Company Description
We are seeking a motivated Engineer with interest or initial experience in Tunnel Ventilation Systems (TVS) and/or Computational Fluid Dynamics (CFD).
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. Coordinate with multidisciplinary teams to support integrated tunnel and station designs.
Ensure designs and calculations comply with project requirements, applicable codes, and engineering standards.
Support space proofing activities and equipment access/maintenance studies for TVS components.
Contribute to technical reports, presentations, and engineering documentation.
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.
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.
Experience with ANSYS Fluent or equivalent CFD software would be advantageous.
Familiarity with standards such as NFPA 130, PIARC recommendations, EU Directive 2004/54/EC, or other tunnel fire life safety guidelines would be beneficial.
Basic knowledge of Python, VBA, or other scripting tools would be advantageous.




Proficiency in Microsoft Office (Excel, Word) and basic experience with Revit or CAD.
Professional proficiency in both English and Spanish.
To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.
Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D;, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, adaptable work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.
AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Career Area: Engineering
Work Location Model: Hybrid
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📌 Fire Engineer or Senior Engineer (Madrid)
🏢 Aecom
📍 Madrid