Senior Computational Fluid Dynamicist

About The Company

We are a renewable energy and ocean technology company committed to rapidly developing and deploying technologies that will ensure a sustainable future for Earth by unlocking the vast energy potential of its oceans. Our focus is on capturing civilizational levels of ultra-low-cost renewable energy for applications including computing and affordable renewable fuels delivered to shore. The company is a public benefit corporation headquartered in Portland, Oregon, and backed by leading venture capitalists, philanthropic investors, university endowments, and private investment offices.

We operate as an idea meritocracy in which the best ideas change the company’s direction on a regular basis.

We are developing a core technology that will operate in the most extreme marine environments for years at a time without human maintenance or intervention. Advanced computational fluid dynamics (CFD) simulation is essential to our ability to design and refine this technology.

As a Senior Computational Fluid Dynamicist
, you will execute critical components of our CFD modeling and simulation strategy. You will take ownership of the full simulation workflow and play a central role in shaping simulation and process automation methodologies, evaluating and validating the performance of novel marine systems, and mentoring junior engineers. You’ll help us push the boundaries of marine CFD in a highly dynamic, mission-driven environment.

The ideal candidate brings deep technical expertise, exceptional analytical reasoning, and a strong foundation in fundamental physics-based modeling. We’re looking for a hands-on problem solver with experience simulating real-world systems and who thrives in collaborative, fast-evolving teams. We expect you to be especially strong in analysis and to focus on first-principles, fundamental-physics approaches to problem-solving.

• Lead and execute the complete CFD simulation workflow using OpenFOAM, Helyx, and/or Star-CCM+.
• Fully own CAD integration, meshing, simulation, troubleshooting, and post-processing.
• Develop, validate, and refine simulation setups for multi-phase turbulent marine flows involving fluid-structure interaction in complex metocean environments.
• Design and lead verification and validation efforts to ensure simulation accuracy and confidence.
• Contribute to the development of robust process automation pipelines including interconnecting multi-fidelity CFD tools.
• Run simulation workflow on high-performance computing platforms including on-premises and cloud-based HPC systems.
• Collaborate across multidisciplinary teams to translate physical principles into real-world design insights.
• Mentor and support junior engineers and contribute to the development of internal tools, documentation, and best practices.
• Contribute to the strategic direction of the team and influence engineering decision-making with simulation data.

• Legal authorization to work in the United States.
• Ability to work onsite at our offices in Portland, OR.
• Bachelor's Degree in Ocean Engineering, Naval Architecture, Aerospace Engineering, Mechanical Engineering, Physics, or a similar field.
• Strong grounding in marine hydrodynamics, rigid body dynamics, and physics-based modeling.
• Ability to use first-principles and fundamental physics to make judgement calls on what tools are best suited to evaluate unique marine systems.
• Expert-level mastery of RANS-based CFD solvers such as OpenFOAM, Helyx, Star-CCM+.
• Proficient in CAD modeling (e.g., NX, Solid Works, Rhino) and CAD-to-CFD workflows.
• Demonstrated experience running end-to-end CFD simulations, including meshing, convergence studies, and advanced post-processing.
• Proficient in interpreting and visualizing complex CFD datasets.
• Strong background HPC systems from a user perspective including managing large-scale simulations.
• Working knowledge of Linux environments and scripting workflows.
• Confidence working independently to drive projects forward towards completion.
• Strong written and verbal communication skills.

• Experience with simulating multi-phase turbulent marine flows with fluid-structure interaction in OpenFOAM, Helyx, and/or Star-CCM+.
• Master’s or PhD in Ocean Engineering, Naval Architecture, Aerospace Engineering, Mechanical Engineering, Physics, or a similar field.
• 5+ years of industry or research experience in CFD with increasing responsibility.
• Demonstrated experience simulating novel or unconventional marine systems.
• Working knowledge of frequency and time domain BEM solvers.
• Experience in building CFD automation pipelines.
• Experience with Python, C++, Julia, or another similar programming language.
• Experience with physical model testing in wave basins, tow tanks, or other test facilities.
• Experience in startup environments or fast-paced R&D teams; comfortable with ambiguity, proactive in shaping work, and adaptable to change.
• A record of mentorship, knowledge-sharing (seminars, technical…