Mechanical Engineer (Tunnel Ventilation) (f/m/d)

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Riyadh, Kingdom of Saudi Arabia
Entry date: immediately
Still accepting applications
Full Time (Fixed Term)
Job-Ref.: 566570
DB Engineering & Consulting GmbH
Civil engineering and architecture
Academic Professionals

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DB Engineering & Consulting is a part of the DB group, a world-leading global railway company with an extensive organization in Germany and projects around the world. Our company offers technically sophisticated and customized infrastructure, mobility and transport solutions. With our sustainable concepts, gained from our experience in project work for decades, we ensure the future success of economic regions, make important contributions to the protection of the environment and help shape the world of the future. We represent 180 years of rail experience, and our infrastructure projects connect continents. We set the standard for transportation and modern mobility.

For Saudi Arabia, we are looking for a passionate Mechanical Engineer (Tunnel Ventilation) (m/f/d).

Responsibilities:

Review and validate all tunnel ventilation designs, calculations, simulations, and associated mechanical system documentation to ensure compliance with the D&B Contract, NFPA 130, and Employer Requirements.
Oversee installation and commissioning of tunnel ventilation systems, including fans, ducts, dampers, control logic, sensors, ventilation shafts, and smoke extraction systems.
Verify ventilation zone configuration, ensuring that emergency scenarios can accommodate one train per direction within each zone in accordance with system requirements.
Participate in inspections, NCR management, quality oversight, and verification of corrective actions to ensure mechanical system compliance and construction quality.
Support testing & commissioning activities, including functional tests, integration tests, fire/life‑safety tests, and emergency ventilation scenario validation.
Coordinate tunnel ventilation interfaces with fire protection, SCADA, signalling/ATC, power systems, evacuation shafts, and station HVAC systems to ensure seamless integration.
Review operational and maintenance documentation—including O&M manuals, method statements, control philosophies, and as‑built documentation—for technical accuracy.
Prepare technical reports, ventilation system assessments, compliance updates, and commissioning progress documentation for Employer review as part of PMCM reporting.

Qualifications:

Bachelor’s degree in Mechanical Engineering or a related discipline, with 12+ years of experience in tunnel ventilation or rail/metro mechanical systems
Strong experience in mechanical ventilation, smoke management, tunnel ventilation design, and fire/life‑safety engineering for metro or large‑scale infrastructure projects.
Deep understanding of NFPA 130 requirements, ventilation zone strategies, evacuation criteria, and emergency ventilation behaviour.
Proven ability to review mechanical designs, CFD simulations, control logic, mechanical schematics, and commissioning deliverables.
Familiarity with RAMS requirements, maintainability considerations, and system availability expectations for mechanical safety systems.
Strong analytical and problem‑solving skills to evaluate ventilation performance, diagnose issues, and propose engineering solutions.
Excellent coordination and communication skills for effective engagement with PMCM teams, D&B Contractors, O&M Entities, and Employer stakeholders.
High level of professionalism, safety awareness, and adaptability suitable for a complex multi‑system metro megaproject.

Our offer

Professional onboarding and development

We invest in the development of our employees. To ensure the best start for you, we provide a global onboarding program and intercultural training and support you in preparing for the next career step.
Attractive employment conditions

We offer you attractive working conditions and a competitive compensation package based on country conditions.
Mobilization & relocation support

To ensure a smooth and successful start for your international employment, we assist you with relocation and immigration.
Work safety

Our international security support ensures safe working conditions worldwide and provides you with relevant information for a safe living around the globe.
International career opportunities

We offer attractive career opportunities - worldwide. With a work environment that encourages growth and creativity, you will work on complex and innovative projects in international teams on all continents and bring markets and people together.
Intercultural teams

With more than 5,000 employees from over 80 countries across all engineering disciplines worldwide, we are shaping railways for the world of tomorrow. A strong team spirit, intercultural mindset and engagement are essential parts of our success.