Ayesa Engineering Ranks in the Top 10 Global non-US PMC Firms

• #9 among non US firms for International Construction Management and Programme Management fees, reflecting strong client trust and consistent delivery at scale

• Five World Top 20 rankings in the ENR Global Sourcebook 2025, alongside a climb of thirteen places to #61 in the WA100, reinforcing Ayesa’s growing international presence.

Ayesa Engineering, a global engineering firm with nearly 60 years of experience shaping the built environment, has strengthened its position in key international sector rankings, highlighting both scale and expertise.

Among non-US firms, Ayesa Engineering now ranks #9 globally in ENR’s Top 250 International Contractors survey, marking a significant milestone in the company’s international growth and continued performance across complex programmes.

The Engineering News-Record (ENR) Global Sourcebook 2025 also recognizes Ayesa Engineering across multiple sectors: five World Top 20 placements, two World Top 40 rankings, and a position within the top 50 Global International Design Firms.

This achievement is further strengthened by a thirteen place rise in the WA100 ranking, from #74 to #61, reflecting the firm’s continued growth, resilience, and increasing international profileThe WA100, published by Building Design magazine, is an annual global survey of the largest architecture firms, ranked primarily by the number of fee-earning architects employed, providing a benchmark for firm size and international scale.

ENR Global Rankings 2025

World Top 20

• #14 in Water Supply (up two places)
• #8 in Treatment and Desalination (new ranking)
• #11 in Rail and Mass Transit (new ranking)
• #18 in Highways (new ranking)
• #20 in Marine and Port Facilities (up five places)

World Top 40

• #38 in Oil and Gas
• #37 in Industrial Process

ENR Top 225 International Design Firms

• #43 globally
• #7 in Latin America
• #24 globally in Transportation (stable year-on-year)
• #14 globally Water supply

Non-US Firms – International Construction Management & Programme Management

• #9 globally ($179.5M Agency CM fees)

Projects where Ayesa played a major role were recognized for their excellence, reinforcing the company’s reputation as a trusted global partner for complex, high-impact infrastructure:

• Santiago Bernabéu Stadium, Madrid, Spain. Sports and Entertainment: A landmark stadium transformation project in which Ayesa Engineering project managed as part of the wider project team.

• Riyadh Metro Lines 4, 5, 6, Saudi Arabia. International Railway Infrastructure: Major metro lines and elevated stations delivered with Ayesa Engineering providing design and engineering support within a multidisciplinary delivery team.

• Arklow Wastewater Treatment Plant, Ireland. Award of Merit, Wastewater
A nationally significant water infrastructure project recognised for its delivery, with Ayesa Engineering providing engineering design services and employer’s representative.

These recognitions build on Ayesa Engineering’s track record in ENR Global Best Projects, including the Follo Line project in Norway, recognised in 2023 as Best Rail and Transit, where Ayesa acted as lead designer.

WA100 Rankings

The WA100 survey, conducted by Building Design magazine, ranks the world’s largest architecture practices by the number of fee-earning architects they employ. Ayesa Engineering has risen to #61, up from #74, reflecting the firm’s ongoing growth and expanding global scale.

With a 60-year heritage, Ayesa balances local expertise with global scale, supporting clients across Europe, the Middle East, and Australia. These rankings and project recognitions underscore how technical excellence translates into infrastructure that shapes cities, connects communities, and supports a more resilient future.

Rosalio Tomas Alonso Peces, Global COO, Ayesa Engineering:
“Rising across multiple ENR sector rankings demonstrates the strength of our technical teams and our ability to deliver complex projects across diverse infrastructure sectors. This growth reinforces our position as a leading global player, delivering resilient and sustainable solutions that create long-term value for clients and communities.”

Marisa Concha Chabaneix, Chief Markets Officer, Ayesa Engineering:
“These rankings and project recognitions highlight the dedication of our teams and our capability to deliver excellence across multiple sectors. They reflect both our ongoing growth trajectory and our commitment to providing innovative, high-impact infrastructure solutions worldwide.”