William Clyde Markley

Jacobs One Ltd. provides technical and management consulting services to customers in the UK. It offers support to industrial, commercial, and governmental clients. It customers include developers and engineering companies in the defense, energy, environment and utilities, property and structures, oil & gas, and transportation infrastructure markets. Jacobs was founded in 1895 by John T. Babtie and is headquartered in Glasgow, the United Kingdom.

Jacobs Engineering Group, Inc. engages in the provision of a diverse range of technical, professional, and construction services to industrial, commercial, and governmental clients. The firm operates through Critical Mission Solutions, and People & Places Solutions segments. The Critical Mission Solutions provides a full spectrum of cyber, data analytics, systems and software application integration and consulting services. The People & Places Solutions provides end-to-end solutions for clients' complex challenges like whether climate change, energy transition, connected mobility, integrated water management, smart cities or vaccine manufacturing. The company was founded by Joseph J. Jacobs in 1947 and is headquartered in Dallas, TX.