Accenture plc is an Irish-American professional services company based in Dublin, specializing in information technology (IT) services and consulting. A Fortune Global 500 company, it reported revenues of $64.1 billion in 2023. Accenture's current clients include 91 of the Fortune Global 100 and more than three-quarters of the Fortune Global 500. As of 2022, Accenture is considered the largest consulting firm in the world by number of employees.
Capgemini SE is a French multinational information technology (IT) services and consulting company, headquartered in Paris, France.
Capgemini Engineering is a global innovation and engineering consulting firm founded in 1982 in France by Alexis Kniazeff and Hubert Martigny.
IBM Consulting, rebranded in 2021 from IBM Global Business Services, is the professional services and consulting arm of IBM. It provides services to companies, global government organizations, non-profits and NGOs.
Publicis Groupe is a French multinational advertising and public relations company. One of the oldest and largest marketing and communications companies in the world, it is headquartered in Paris.
COWI A/S is an international consulting group, specializing in engineering, environmental science and economics, with headquarters located in Lyngby, Denmark.
Atkins is a Canadian-British multinational engineering, design, planning, architectural design, project management and consulting services company. It is a subsidiary of SNC-Lavalin and is headquartered in London.
WSP Global Inc. is a Canadian consulting firm working mostly in the built environment. It was created in 2012, following Montreal-based Genivar's takeover of British firm WSP Group plc. It is listed on the Toronto Stock Exchange. After the purchase of New York-headquartered professional services firm Parsons Brinckerhoff in October 2014, WSP effectively became one of the largest professional services firms in the world, with approximately 66,200 employees in 500 offices serving in 40 countries.
Worley Limited is an Australian engineering professional services company which provides project delivery and consulting services to the resources and energy sectors, and complex process industries.
Rambøll Group A/S, also known as "Ramboll", is a Danish multinational architecture, engineering, and consulting company. In the past 25 years, the company has expanded from being a business mainly focused on the Nordic region, to having offices in more than 35 countries, with around 18,000 employees working on projects across the world. Much of the company's activity is centred on Europe, North America, but also in emerging markets.
HDR, Inc. is an American design and engineering company based in Omaha, Nebraska.
EPAM Systems, Inc. is an American company that specializes in software engineering services, digital platform engineering, and digital product design, operating out of Newtown, Pennsylvania. EPAM is a founding member of the MACH Alliance.
Bureau Veritas is a French company specialized in testing, inspection and certification founded in 1828. It operates in a variety of sectors, including building and infrastructure, agri-food and commodities, marine and offshore, industry, certification and consumer products.
Business & Decision is an international consulting and systems integration company with its global headquarters in Paris, France. The group specialises in Business Intelligence (BI), Customer Relationship Management (CRM), e-Business with two major directions : Data & Digital.
Artelia is a French design firm specializing in engineering, project management, and consultancy. Launched in 2010, Artelia is active building construction, water, energy, environment, industry, maritime operations, transportation, urban development, and multi-site projects. The group also participates in public-private partnership. Artelia is ranked 83rd among international design firms.
Dominique Cerutti is a French businessman and has been chairman and CEO of the Altran group from June 2015 to December 2020.
Arcadis NV is a global design, engineering and management consulting company based in the Zuidas, Amsterdam, Netherlands. It currently operates in excess of 350 offices across 40 countries. The company is a member of the Next 150 index.
Sia Partners is a strategy consulting firm that serves the following industries: banking, insurance, healthcare, telecommunications and media, energy, resources and utilities, transportation and logistics, industry and retail, government, and technology. The firm is totally independent from providers of software and audit firms.
Jensen Hughes is a professional engineering and consulting services company headquartered in Baltimore that provides services, software, and consulting in fire protection engineering, forensic engineering, and security. The company has approximately 90 offices globally in part due to its acquisitions of and mergers with related safety and security middle-market companies in recent years. As of 2019, it has been led by CEO Raj Arora. The company's projects include conducting forensic investigations of fire accident scenes on behalf of local courts, studying fire dynamics of chemicals with the National Institute of Justice, and working with healthcare associations to stock local clinical practices and hospitals with PPE and other medical supplies.
EY-Parthenon is Ernst & Young's global strategy consulting arm. The firm was established as The Parthenon Group LLC in 1991 by former Bain & Company directors William "Bill" Achtmeyer and John C. Rutherford. In 2014 The Parthenon Group merged with professional services firm EY forming the new entity EY-Parthenon. The move was viewed as part of the continued efforts by the Big Four to move up the value chain from their traditional audit services into more lucrative areas of business, as well as to provide new points of entry to clients.
€1.9 billion (2023)