Engineer - Tunnel Ventilation Systems and FLS
- Full-time
- State/Province: Madrid
- Business Group: DCS
- Legal Entity: AECOM SPAIN DCS S.L.U.
- Business Line: Transportation
- Work Location Model: Hybrid
- Operating Group: Group Support
- Primary Location: ES - Madrid - C/Alfonso XII

Key Responsibilities
- Assist in the development of ventilation models and engineering assessments under the supervision of senior engineers.
- Assist in preparing engineering calculations, ventilation system layouts, mechanical design drawings, equipment sizing, and technical specifications.
- Support the development and review of simulation models for tunnel ventilation and fire scenarios.
- Assist in developing 1D ventilation simulations (SES, IDA Tunnel) and 3D fire and smoke modelling analyses using FDS/PyroSim. Support occupant egress assessments using Pathfinder.
- Coordinate with multidisciplinary teams to support integrated tunnel and station designs.
- Ensure designs and calculations comply with project requirements, applicable codes, and engineering standards.




- Participate in technical meetings, workshops, and internal design reviews.
- Support space proofing activities and equipment access/maintenance studies for TVS components.
- Contribute to technical reports, presentations, and engineering documentation.

Here’s what we’re looking for
- Bachelor's degree in mechanical engineering, Aerospace Engineering, Civil Engineering, Mining Engineering, or a related discipline.
- Additional training in tunnel ventilation, fire safety engineering, or CFD simulation is desirable.
- Suitable for engineers with up to 2 years of experience in a related field.
- Strong interest in tunnel ventilation, fire life safety engineering, fluid dynamics, and simulation-based design.
- Familiarity with SES, IDA Tunnel or equivalent tunnel ventilation simulation software would be beneficial.
- Familiarity with FDS and/or PyroSim is desirable. Experience with ANSYS Fluent or equivalent CFD softwa

📌 Engineer - Tunnel Ventilation Systems and FLS (Madrid)
🏢 AECO
📍 Madrid