Discover Assystem

About Assystem

Who are we?

Assystem is an independent engineering group that has been in business for over 50 years. We specialise in managing projects that are complex on account of their size, technological content or functional, safety and security requirements. As a major player in digital engineering, Assystem assists its clients in their digital transformation delivering solutions in digital engineering, architecture and industrial information system integration.

We currently have 5,700 employees working in 14 countries in Europe, the Middle East, Africa and Asia. We help our clients to manage, design, build and improve the performance of infrastructure used for electricity production, transport systems and healthcare facilities as well as in workplaces and other locations, with the overall aim of putting in place safe, high-performing and cost-efficient equipment and facilities that provide a best-in-class user experience.

Our vision (1/2)

Assystem's mission is to contribute to the success of the two major revolutions taking place in today’s society: energy transition and digitalisation.

Energy transition
Combating climate change is undeniably a key priority for the 21st century and the fight cannot be won without energy transition on a worldwide scale. This means making safe and sustainable energy available for all of the world's populations so they can enjoy the highest living standards, particularly in terms of healthcare, communications, education and comfort. At Assystem, we believe that energy transition is about more than finding ways to limit  energy consumption. We also need to consider the significant increase in demand for electricity by new technologies and the development of increasingly low-carbon sources of electricity through a combination of nuclear power and renewable energies. We believe that nuclear power has an essential role to play in guaranteeing energy security and reducing the impact of greenhouse gases.

Services nucléaire
Our vision (2/2)

When it comes to modern society’s other major revolution – digitalisation to improve infrastructure performance – the playing field is vast and there is a host of new technologies out there. For example, it is about improving safety and security levels by more effectively managing needs and requirements. And it is also about improving the design and management of projects by using digital engineering tools, and developing command and control systems, combined with cobotic solutions, in order to optimise the performance of facilities. Assystem’s aim is to continue to develop these solutions in the nuclear sector as well as in the fields of energy, transport, life sciences, and more widely, complex infrastructure.

cybersécurité industrielle
Our values

From its very beginnings, Assystem has viewed a workforce that is racially, gender and socially diverse as a real advantage. In conducting our projects we promote sustainable employment and skills development in the countries where we operate and we encourage the emergence of internal talent by valuing and rewarding ability, commitment, loyalty, ethical behaviour, team work and strong customer relationships.


Key figures




Years of experience




€ Millions



#Incredible Women

A pro-active strategy and ambitious support programme for women engineers


People with disabilities

Assystem is a pioneer in its industry when it comes to employing people with disabilities. Because we firmly believe that the diversity of a company's workforce adds value, over the past ten years we have put in place numerous measures to promote their employment.



Our actions focus on Human Resources, Environment and Sustainable Development.



We consider the health, safety, security and well-being of our people as key elements contributing to the success of Assystem.


Assystem Imagine

It's an innovation program to meet the new challenges of engineering, aimed at accelerating the firm’s digital transformation and enabling it to provide more competitive solutions for its clients

50 years of experience on video


Chairman and Chief Executive Officer
Deputy CEO and CFO
Chief Operating Officer

Since 22 May, 2014 Assystem has been a public limited liability company with a Board of Directors. This method of administration provides governance more closely aligned with management, while ensuring adequate oversight by the independent directors. 
Assystem’s senior management attaches great importance to the efficiency of its process for making important decisions and the smooth flow of information within the Group. This constant concern is largely due to its highly decentralised organisation and continues to play a relevant role as the company gradually grows more global.

The Board of Directors sets the strategic, economic and financial policies of Assystem’s businesses, and oversees their successful implementation.

Subject to the powers expressly granted to shareholders and within the limits of the corporate purpose, the Board examines any and all matters concerning the smooth running of Assystem at the initiative of its president, and in its deliberations it rules on the matters that concern it. These include all strategic decisions for Assystem and the Group.

To carry out its tasks effectively, the Board receives regular and comprehensive information on the matters submitted to it prior to its meetings, and on all matters on the agenda including the quarterly reports on the management of the company.

The Board meets as often as the interests of the Company require it to, and at least three times a year.


The Assystem Board of Directors consists of five members, including three independent members(*), all appointed for a renewable term of three years.

  • Mr. Dominique Louis, Chairman and Chief Executive Officer
  • Mr. Gilbert Lehmann *
  • Ms. Miriam Maes *
  • Ms. Virginie Calmels *
  • Tikehau Capital, represented by Vincent Favier

On 5 June 2015, Mr. Philippe Chevallier was appointed Deputy CEO and CFO by the Board of Directors.

The Board of Directors has established two special committees, an Audit Committee and a Remuneration and Appointments Committee.

The rules of procedure of the Board of Directors, which is available for shareholders at the Company’s head office and also on this website, determine the responsibilities of the Board and of its committees. They specify the Board’s mode of operation and the procedures for implementing legal requirements and statutory provisions concerning its role in the management of Assystem. The rules also mention the rights and duties of the Members of the Board, particularly regarding the prevention of conflicts of interest, the strict confidentiality of its deliberations and the relevant despatch for participating in its work. They also set down the rules on transactions involving Assystem’s shares, as recommended by the Autorité des Marchés Financiers.

Read the internal regulations of the board of Directors

Décision of the board

Publication de l'autorisation du conseil d'administration du 09 mars 2016 (French only)

Audit Committee

The Audit Committee assists the Board to exercise its powers and functions in the areas of finance and auditing, including the integrity of financial reporting, internal control, carrying out internal audits, the independence and performance of the Statutory Auditors, risk management, financial planning, monitoring major projects and ethical standards.

The Audit Committee consists of:

  • Mr. Gilbert Lehmann - Chairman
  • Ms. Miriam Maes
  • Tikehau Capital, represented by Mr. Vincent Favier

Remuneration and Appointments Committee

This is responsible for submitting to the Board proposals for the appointment of members of the Board of Directors, any executive officers and the members of the Audit Committee. It is also informed by the Chairman of the Board of Directors of the appointments of other executives.

In addition, the Committee proposes to the Board the amounts for Directors’ fees to be submitted to the General Assembly as well as their allocation between the members of the Supervisory Board.

The Committee may also propose to the Board the remuneration of certain executive officers and, upon request of the Chairman of the Board, to comment on the terms.

The Remuneration and Appointments Committee consists of:

  • Ms. Miriam Maes, Chairperson
  • Mr. Gilbert Lehmann
  • Tikehau Capital, represented by Mr. Vincent Favier

Executive Committee

Chairman of the operations steering committee
Deputy CEO and CFO
Senior Vice President Energy Transition & Infrastructures
Senior Vice President Nuclear
Senior Vice President MPH



Shaping the future of the energy and digital revolutions