Senior R&D Engineer CFD & Optimization at Diabatix in Technologielaan 11 Vlaanderen, Leuven, 3001 Belgium

Job Description - Senior R&D Engineer CFD & Optimization

We are looking for a motivated and technically strong R&D Engineer to join our development team. In this role, you will work on the research, development, and implementation of advanced CFD- and optimization-based methods that power Diabatix’s generative design technology.

You will collaborate closely with software engineers, application engineers, and product teams to translate cutting-edge research into robust, industrial-grade solutions.

Responsibilities

Your major responsibilities are:

Develop, implement, and validate advanced CFD-based methods for thermal analysis and design optimization.
Contribute to the development of adjoint-based optimization and gradient-driven design workflows.
Work with and extend CFD solvers, preferably OpenFOAM, including model development, solver customization, and performance improvements.
Design and implement optimization algorithms for geometry and system-level design problems.
Collaborate with application and product teams to translate industrial requirements into R&D priorities and technical solutions.
Evaluate, prototype, and integrate AI/ML techniques where relevant, particularly for geometry handling, surrogate modeling, or physics-aware acceleration.
Ensure robustness, accuracy, and scalability of algorithms for real-world industrial use cases.
Participate in code reviews, testing, documentation, and knowledge sharing within the R&D team.
Stay up to date with academic and industrial developments in CFD, optimization, and simulation-driven design.

Qualifications

Master’s degree or PhD in Engineering, Applied Mathematics, Computer Science, or a related technical field.
Strong background in computational fluid dynamics (CFD) and thermal engineering.
Experience with numerical optimization methods; adjoint methods are a strong plus.
Hands-on experience with OpenFOAM development and C++ programming is highly desirable.
Solid understanding of numerical methods, discretization techniques, and solver architectures.
Experience or interest in AI/ML applied to physics-based problems (e.g. surrogate models, physics-informed ML, geometry representations) is a bonus.
Ability to work independently on complex technical problems in a fast-paced R&D environment.
Strong analytical skills and a structured, problem-solving mindset.
Good communication skills and ability to collaborate across disciplines.

Why Join Diabatix?

Work on core R&D challenges at the intersection of physics, optimization, and software.
Contribute directly to the technology behind a commercial, industrial-grade SaaS product.
Collaborate with a highly skilled, multidisciplinary team in a growing scale-up.
Competitive salary and benefits package.
Opportunities for technical growth, learning, and long-term impact.

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Senior R&D Engineer CFD & Optimization

Job Description - Senior R&D Engineer CFD & Optimization

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