Position Title: Tunnel Ventilation System Lead Reports To: Senior Project Manager\Director of Engineering Location: Sydney, Australia Full relocation: YES SENER is an independent engineering & design firm established in 1956, today SENER employs 4000 people globally. Our mission is to serve our clients and society by providing advanced, accurate and effective engineering solutions that improve our clients’ businesses and facilitate society’s access to competitive, safe, sustainable, and state-of-the-art services, equipment, and utilities. Expanding our presence in Canada and globally, SENER aspires to incorporate people with the greatest talent and vocation, guiding their human and professional development through growing responsibilities and challenges. We believe in our professionals and support their performance, offering an environment with sufficient freedom to motivate individual initiatives that add value to our operations and improve SENER. We trust the best to lead, avoiding any discrimination and demanding not only professional aptitude and results but also exemplary conduct, teamwork, dedication, and commitment. At this time SENER is looking for a Tunnel Ventilation System Lead to join our team in Sydney, Australia. SENER would relocate the right candidate to Australia for this role. Role Summary: The Subway Tunnel Ventilation Engineer is responsible for the design, analysis, and implementation of ventilation systems for underground transit environments. This role ensures compliance with safety standards and operational efficiency, leveraging advanced simulation tools and local design guidelines. Key Responsibilities: · System Design & Analysis · Develop ventilation solutions for subway stations, tunnels, and emergency scenarios · Perform Computational Fluid Dynamics (CFD) simulations for airflow, smoke control, and thermal comfort · Standards & Compliance · Ensure all designs comply with Toronto Transit Commission (TTC) Design Manuals, NFPA 130, and applicable codes. · Prepare technical documentation, specifications, and drawings. · Project Coordination · Lead ventilation design activities across project phases (concept, detailed design, construction support) · Collaborate with multidisciplinary teams (mechanical, electrical, fire safety). · Safety & Risk Management · Conduct emergency ventilation and smoke management studies · Validate system performance under worst-case conditions using CFD and empirical methods Qualifications: · Education: Bachelor’s or master’s degree in mechanical engineering or related discipline · Experience: Minimum 10-15 years in subway or tunnel ventilation design · Strong Technical Expertise · Must have P Eng designation · 10 plus years of experience working on Rail\LRT projects\Mass transit projects · Proficiency in CFD software (e.g., FDS, ANSYS Fluent) · Strong knowledge of tunnel aerodynamics · Soft Skills: Effective communication, leadership, and problem-solving abilities · Must have familiarity with emergency ventilation strategies and fire life safety systems