About Assystem

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 fourteen 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 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.

In figures




years of ecperience




millions of euros

Our offices around the world

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

  • 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 18.12.19

The 2019 annual ENR ranking of engineering companies

News 16.12.19

Assystem Strengthens Relationship with Rosatom

News 16.12.19

Major ITER Architect Engineer contract is secured by Engage

News 07.11.19

Assystem is part of the exciting SMR story in the UK

News 11.10.19

Assystem signed a new joint venture with the Republic of Uzbekistan

News 24.09.19

Assystem features on Titans of Nuclear podcast

Press release 12.09.19

Northern Powerhouse Partnership gains a global partner

News 29.07.19

Three Assystem employees win the Spark! contest

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