Senior CFD Modeller

Environmental and Building Physics

Europe Region

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MAD0000JH Requisition #

Senior CFD Modeller – Fire & Smoke Modelling

Shape a future with purpose at Arup in Spain

Showcasing Impact at the Computational Fluid Dynamics Team

Arup’s purpose, shared values, and collaborative approach have set us apart for 80 years, guiding how we shape a better world.

We have been present in Spain since 1993 and we have a team of more than 300 engineers, consultants, and qualified technical personnel. We work for clients from the public and private sectors, providing creative and sustainable solutions based on the efficient use of resources.

Join a team that’s making a tangible difference. Our work in computational fluid dynamics is directly contributing to the design and safety of transportation infrastructure and complex buildings, supporting performance-based fire engineering and smoke management strategies through advanced numerical simulations.

The Opportunity

This is your chance to join a team of specialists delivering cutting-edge international projects in the field of fire engineering and CFD. You will lead complex CFD studies related to smoke dispersion for performance-based fire engineering applications, with special focus on ventilation of tunnels and metro/railway stations.

As a senior member of the team, you will lead the delivery of complex CFD projects from proposal through to final reporting, mentor junior engineers, coordinate with specialists from other Arup offices worldwide, and contribute to the continuous improvement of modelling methodologies, workflows, and automation tools. You will also have the opportunity to participate in internal research and development initiatives (Invest in Arup), driving innovation in CFD modelling and contributing to the continuous advancement of our technical capabilities, simulation accuracy, and best-practice methodologies across the global fire engineering community.

As a CFD Consultant at Arup, you will:

Get involved in CFD simulations for a wide variety of projects, carrying out activities such as:

Lead CFD studies for smoke movement and smoke control system design using FDS.

Support performance-based fire engineering designs through advanced numerical simulations

Carry out tunnel ventilation and smoke dispersion analyses for road, rail, and metro infrastructure projects, using both 3D CFD modelling and 1D simulation tools such as IDA Tunnel and SES.

Conduct smoke management and evacuation-related assessments for stations, transport hubs, and complex buildings.

Coordinate technical delivery with multidisciplinary teams and CFD specialists across Arup offices worldwide.

Mentor and support junior engineers in project execution and technical development.

Contribute to the development of new CFD methodologies, best-practice guidance, digital tools and automated workflows.

Does this role inspire you?

We are looking for an experienced CFD professional with a strong background in fire and smoke simulations. Ideally, you'll bring:

At least 5 years of experience in CFD simulations related to fire engineering, smoke movement, tunnel ventilation or smoke control systems.

Strong experience with FDS and PyroSim.

Experience in tunnel and station ventilation modelling using IDA Tunnel and/or SES.

Experience in ventilation design for transit, rail, metro, and road tunnel infrastructure in accordance with NFPA 130 and NFPA 502.

Proven experience leading complex CFD projects and coordinating multidisciplinary teams.

Programming knowledge in Python for the automation of CFD pre-processing and post-processing tasks.

Experience using 3D modelling and CAD tools (AutoCAD, Rhino or similar).

High level of spoken and written English and Spanish.

We recognize that no candidate will meet every requirement. If this role excites you and you believe you have the relevant experience, we encourage you to apply.

Bonus points:

Experience with OpenFOAM or other advanced CFD software.

Knowledge of Linux-based computational environments.

Knowledge about the use of Linux servers.

How to apply for this vacancy?

To apply for this vacancy, register your updated CV, and a cover letter in English.

Why Arup?

At Arup, we offer a rewarding career with a global company committed to a better future. Our unique trust ownership structure allows us to prioritize meaningful work and invest in our people. We also offer a unique profit share program, allowing our members to share in the results of our collective efforts.

Benefits that work for you:

Professional Growth & Development: Benefit from continuous learning opportunities, training programs, and mentorship to enhance your skills and advance your career at Arup.

Global Opportunities: Collaborate with colleagues worldwide and explore potential short-term or long-term assignments at other Arup offices and project locations.

Financial Well-being & Ownership: Receive a competitive salary and benefits package and share in Arup's success through our global profit-sharing programme.

Work-Life Balance: We offer a hybrid working model and flexible working arrangements to support work-life balance.

Well-being and Culture: Access to a range of well-being programs, including sports subsidies, social activities, and initiatives promoting a healthy work-life balance. We foster a diverse and inclusive culture where everyone feels welcome, respected, and valued.

Arup is recognized as one of the best companies to work for in Spain in 2024 by Actualidad Económica and Forbes magazine, thanks to our flexibility policies. We also adhere to the Code of Principles of Generational Diversity, committing to equal opportunities regardless of age.

At Arup, you belong to an extraordinary collective where individuality is encouraged. Our strength comes from how we respect, share, and connect our diverse experiences, perspectives, and ideas. You’ll have the opportunity to do socially useful work that has meaning - to Arup, to your career, and to the clients and communities we serve.

We welcome applications from talented individuals of all backgrounds, regardless of age (within legal limits), gender identity or expression, disability, ethnicity, religion, sexual orientation, or any other protected characteristic. We are committed to making our recruitment process and workplaces accessible. If you need any assistance or adjustments, please contact beatriz.estefania@arup.com. We’re here to support you.

Do you want to join us in shaping a better world?