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Christelle Thieffinne is an experienced professional in social protection and quality management, currently serving as Secrétaire nationale à la protection sociale at CFE-CGC since May 2016, overseeing branches of social security and complementary services. Additional roles include Secrétaire Nationale à la Protection Sociale, RSE et QVT within the Fédération Métallurgie CFE-CGC, and Secrétaire Générale Adjointe at CFE-CGC Aéronautique Espace Défense, alongside membership on the board of Agirc-Arrco and the Conseil d'orientation des retraites. Christelle has an extensive background at Thales Aerospace since 1998 with experience in Lean Management, product responsibility, and quality assurance. Educational qualifications include specialized studies in Lean Management from Télécom Paris and engineering from Polytech Angers, along with participation in IHEST’s national audit program.