Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM Spain Building Engineering team is a highly qualified group of professionals, experts in offering the best solutions to international client’s needs all around the world.

Our team, as part of the continued growth of our business, is looking for an experienced Tunnel Ventilation Specialist who is looking to further develop his/her experience in delivering multi-disciplinary projects as well as client consultancy. These projects span a diverse range of construction sectors including among others, Rail, Highways, Industrial, Healthcare, Leisure, Aviation, Commercial and Defense.

Working within an energetic, diverse and driven team, you will be part of our project delivery, and your contribution will be key to mentoring junior colleagues and managing moderate to large scale projects. 

This position is based in our delightful office in Madrid or Barcelona (Hybrid Remote Model).

The responsibilities of this role include, but are not limited to:

• Prepare engineering calculations for the design.
• Design drawings and specifications of mechanical ventilation systems for tunnels in a diverse range of projects.
• Ensure accuracy of design and contract documents.
• Collaboration with other disciplines and teams within the company.
• Attending relevant meetings as needed.
• Innovative mechanical design and modeling.
• Computerized flow analyses.

• Bachelor's degree in mechanical or equivalent engineering degree.
• Demonstrable and relevant experience in designing Fire protection systems, with focus in tunnel and mechanical ventilation is essential.
• Fluent English and Spanish (spoken and written).
• Intern engineer certificate
• Knowledge of CAD software and tools such as SES, CFD, and FDS programs.
• Familiarity with fans, controls and fire life safety codes and standards (NFPA, AMCA, ASHRAE).
• Familiar with BIM
• Good verbal and written communications skills.
• Self-motivated and experienced in performing calculations.
• Attention to detail and excellent organizational skills.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. 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, flexible 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. Learn more at aecom.com. 

What makes AECOM a great place to work 

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. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.