T.Y. Lin International
T.Y. Lin International (TYLin) is a privately held, San Francisco-based global infrastructure consulting firm with 3,000+ professionals across 16+ countries, providing engineering, planning, and construction management services in Buildings, Transportation, and Water/Waste to government agencies and large private enterprises.
- Company typePrivate
- Founded1954
- HeadquartersSan Francisco, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What T.Y. Lin International does
T.Y. Lin International (TYLin) is a privately held global infrastructure consulting firm headquartered in San Francisco, founded in 1954 by Professor T.Y. Lin. It provides professional engineering, planning, project management, and construction management services across three market sectors — Buildings, Transportation, and Water/Waste — supported by cross-cutting practice areas including Advisory + Planning, City Solutions, Climate + Sustainability, Digital Fusion, Alternative Delivery, and PM+CM. The firm employs 3,000+ professionals across 16+ countries and serves both government agencies (e.g., Chicago Transit Authority, San Jose Water, Citizens Energy Group) and large private enterprises (e.g., PepsiCo, Memorial Sloan Kettering), with a 872-project portfolio spanning signature bridges, transit systems, airports, water treatment plants, and buildings.
The firm generates revenue primarily through project-based professional services contracts, including planning, design, and construction management engagements for transportation, water/waste, and building infrastructure. Pricing is quote-based and negotiated per project, with alternative delivery methods such as design-build and public-private partnerships as a stated differentiator. The company distributes services through direct enterprise engagement with government and private clients, supplemented by industry events, thought leadership content, and digital marketing. Geographic execution is anchored by regional hubs in Singapore (Asia Pacific), London (Europe), Vancouver (North America regional), and Panama City (Latin America).
Growth strategy centers on inorganic capability expansion via acquisitions: Greeley and Hansen (water, December 2022), Architectural Engineers Collaborative (buildings/Texas, August 2023), and Kilborn Consulting (rail/transit, February 2026). Underlying technology consists of traditional engineering methodologies plus Building Information Modeling (BIM) and construction automation; the firm publicly positions "Digital Fusion" — fusing data, emerging technologies, and domain expertise — as a transformation practice, though no proprietary AI/ML products, APIs, or data assets are disclosed.
T.Y. Lin International firmographics
Firmographics- Name
- T.Y. Lin International
- Legal name
- T.Y. Lin International
- Website
- https://tylin.com
- Company type
- Private
- Founded year
- 1954
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- T.Y. Lin International (TYLin) is a privately held, San Francisco-based global infrastructure consulting firm with 3,000+ professionals across 16+ countries, providing engineering, planning, and construction management services in Buildings, Transportation, and Water/Waste to government agencies and large private enterprises.
- Ownership category
- akta.pro rank
T.Y. Lin International industry classification
Industry- Product category
- Infrastructure Engineering Consulting
- NAICS
- Engineering Services (541330), Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)
Keywords
Where T.Y. Lin International is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices7 records
Markets served
T.Y. Lin International business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Engineering and Design Services: Professional engineering consulting services including planning, design, and construction management for infrastructure projects across transportation, water/waste, and buildings sectors. Revenue is generated through project-based contracts with government agencies and private sector clients.
- Project Management and Construction Management: PM+CM services providing oversight, management, and coordination of infrastructure projects from planning through closeout. The firm emphasizes a PM+CM Culture ensuring technical proficiency and commitment to client goals.
Go-to-market motion2 records
Distribution channels2 records
Marketing channels6 records
T.Y. Lin International product offering
Product offeringCore offering
TYLin is a global infrastructure consulting firm that delivers planning, design, project management, and construction management services for buildings, transportation systems (aviation, bridges, ports and marine, rail and transit, roads and highways), and water/waste infrastructure. It serves government agencies, private developers, and terminal operators through project-based engagements, supported by cross-cutting practice areas in advisory and planning, climate and sustainability, digital fusion, and alternative delivery methods such as design-build and public-private partnerships.
Product overview
T.Y. Lin International (TYLin) is a global infrastructure consulting firm offering professional services across multiple integrated market sectors. The firm operates as a unified professional services network organized into distinct market sectors: Buildings (structural engineering, historic preservation, lightweight structures, façade engineering, construction support), Transportation (aviation, bridges, ports and marine, rail and transit, roads and highways), and Water/Waste (drinking water, wastewater, water resources, solid waste, water advisory). These sectors are supported by cross-cutting practice areas including Advisory + Planning, City Solutions, Climate + Sustainability, Digital Fusion, Alternative Delivery, and Project Management + Construction Management. What began in 1954 as a two-person engineering firm has grown into a 3,000+ globally renowned professional services network delivering infrastructure projects throughout the Americas, Asia, and Europe.
Differentiator
Problem solved
Functional benefit
Products and services
- Buildings Sector Services Structural engineering, historic preservation, façade engineering, lightweight structures, architecture and code consulting, and construction support for commercial, cultural, educational, healthcare, government, residential, and science and technology building projects.
- Transportation Sector Services Planning, design, and construction management for aviation facilities, bridges (arch, cable-stayed, suspension, segmental, truss, pedestrian), ports and marine terminals, rail and transit (high-speed, light rail, bus rapid transit, freight), and roads and highways.
- Water / Waste Sector Services
Quantifiable outcome
- 872 projects completed globally across transportation, water/waste, and buildings sectors
- +1 more outcomes
Companies that use T.Y. Lin International
Customer profileNamed customers5 records
Segments10 records
Ideal customer profiles2 records
T.Y. Lin International technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
T.Y. Lin International partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- Kilborn ConsultingcoreStrategic acquisition announced in February 2026 to expand TYLin's rail and transit consulting capabilities. Kilborn Consulting brings expertise in rail and transit business management and operational consulting services.
- Architectural Engineers Collaborative (AEC)coreStructural engineering firm based in Austin, Texas acquired by TYLin in August 2023. The acquisition aimed to expand TYLin's capabilities in the Texas market and integrated AEC into its Buildings Sector in the Americas, providing clients access to broader resources and expertise.
- Greeley and HansencoreChicago-based water infrastructure engineering company acquired by TYLin in December 2022. The acquisition aimed to expand TYLin's water and wastewater capabilities in North America, enhancing its position in the water market in the Americas by leveraging Greeley and Hansen's extensive experience and reputation. Greeley and Hansen has been fully integrated into TYLin and rebranded as TYLin.
- XFactor Bridge BrothersminorPartnership for customized prefabricated pedestrian bridges, offering specialized bridge solutions through a distribution channel partner.
Scale indicators5 records
Recent moves9 records
Expansion highlights6 records
T.Y. Lin International competitors and assessment
Company assessmentBroad incumbents
- AECOM: Global infrastructure consulting firm delivering design, engineering, construction management, and advisory services across transportation, water, buildings, and environment. Directly comparable in service breadth, scale, and public-sector client base, but materially larger and publicly listed.
- WSP Global: Canadian-headquartered global engineering professional services firm with deep transportation, buildings, water, and environment practices. Overlaps with TYLin across nearly every sector and pursues a similar M&A-led growth strategy.
- Jacobs Solutions: Engineering, technical, scientific, and advisory services firm serving critical infrastructure clients in transportation, water, advanced facilities, and national security. Closely comparable to TYLin's PM+CM and advisory practice areas.
Direct peers
- Stantec: Canadian-listed engineering consulting firm with comparable scale (~30,000+ employees) and overlapping practices in water, transportation, buildings, and environmental engineering. Direct peer in mid-market design and infrastructure advisory.
- Arcadis: Global design and consultancy firm with parallel offerings in mobility, resilience, places, and water. Comparable client mix and pursuit of integrated design, advisory, and project management mandates.
- Tetra Tech: Leading consulting and engineering firm specializing in water, environment, and sustainable infrastructure. Direct overlap with TYLin's Water/Waste sector and federal/international development clients.
- HDR Inc. Employee-owned engineering, architecture, and consulting firm with strong transportation, water, and buildings practices. Direct peer in bridge, transit, and water infrastructure design.
- Black & Veatch: Employee-owned infrastructure solutions firm with deep water, power, telecommunications, and federal client relationships. Strongly comparable to TYLin's Water and Alternative Delivery practices.
- Arup: Privately held global engineering and design consultancy known for signature building, bridge, and transportation projects. Direct peer on complex structural engineering mandates and similar brand-led positioning.
- Mott MacDonald: Privately held global engineering, management, and development consultancy with comparable presence in transportation, water, buildings, and advisory. Direct peer in multi-sector infrastructure consulting globally.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
T.Y. Lin International social profiles
Digital presenceT.Y. Lin International financial estimates
Financial estimateRevenue estimate
Valuation estimate
T.Y. Lin International leadership team
Management profileNumber of profiles
Profiles26 records
T.Y. Lin International subsidiaries and ownership
Company hierarchySubsidiaries2 records
T.Y. Lin International funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
T.Y. Lin International M&A and investment
M&A and investmentM&A2 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about T.Y. Lin International
What does T.Y. Lin International do?
TYLin is a global infrastructure consulting firm that delivers planning, design, project management, and construction management services for buildings, transportation systems (aviation, bridges, ports and marine, rail and transit, roads and highways), and water/waste infrastructure. It serves government agencies, private developers, and terminal operators through project-based engagements, supported by cross-cutting practice areas in advisory and planning, climate and sustainability, digital fusion, and alternative delivery methods such as design-build and public-private partnerships.
Is T.Y. Lin International a public or private company?
T.Y. Lin International is a private company. It is classified as unknown and is currently operating.
When was T.Y. Lin International founded?
T.Y. Lin International was founded in 1954. It employs 1,001 to 5,000 people.
Where is T.Y. Lin International based?
T.Y. Lin International is headquartered in San Francisco, United States, in the North America region.
How does T.Y. Lin International make money?
Two revenue lines are on record. Engineering and Design Services are the primary driver. The others are project Management and Construction Management.
Who are T.Y. Lin International's main competitors?
Broad incumbents on record are AECOM, WSP Global and Jacobs Solutions. Direct peers are Stantec, Arcadis, Tetra Tech, HDR Inc., Black & Veatch, Arup and Mott MacDonald.
Does T.Y. Lin International have an API?
No public API is recorded for T.Y. Lin International.
What industry is T.Y. Lin International in?
T.Y. Lin International's product category is Infrastructure Engineering Consulting. Its primary akta.pro industry code is BPAHAIAL, Testing, Inspection, Certification & Commissioning (TICx) Technical Services. Its NAICS code is 541330 and its SIC code is 8711.