About the Job:
This is an exciting opportunity for a CFD Engineer to join the Sustainability & Building Physics team in Dublin, working exclusively on Simstudio CFD projects.
Simstudio is a specialist CFD company based in Zoetermeer, the Netherlands, focusing on airflow, heat transfer, and smoke control studies for data centres, wind engineering, and fire safety. As part of the Ethos group, Simstudio collaborates closely with the Sustainability team in Dublin on international projects across Europe and the Middle East.
In this role, you will be an integral member of both teams — embedded in the Dublin office while working daily with the Simstudio CFD team in the Netherlands. Together, you will deliver advanced CFD simulations that inform the design and optimisation of high-performance, sustainable environments.
The position is hybrid, based in Ireland, with attendance at our Dublin office as determined by project needs.
About you:
* Bachelor's or Master's degree in Mechanical Engineering, Aerospace Engineering, or a closely related field.
* 1–3 years of relevant experience in CFD analysis within building physics, mechanical systems, or similar applications (exceptional graduates will also be considered).
* Strong understanding of fluid dynamics and heat transfer principles.
* Experience with CFD software such as ANSYS Fluent/CFX, Star-CCM+, OpenFOAM, or equivalent.
* Familiarity with FDS (Fire Dynamics Simulator) or 6Sigma/DC Design is an advantage.
* Experience using AutoCAD, Revit, and MS Office for supporting workflows.
* Excellent analytical, organisational, and communication skills.
* Analytical thinker with a structured approach and attention to detail.
* Clear and confident communicator capable of explaining technical results to non-technical audiences.
* Collaborative mindset with the ability to work effectively in international, multi-disciplinary teams.
* Self-motivated and proactive, with enthusiasm for innovation and sustainability.
* Strong sense of ownership and commitment to quality.
Your day-to-day activities:
* Carry out CFD simulations to assess airflow, thermal performance, wind conditions, smoke movement, and environmental comfort.
* Work on advanced CFD projects for data centres, wind engineering, and fire safety applications.
* Translate complex CFD outputs into clear, actionable recommendations for clients, architects, and engineering teams.
* Collaborate closely with both Ethos and Simstudio engineers to integrate CFD findings into overall design strategies.
* Prepare detailed technical reports, visualisations, and presentations for internal and external stakeholders.
* Contribute to the development of modelling methodologies, QA/QC procedures, and R&D initiatives within the joint CFD team.
Why Join Us?
At Ethos, we're dedicated to fostering an environment that encourages both technical excellence and personal wellbeing. As a CFD Engineer, you'll be part of a highly skilled, collaborative team that leverages innovation and simulation to shape more sustainable and efficient designs across diverse projects.
We offer:
* Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance.
* A state-of-the-art office in Charlemont, Dublin 2, designed to promote collaboration, innovation, and wellbeing.
* A culture that values flexibility, learning, and teamwork, with clear progression pathways and support toward professional accreditation.
* Opportunities to work alongside some of the most experienced engineers and CFD specialists in the industry, within a forward-thinking, technology-driven consultancy.
Benefits:
* Flexible working times
* 20 Days holidays up to 25 days
* Pension Scheme
* Working travel out-of-pocket expenses
* Travel tax scheme or bike-to-work scheme
* Regular training/mentoring / further college support
* Support for Chartership
* Subsidised Health Insurance Allowance
* A Professional Subscription Fee paid by the company
* Paid Statutory Leaves
* Healthcare check-ups and flu vaccinations
* Gym / Fitness membership
* Heavily subsidised social committee (5 a side, golf society, climbing club and regular social events)
At Ethos, we offer free Fridays every second Friday as a perk Apply today and take the first step towards a healthier work-life balance
Our vision is to: "Be the company people want to work with, and for"
Our values differentiate and focus us every day to be EPIC - for our people and our customers.