Senior Mechanical Engineer, Rail + Transit (Design

Responsibilities & Qualifications

What You’ll Do As a Senior Mechanical Engineer, you will play a key role in delivering mechanical design solutions for critical rail and transit infrastructure.

Responsibilities include:

• Support the mechanical design of HVAC, tunnel ventilation, and smoke control systems for underground stations, tunnels, and transit facilities.
• Contribute to the design and coordination of vertical transportation systems, including elevators and accessibility-related infrastructure.
• Prepare contract drawings, specifications, technical reports, and design documentation for multidisciplinary transit projects.
• Perform engineering calculations, equipment sizing, and airflow/system modeling to support safe and efficient designs.
• Apply relevant codes and standards including NFPA, ASHRAE, and local building and transit authority requirements.
• Collaborate closely with architects, structural engineers, electrical teams, and fire/life safety specialists to deliver integrated design solutions.
• Participate in QA/QC reviews and support design excellence throughout project delivery.
• Assist in mentoring and guiding junior engineers, contributing to a culture of learning and technical growth.

What You Bring

• Bachelor’s degree in Mechanical Engineering (Master’s a plus).
• 10+ years of mechanical engineering experience, ideally in rail, transit, tunnels, or complex building systems.
• Strong technical expertise in HVAC and ventilation design, particularly for enclosed or underground environments.
• Exposure to elevator or vertical transportation systems is beneficial.
• Working knowledge of key engineering standards, life safety requirements, and transit-related design criteria.
• Demonstrated ability to produce high-quality design deliverables with strong attention to detail.
• A collaborative mindset and pride in contributing to multidisciplinary engineering teams.
• PE license preferred or in progress.

At TYLin, you’ll contribute to signature rail and transit projects that enhance mobility, accessibility, and safety for millions of riders. You’ll join a supportive, people-first culture that values design excellence, mentorship, and long-term career development. This is an opportunity to grow your expertise within a highly respected Rail + Transit team while working on meaningful infrastructure that shapes the future of our cities.

TYLin is committed to pay equity. As part of that commitment, we have provided the base compensation range of $120,000 - $160,000 annually for this position and local market. We recognize that each candidate brings a unique set of skills, experience, education and competencies to the table that will be reflected in our offer.

TYLin is proud to offer exciting career development opportunities. #LI-Hybrid

TYLin offers a comprehensive total rewards package. Our benefits may include extensive medical, disability and life insurance coverage, continuing education benefits, paid time off, employee assistance program and a retirement savings plan with company matching contributions. We encourage all candidates to explore our total rewards offering.

Collaboration, mission-driven focus, discipline, and leadership skills developed through military service benefit us all. Whether you are a Veteran, Guardsman or Reservist, a Military Spouse or you are planning to transition to civilian life in the near future, we welcome and value your application.

TYLin is an equal opportunity employer, and we prohibit discrimination and harassment of any type as protected by federal, provincial, state or local laws. We celebrate diversity and are committed to creating an inclusive environment for all employees.

The company and its employees are required to comply with all local health authority, legal or lawful client requirements.

Our Global Infrastructure team, including TYLin, Introba, Landrum & Brown form the Infrastructure division of Sidara. Sidara is a leading, privately-owned professional services group with a diverse history and a global presence. Sidara world-class planning, design, engineering, and project management firms are dedicated to achieving our clients’ ambitions and supporting sustainable communities worldwide. The Global Infrastructure division is comprised of 5,000 people operating in 21 countries.