Our members

GTA Géomètres Experts is a French firm of chartered land surveyors based in the Paris region, recognized for its expertise in cadastral surveys, topography, co-ownership division, surface area assessments, and BIM modelling. We support public and private clients in land development, construction, and property management.

Our work contributes to the legal security of land and buildings and relies on cutting-edge tools such as fixed or mobile 3D scanners, GIS, drones, digital models, and digital twins.

Our QHSE system is certified ISO 9001, ISO 14001 and ISO 45001. We also follow the ISO 26000 standard and are LUCIE-labeled for our CSR commitment.

GTA Supports is the internal shared-services entity responsible for QSE, HR, procurement and IT across all entities. Our values — integrity, transparency, technical excellence, safety and innovation — guide our daily actions and long-term vision.

Handicall is a socially responsible and inclusive customer relationship center, specializing in outsourced multichannel customer service. Since 2004, our mission has been to combine economic performance with positive social impact.
With four locations across France, we place people at the heart of our model by promoting sustainable employment for individuals with disabilities.
Our commitment to a more inclusive society is part of a broader Corporate Social Responsibility (CSR) approach, recognized by the LUCIE26000 label.
As a purpose-driven company, we believe that delivering excellent customer service can also be a powerful driver for inclusion, solidarity, and lasting change.

We provide business process outsourcing solutions in tailor-made, agile and responsible ways
Administrative management, accounting, finance, after-sales service, mailing, Handirect Bordeaux takes care of your organisation’s support functions.
Handirect has been awarded Adapted Enterprise status. We employ a majority of people with disabilities, enabling you to meet your employment obligations.

Founded in 1984, Hardis Group’s mission is to harness the potential of technology to drive business transformation, optimize supply chains, and enhance customer performance. The Group consists of three entities: Hardis Tech Services (IT consulting and services), Hardis Supply Chain (supply chain software publishing), and Cloudity (Salesforce and Workvivo integration).

Hardis Group’s CSR strategy revolves around three focus areas: reducing the environmental footprint of its business and of its clients’ businesses, championing diversity and equal opportunities, and using education to drive social inclusion.

Hardis Group has 1,720 employees and achieved revenue of €196.8 million in 2024. It is headquartered in Grenoble, France, and has offices in Germany, Italy, the Netherlands, Poland, Spain, Sweden, the United Kingdom, and the United States.