High Quality Content by WIKIPEDIA articles! Parsons Brinckerhoff (PB) is a professional services firm with 14,000 employees in 150 offices providing construction and operation management, planning, design, engineering, program management, strategic consulting, environmental and sustainability services for clients and communities in the Americas, Europe, Africa, the Middle East, Asia, and Australia-Pacific regions. The professional services division of Balfour Beatty, the international infrastructure group, PB is active in both the public and private sectors, and its projects are focused on transportation, buildings, power, water/wastewater, and community development.