Oresys is an independent consulting firm created in 1981 and a major player in management consulting, project management and information systems.

Oresys Value Statement

« We are committed to support organizations to perform better, be sustainable and serve people. We are a management consulting firm that embodies 21st century business practices by combining efficiency, agility, responsibility and humanity. » 

Present in all economic sectors as well as having strong business and functional units partnerships, Oresys supports companies by helping them become more efficient, sustainable and people-oriented in two different ways:

  • succeeding in their transformation projects
  • steering and improving their performance

Oresys - Industries

In order to offer a pragmatic and efficient solution to our customer needs , Oresys implements its knowledge, methods and innovative tools, resulting from an expertise of more than 30 years.

Oresys has offices in Paris, Lyon, Marseille, Toulouse, Lille, Nantes and Lausanne.

Oresys - Key Figures

Oresys - Key figures

Amongst Oresys’s clients

Bouygues Construction, Eiffage, Arkema, Air Liquide, Airbus, Solvay, Areva, Ipsen, Novartis, Johnson & Johnson, Sanofi, UCB Pharma…

Financial services 
BNP Paribas, La Banque Postale, Société Générale, LCL, AMF, Banque de France, Aviva, CNP Assurances, Groupama, Harmonie Mutuelle, Mutex, MMA, Matmut, Malakoff Mederic, Reunica…

Energy and utilities
EDF, Enedis, RTE, Engie, Suez, Electrabel, Cofely, Total, Véolia…

Transport and logistics
Airbus, Air France KLM, Dassault Aviation, Michelin, Renault Nissan, Géodis, RATP, SNCF, Safran, PSA Peugeot Citroën…

Auchan, Carrefour, Système U, Intermarché, Marks & Spencer, L’Oréal, Yves Rocher, Métro…

Administration and other services
Commission Européenne, AFPA, BNF, Maire de Paris, Maire de Marseille, Grand Lyon, Ministère du travail, CNAM, Orange, SFR, Canal+, France Télévision, Sony Music, Lagardère Active…

Oresys | News