About Assystem

Engineering and complex project management company

As an independent engineering group, Assystem has over 50 years of experience providing industrial infrastructures with engineering services and managing projects that are complex in size, technological content, and safety requirements.

Assystem supports its clients in the design, construction supervision, commissioning and operation of their industrial infrastructures, ensuring that their facilities are safe and effective, in line with their budget and schedule.

As a major player in digital transformation, Assystem also supports its clients in their digital projects with digital engineering and industrial data science solutions to meet their operational performance challenges.

We currently employ 5,700 people working in seventeen countries in Europe, the Middle East, and Asia.

Discover our clients’ projects

Our vision

Energy transition

Combatting climate change is undeniably one of the priorities of the 21st century. This fight will require energy transition on a global scale. This involves making safe and sustainable energy available to all the populations around the world, enabling them to access more advanced standards of living, particularly in terms of healthcare, communication, education, and convenience. Assystem considers that energy transition entails, alongside energy demand control actions, substantial development of electricity usage and also increasingly decarbonised electricity, combining nuclear power and renewable energies. Assystem is of the view that nuclear power has an essential role to play in guaranteeing energy security and reducing the impact of greenhouse gases.


The second major revolution in which Assystem is playing a part is that of digitalization and using it to enhance the performance of our infrastructures. Mining the data generated in any industrial infrastructure provides a wealth of information and helps leverage performance. The field is thus wide-ranging and the new technologies are multidimensional. For example, levels of safety and security will be enhanced through improved requirements management. Project design and steering will also be enhanced, with digital engineering support tools. Field services solutions will also be developed to optimise the operational performance of facilities and their operators.

In figures


operating countries


years of experience




millions euros turnover

Our offices around the world

As a major player in Engineering and Technology Consulting, the Group is present in 14 countries

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  • Worldwide

  • Europe

  • Asia and Pacific

  • Middle East

Our subsidiaries

Assystem MPH

For over 30 years, MPH has been supporting its clients with recruitment services, outsourced HR centre and recruitment under contract services. The group has almost 1,300 expert consultants in over 80 countries working on complex international projects in the oil, gas, nuclear, aeronautics, defence, and transport sectors.

Find out more about MPH

Assystem ECP

ECP, the leader in project management consultancy and services, helps clients to increase their maturity in this field and, as such, boosts the success of their projects. With an end-to-end offering, including change management, operational assistance (PMO), and information system integration (PMIS), ECP is involved in the nuclear, infrastructure,defence/aeronautics, oil/gas, and life sciences industries.

Find out more about ECP

Breaking news

News 23.02.21

Assystem backs search for Top 50 Women in Engineering in 2021

News 18.02.21

KAD Nuclear to deliver Management Services Package

News 03.02.21

Assystem pledge to attract 100 women to UK nuclear roles

News 18.12.20

Nuclear power will anchor UK’s Net Zero ambition

contrat HAROPA Ports de Paris
News 03.12.20

Assystem and Antea Group signs a contract with HAROPA Ports of Paris

Assystem envy turquie chiffres clés
News 30.11.20

Assystem wins new contract for Akkuyu Nuclear Power Plant

mise en conformité réglementaire nucléaire
News 18.11.20

Nuclear will be at the heart the UK’s energy transition

System Engineering power plant
News 18.11.20

Matt Gallimore is announced as chair of NIA fusion group

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