Our values

GSE’s men and women are united by common values.

Fundamental to our company culture, these values are: Performance, Agility, Collaboration, Commitment, and Transparency.


Our clients’ satisfaction constantly compels us to improve our performance at every stage and in every aspect of a project: technical, environmental, financial and human. This is how we create value and innovate.


GSE stands for the love of challenges. Every day, I enjoy being a point of reference for my colleagues in the innovative projects GSE carries out


Driven by a real desire to win and succeed for our clients, our employees always seek to go beyond their limits, look for innovative solutions and explore new approaches.


Agility comes with a taste for risk and for challenge. It is a strong value for employees who step outside of their comfort zones and want to exceed the objectives set to bring the best to our clients


The team spirit between our employees is as important to GSE as the “chemistry” with our clients. We instil true partnerships at all levels. Our teams combine their skills and know-how to move together towards a common goal.


Collaboration is about sharing, the collective mindset. Employees are part of a common project; they put their skills together to serve the group. Their ambition is to satisfy our clients.


Our status as a mission-driven company commits us to accelerating our sustainable transformation, by adopting a new vision of the act of building. We are working hand in hand with our employees, customers, suppliers, and partners to achieve this.


Sustainability is more than ever at the heart of our commitments. Our activities must integrate our responsibility towards the planet and future generations, fostering a balance between individuals' well-being, economic performance, and environmental respect.


We can tell each other everything. Thanks to the conversation that GSE maintains throughout each project within the company, with suppliers and above all with clients, transparency and attentive care are defining features of our relationships.


GSE’s values are embodied in the transparency of our communication with clients.

GSE officially recognised as a purpose-led company 

At GSE, we address environmental and social concerns in all our activities. To this end, our strategy focuses on three key areas:

  • Driving sustainability: we integrate CSR into our governance processes, based on ethics and dialogue.
  • With and for employees: we respect human rights and implement the highest standards of health & safety. Our employees apply best practices every day.
  • Supporting communities: we promote local development, applying the principles of sustainable construction and responsible purchasing.


On 28 July 2023, GSE became a “Société à Mission” under French law, with the stated purpose of “Designing & building respectfully of nature, growing by serving local communities and prospering by taking care of people”.

Learn about our CSR strategy  Eco-friendly buildings

Wellbeing at work

GSE pays particular attention to employees’ comfort. Modern premises, leisure facilities, pleasant working conditions, as well as independence and responsibility in their jobs.

Watch a video on the measures taken by GSE to improve wellbeing at work.

GSE’s offices expertise

GSE, a client-focused company

Client satisfaction is our top priority. Keeping our promises, supporting the client from project definition to completion, ensuring that operations run smoothly before, during and after handover: GSE does everything possible to meet the client’s needs and expectations.


For GSE, client satisfaction means staying committed, creating trust, anticipating, listening, being transparent but also being agile and seeking performance at all times. A client satisfaction handbook is handed out for each project to stimulate conversations and provide the best possible response to all requests.


Our commitments Client First

Our Quality & Safety policy

People’s safety and buildings’ reliability are our number 1 priority. And we stay focused and vigilant to the smallest detail. Safety is an ongoing concern that dictates our choices throughout the design and construction of every building. We regularly update GSE’s Safety Handbook to guarantee the highest level of protection for all project participants.


GSE’s own Quality Assurance Plan includes 50 control points, almost 100 on-site verification cards and more than 200 standard technical details. We constantly adapt it to reflect new construction techniques and regulations.


By establishing procedures and methods on all its worksites, GSE maintains rigorous control over projects. This enables us to achieve a very low risk rate and a high level of quality – to our clients’ greatest satisfaction.


GSE provides all the relevant support to its teams during construction. We also measure all operation-related risks. Our QSM department has seven experts who regularly train project managers and engineers, visit worksites and carry out around 200 audits a year, in all countries where GSE operates.


our organisationour safety policy statement

Our Purchasing Charter

Through the Purchasing Department, GSE is committed to building mutually profitable, long-term relations with the contractors working on our sites. We maintain open conversations, improve processes and operating methods, and take into account potential issues to ensure that the sites run smoothly.


The quality of the initial survey (reflected in the tender documents) and the very thorough preparation of projects play a key role in ensuring optimal working conditions on our construction sites. They also enable us to guarantee that we build according to the costing specifications.


With regard to suppliers, GSE is committed to an exemplary payment policy. Our technical requirements are detailed and we are transparent in awarding contracts, which enables us to build trusting relationships.

Responsible purchasing code You are a supplier, contact us