TYLin is a globally recognized, full-service infrastructure consulting firm committed to providing innovative, cost-effective, constructible designs for the global infrastructure market. With over 3,000 employees throughout the Americas, Asia, and Europe, the firm provides support on projects of varying size and complexity. Together, we enhance conventional designs with smarter, more resilient systems. We provide people with better mobility. We steward precious resources by finding more sustainable solutions. JOB SUMMARY TYLin’s Rail + Transit team is growing, and we are seeking a Senior Mechanical Engineer to support the design of high-performance mechanical systems for some of the most complex transit infrastructure projects in the country. This role is ideal for an experienced mechanical engineer who takes pride in technical excellence, enjoys solving challenging design problems, and is motivated by the opportunity to shape modern transit environments. This position will focus on the design of HVAC, tunnel ventilation, smoke control, and vertical transportation systems (including elevators) for MTA stations, tunnels, and transit facilities. While the role is centered on projects in the New York region, there is potential for future growth supporting transit programs in other markets across the U.S. 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 for buildings, 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. Why TYLin? 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.   ADDITIONAL INFORMATION 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.