Top 90 Science and Technology Facility Engineering Firms for 2025

Jacobs, Fluor, IPS-Integrated Project Services, AECOM, SSOE, Burns & McDonnell, Salas O'Brien, Affiliated Engineers Inc., and EXP top Building Design+Construction's ranking of the nation's largest science and technology (S+T) facility engineering and engineering/architecture (EA) firms for 2025, as reported in BD+C's 2025 Giants 400 Report. Note: This ranking factors revenue from all science and technology (S+T) buildings work, including laboratories, research buildings, technology/innovation buildings, pharmaceutical production facilities, and semiconductor production facilities.

Source: Building Design+Construction's 2025 Giants 400 Report