish product milestones.
• Follow sound software engineering practices.
• Make user experience a priority.
• Deliver robust and high-performance simulations for industrial applications.

Requirements & Tech Stack

• Strong background in Fluid Mechanics, Structural Mechanics, Aeroacoustics, Conjugate Heat Transfer, or adjacent fields.
• Knowledge of numerical methods for solving discretized Navier Stokes equations for Incompressible or Compressible Flows.
• Basics of computational geometry and meshing requirements for CFD simulations.
• Proven experience in and contributions to complex CFD solvers.
• C++ for scientific computing and Python (or similar) for scripting.
• Familiar with version control systems such as git and the Linux command line.

Qualifications

• Master degree or PhD in an applicable technical field with 0-3 years of industry experience.

Preferred

• Industry experience with implementation and testing of new features in commercial CFD solvers.
• Prior experience in working collaboratively in a medium-sized distributed development team.
• PhD in Computational Science and Engineering, Mechanical Engineering or Aerospace Engineering.
• Expertise in one or more of the following topics:
• Linear solvers and convergence acceleration of CFD solvers (e.g., Multigrid algorithms).
• Immersed Boundary, Overset, Adaptive Mesh Refinement methods.
• Turbulence modeling and wall-functions (RANS, hybrid RANS-LES).
• Multi-physics simulations: including fluid-structure interaction and conjugate heat transfer.
• Surface and volumetric meshing for CFD.
• Development of scalable, parallel CFD solvers using MPI, OpenMP, or CUDA.