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. Assystem is focused on continuous development of its expertise in the infrastructure sector.

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 more than 7,000 people working in fifteen countries in Europe, the Middle East, and Asia.

Discover our clients’ projects

Our vision

Energy transition

The fight against global warming is one of the priorities of the 21st century, and implies an energy transition on a world scale, with the objective of making accessible a sure and sustainable energy to all the populations, and thus allowing them to reach the most advanced standards of life, in particular in terms of health, communication, and education.

Assystem's mission is to contribute to the acceleration of the energy transition all over the world. Indeed we work in a global way on the development of decarbonated electricity both on its production and its distribution through the development of nuclear and renewable energies throughout the world. We also work on the renovation of electricity networks, and on the development of new electricity uses such as the development of green hydrogen for the transport decarbonation.

Assystem considers itself as a militant company in favor of the fight against climate change and the development of nuclear energy throughout the world, convinced that the latter is essential in the fight against global warming. 

Our digital activities are also at the service of the energy transition and aimed at accelerating it.


The second major revolution in which Assystem is playing a part is that of digitalisation 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.

Discover the advice of our experts on digitization

In figures


operating countries


years of experience

More than



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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  • Europe

    • Asie et pacifique

      • Moyen-orient

        • Worldwide

        • Europe

        • India

        • Asia and Pacific

        • Middle East

        Our subsidiaries

        MPH, engineering recruitment
        services company

        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 nuclear, energy, aeronautics, defence, and transport sectors.

        Find out more about MPH

        ECP, project management
        services company

        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

        CRA, Human factors,
        Safety & Risk Consultancy

        CRA is one of the UK's biggest integrated Risk, Safety and Human Factors consultancies and is well known for first class delivery of quality services for all kind of Critical National Infrastructures. CRA multi-disciplined risk consultants are at the forefront of risk modelling and data analysis.

        Find out more about CRA Risks

        Breaking news

        Démantèlement site nucléaire Sellafield
        Press release 30.11.21

        Assystem annonce l’obtention de la certification ISO 19443

        Siting and permitting nuclear
        Press release 30.11.21

        Assystem to support construction of PAKS II nuclear power plant

        D-Day 2021 Assystem
        Event La Défense - Paris, France From 21.10.21 to 01.01.70

        Digital day: meet the challenges of complex industrial projects

        solar plant sivas
        Press release 12.11.21

        Assystem conducting environmental and social studies on 50MW solar plant in Sivas, Turkey

        STEP Fusion Assystem
        Press release 04.11.21

        Assystem wins two contracts for new STEP fusion plant

        News 13.10.21

        New Assystem report highlights roadmap to commercial fusion energy

        Press release 12.10.21

        Assystem acquires UK Schofield Lothian

        News 16.07.21

        Assystem Radicon Offers A Digital Future for Energy Projects In The Middle East

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