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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # CFD Software Engineer - **Company:** Siemens AG - **Location:** Hamburg, Germany - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Agile Methodology, Computational Fluid Dynamics, Program Optimization, Computer Simulation, Nvidia CUDA, Python (Programming Language), Scripting, Parallel Computation, Information Technology - **Published:** June 4, 2026 - **Apply:** https://de.indeed.com/viewjob?jk=2bc6064a39cc06e2 ## About the Role Do you have experience in Scripting?, Do you have a Master's degree?, * M.Sc. or Ph.D. degree in mechanical engineering, computational mechanics, computer science, or a comparable physics-based discipline * At least two years of hands-on experience in CFD solver development in a commercial or academic environment * High proficiency in C++ and parallel programming * Excellent English communication skills * Passion for numerical simulation and a drive to find creative solutions for challenging industrial use cases with a focus on customer value * Willingness to work in a close-knit, agile development team Preferred Qualifications * Experience with scripting or scientific programming languages such as Python or Julia * Solid understanding of the Lattice Boltzmann Method (LBM) and its application in CFD * Solid understanding of GPU architectures and experience with the CUDA toolkit ## Description Are you a passionate Software Engineer who enjoys working at the intersection of numerical methods, high-performance computing, and real-world engineering applications? We are searching for a talented CFD Software Engineer to join our solver development team for Simcenter Ultrafluid (formerly Altair ultraFluidX: https://altair.com/altair-cfd-capabilities/#lbm): a small, dynamic, and agile team delivering world-class CFD software to industries including automotive, heavy industry, and consumer electronics. Simcenter Ultrafluid features a native GPU-based implementation of the Lattice Boltzmann Method (LBM), allowing users to run fully transient, high-fidelity aerodynamics and aeroacoustics simulations overnight on a single compute server. The solver is designed to handle complex geometries and demanding industrial use cases, delivering high-fidelity, predictive simulations of real engineering processes, including turbulent flows, thermal transport, and complex geometry handling. If you are seeking a role where you can contribute directly to solver development, algorithm implementation, and GPU acceleration, while translating cutting-edge academic research in numerical methods into a high-performance, easy-to-use software product, and collaborating closely with the whole development team on the advancement of the code and its capabilities, then we'd love to hear from you! Responsibilities * Contribute to the code development of Simcenter Ultrafluid as part of the agile development team * Specify, implement, test, and document new high-quality features of the solver in close collaboration with the other team members * Contribute to performance benchmarking and code optimization in a massively parallel GPU environment, while collaborating with other development teams across HPC, pre/post-processing, and meshing to integrate Simcenter Ultrafluid into the broader Simcenter ecosystem * Collaborate with product management, application specialists, and QA engineers to ensure the solver meets real-world industrial needs * Participate in daily stand-ups as well as regular review, retrospective, and planning meetings ## Related Videos - [Coffee with Developers - Stephen Jones - NVIDIA](https://www.wearedevelopers.com/videos/1303-coffee-with-developers-stephen-jones-nvidia) - [Strange New Worlds: shaping the future of the digital age](https://www.wearedevelopers.com/videos/677-strange-new-worlds-shaping-the-future-of-the-digital-age) - [ShapeShift: Reinventing Agile for a B2B SaaS Scale-Up](https://www.wearedevelopers.com/videos/1655-shapeshift-reinventing-agile-for-a-b2b-saas-scale-up) - [JavaScript? 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