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1966 - 1989 : Les années nucléaires

The beginning: The Nuclear Business


People predicted a world populated by man-robots, dominated by machines. With its worldwide reputation, Atem gave a somewhat different picture: in our system, five out of every six employees were executives. Humans managing their own work.
Paul Trufaut, Creator of Atem


Creation of ATEM specialised in the commissioning of industrial units (nuclear, steel, etc.).


Creation of R'Data, a company specialised in automatic control systems and industrial IT, by Dominique Louis.


Creation of Alphatem, a subsidiary co-owned with Cogema and focused on nuclear power.


Formation of Assystem following the merger of Atem and Alphatem.


Listing on the Second Market of the Paris Stock Exchange.

1990 - 1999 : Vers la diversification

Initial public offering and diversification


The challenge facing Assystem is not one of growing in size but of growing in complexity in order to increase our probability of survival.
Dominique Louis, Chairman of the Management Board at Assystem when the company became listed


Diversification towards the design and development of products for the Aerospace and Automobile sectors (acquisition of Studia).


Assystem expands into Spain.


Penetration of new technologies sector through the merger with Brime Technologies in France.

2000-2011 : Développment international

Growth and international development


In a very short time, we have succeeded in the challenge of refocusing on our core business while opening up to new sectors and new countries. The company now has a genuine long-term industrial project.
Michel Combes, Chairman of the Supervisory Board and former Managing Director of Assystem


United Kingdom: Acquisition of Inbis, a British engineering group.
Germany: Acquisition of SKI and Atena, subsidiary of the German company MTU Aero Engines.


Creation of Silver Atena with the merger of Silver Software (India) and Atena (Germany).


Creation of n.triple.a, a strategic alliance in nuclear sector with the British engineering group, Atkins


Assystem acquires Berner & Mattner (Germany), a specialist onboard systems manufacturer


Development in the oil and gas sector through the acquisition of MPH, a group operating in Africa and the Middle-East


Assystem expands its Aerospace in-service offering with the acquisition of Sud Aviation Services

Assystem Acquires Radicon Gulf Consult to Grow in the Middle-East Infrastructure Market


Acquisition of Plast Concept: Assystem Expands Its Plastics Engineering Skills


Acquisitions of Envy, Onyx Promavi, Aerotec Concept, Batir and Edison Recruitment


Acquisitions of Automotive Solutions Germany GmbH (ASG), The Biotech Quality Group (BQG) and Euro Contrôle Projet (ECP)

At the moment

14/03/2018 - The Assystem Group creates Assystem Care – a dedicated life sciences subsidiary

Following on from its acquisition in late 2017 of a majority stake ...

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About Assystem

Assystem is an international Engineering and Innovation Consultancy with a presence in 20 countries and nearly 12,000 employees. We are a key partner for the largest industrial groups.

Assystem dans le monde