Look back with pride. Look forward with anticipation.


Expleo was born in 2017, when the outsourced R&D division of Assystem became the independent company Assystem Technologies. In 2018, Assystem Technologies acquired SQS (Software Quality Systems AG) to form a single organisation, later joined by management consultants Moorhouse and then Stirling Dynamics, a marine and aerospace specialist.

Expleo is now the unique provider of end-to-end, integrated engineering, quality services & management consulting for digital transformation. In today’s climate of unrelenting change, we bring you the right mix of expertise, and the right balance of boldness and reliability, to meet your business needs.

Expleo is built to address the turbulence and opportunities that organisations face in this disruptive era.

  • 2019

    Assystem Technologies group of companies becomes Expleo.

  • 2018

    Assystem Technologies acquires SQS Software Quality Systems AG (SQS).

  • 2018

    Assystem Technologies acquires Moorhouse, a UK-based management consultancy.

  • 2018

    Assystem Technologies acquires Stirling Dynamics, a UK-based marine and aerospace engineering specialist.

  • 2017

    The outsourced R&D division of Assystem SA, Global Product Solutions (GPS), breaks away to become an independent company, Assystem Technologies, opening new growth opportunities.

  • 2015

    SQS acquires management consultancy firm Trissential LLC in the US.

  • 2013

    SQS acquires a majority stake in Thinksoft Global Services Ltd, greatly increasing its activity from Indian offshore centres.

  • 1997

    Assystem opens its first German subsidiary, in Hamburg.

  • 1982
  • 1966

    ATEM engineering firm (to become Assystem in 1995) founded in Paris, France to develop plants in the steel and nuclear industries.