T.Y. Lin International

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.

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

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

• Infrastructure engineering consulting
• Structural engineering services
• Transportation infrastructure design
• Water and wastewater engineering
• Construction management services

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. 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.
2. 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

Core 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

Named customers5 records

Segments10 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Kilborn ConsultingcoreStrategic or Co-development Partner · 6 February 2026Strategic 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)coreStrategic or Co-development Partner · 9 August 2023Structural 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 HansencoreStrategic or Co-development Partner · 21 December 2022Chicago-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 BrothersminorChannel Partner/ Reseller/ DistributorPartnership for customized prefabricated pedestrian bridges, offering specialized bridge solutions through a distribution channel partner.

Scale indicators5 records

Recent moves9 records

Expansion highlights6 records

Broad 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

• Xx.com/tyli_group
• YouTubevimeo.com/tylininternational
• Facebookfacebook.com/tylininternationalgroup
• LinkedInlinkedin.com/company/27343
• Instagraminstagram.com/tylininternational

Revenue estimate

Valuation estimate

Number of profiles

Profiles26 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&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