People
About
About
Connecting people, places, and ideas
As a global engineering and advisory firm, TYLin plans and designs infrastructure solutions that connect and elevate communities. That means enhancing conventional designs with smarter, more equitable, more resilient systems. Connecting gridlocked populations with better means of mobility. Stewarding precious resources with more sustainable solutions. And solving our client’s unique challenges with innovative and technically advanced approaches.
3,200+
Professionals
Working in partnership with public and private clients to provide solutions to your unique local challenges
65+
Offices
Working without boundaries in unified project teams across North America, Europe, Asia Pacific, and Latin America.
#30
ENR Top 500 Designers
2024 ENR Rankings include:
#20 Top 100 Pure Designers
#10 Transportation
#11 Mass Transit + Rail
#18 Highways
#7 Bridges
Who We Are
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![T.Y. Lin]()
History
The story of TYLin is really the legacy of our founder, engineering legend and namesake, Tung-Yen Lin. His pioneering research in pre-stressed concrete redefined an industry and launched a multinational, multidisciplinary engineering consulting firm that continues to grow and innovate on behalf of our valued clients.
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![I-10 Broadway Curve]()
Mission, Vision & Values
Connection speaks to the essence of what TYLin does and the value we provide. It not only represents how we bring people, places, and ideas together to elevate communities, it's also about a collaborative global alliance that provides you with greater resources and diverse experiences.
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![Berggruen Institute]()
Our Work
As a global engineering firm, we connect clients with our advanced resources, multi-discipline technical expertise, and innovative thinking to deliver smarter, more resilient solutions.
TYLin Group
Together, the TYLin Group brings together a unique offering for our people, our clients, and our delivery.
Architectural Engineers Collaborative, A TYLin Company
With employees operating in offices in Austin and San Antonio, Texas, AEC consistently delivers excellence in service and product, acting in the interest of clients and the built environment.
A Global Alliance
TYLin is the leading brand of a global alliance of consulting and engineering firms with unique and complementary specializations serving the building, transportation, and water sectors.
Together we provide our clients with the resources and reach of a truly global company and the innovative thinking and deep focus of a best-in-class specialty firm. Our alliance enables us to tailor and scale our solutions to our client’s specific needs. Through technical excellence, local knowledge, and future insight we empower positive change in our communities and for our planet.
Landrum & Brown
Today L&B stands as a global firm that has specialized in aviation planning and development for 75 years. Airports and aviation are in their DNA.
Introba
Introba guides clients through digital transformation, sustainable strategies, and systems integration — applying a range of engineering and advisory services across systems, buildings, communities, cities, and regions.
We’re part of something bigger.
TYLin is a member of Sidara's global collaborative of leading designers, engineers, planners, and consultants committed to advancing livability, sustainability, and well-being for all. Sidara is where world-class brands collaborate on quality, innovation, reliability, and delivery with the mission of helping our clients and their communities thrive.
Each Sidara company has its own distinct unique culture and specialty, yet also belongs to something much bigger. Our network of specialists allows us to achieve more for our clients and their communities through a wider range of expertise, and more comprehensive, collective solutions. Through Sidara’s seventeen leading brands, we offer a broad range of highly specialized services— from architecture and design, engineering, and construction management to digital strategy, sustainability consulting, and energy innovation—all under one umbrella.
Being part of Sidara means living and working purposefully, with others doing the same. We celebrate the deep interconnectedness of our work and the people who depend upon us to overcome today's complex challenges.
Wherever we operate in the world, we shape places that unite communities, empower their economies, and inspire a more equitable, seamless, and joyful world. With humanity at our core, we're changing how people live, inspiring global impact, and making room for cultures to shine.
Explore Sidara and learn more about our home for humanity.