Meeting tomorrow's challenges together

To reveal the full potential of magnesia, Terresis relies on passionate and animated employees on a daily basis. Expertise, commitment and audacity… Joining Terresis means joining pioneering teams around the world and contributing to the development of high-performance, safe and sustainable solutions.

A collective ambition driven by passion and commitment

By joining Terresis, you will be surrounded daily by women and men who are experts in their field, each and every one of them participating in the Magnesia ecosystem. Our employees work in a variety of environments, such as laboratories and production units, in the field in direct interaction with our customers, but also with the support function teams based in our international offices. Others are involved in ore extraction, inventory management and the design of innovative products designed to transform the way magnesia is used.

Together, you will participate in large-scale, innovative and strategic projects for the company. Individually, you will work on the development of our company, and will be fully committed to exciting and rewarding projects.

A rich, multicultural, diverse environment

Our greatest strength is the richness and diversity of our employees. Thus, by joining Terresis, you will be enriched by contact with your colleagues from all walks of life. You will also have the opportunity to evolve in an environment conducive to fulfillment and sharing, with a strong spirit of conviviality.

At Terresis we strongly believe that diversity of experiences, perspectives and talents enriches our work environment and stimulates innovation. We strive to create a space where every individual feels valued and respected, regardless of background, gender, age, or beliefs. By fostering an inclusive culture, we ensure that everyone can contribute fully to our collective success, while growing personally and professionally.

Joining Terresis means benefiting from a dynamic environment where diversity is a strength and inclusion is a matter of course.

Personalized and benevolent support

Throughout your professional career at Terresis, we strive to be at your side: to accompany you, to support you, to remain attentive.

At Terresis , we take the time to integrate each new employee to allow them to get to know the company, our culture and our values better, but also to understand the contours of the expected missions.

We also pay great attention to skills development and career development: the company provides various tools to promote development, adaptation to the position and the acquisition of new skills, in particular through internal or external training.

Terresis, an international company open to the world...

Within the Groupe Roullier, Terresis enjoys a great deal of independence and a capacity to innovate and develop. The emulation present in all our departments, coupled with an international vision, is particularly stimulating for our employees: mobility is encouraged and bridges between departments exist.

We are also committed to young people, through an active policy of internships and work-study programs, and through partnerships with schools.

... Driven by strong values

At Terresis we are united by a common ambition, that of exploring the potential of magnesia while reconciling performance and sustainability. Because we want to find the right balance between what we harvest and the preservation of our planet, three strong values drive us on a daily basis: boldness encourages us to push the limits, expertise allows us to transform potential into reality, and commitment forces us to act responsibly.

This vision is reflected in the deployment of an ambitious CSR policy and the development of solutions aimed at significantly reducing our carbon emissions. We are also committed to ensuring the well-being and safety of our employees at all our sites, with a particular focus on the activities within our mines and production plants.

At Terresis, people are at the heart of our concerns, whether within the company, in the field in contact with our customers, and more broadly by building a sustainable future for future generations.

For us, diversity is a strength and inclusion is a given

Gender Equality Index

Resulting from the “Professional Future” law of September 5, 2018, and implemented by a decree on January 8, 2019, the gender equality index aims to support the progress of companies with at least 50 employees in this area. For the period from January 1st to December 31st, 2025, Terresis (Timab Magnesium) obtained a score of 92/100, which is 8 points more than the previous year. which is 8 points more than the previous year.

We are proud of this progress, which reflects the effectiveness of the actions taken, notably the increased feminization of our Management Committee, now composed of three women.

This score is calculated based on 4 criteria:

Criterion 1: Pay gap: comparison of the average salaries of women and men.
Criterion 2: Gap in individual raise rates (excluding promotions) between women and men.
Criterion 3: Percentage of female employees who returned from maternity leave during the reference year and received a raise upon their return during the same period if raises occurred during their leave.
Criterion 4: Number of people of the underrepresented gender among the 10 highest salaries.

For the year 2025, the score of 92/100 was achieved as follows:

On criterion 1, the pay gap between the average salaries of women and men is 37/40.
On criterion 2, the gap in distribution of individual raises (excluding promotions) between women and men is 35/35.
On criterion 3, 100% of women received a raise upon returning from maternity leave, resulting in a score: 15/15.
On criterion 4, the number of people of the underrepresented gender among the 10 highest salaries is 5/10.

Among our two improvement levers:

Reduce the pay gap between women and men by 5% within two years, specifically by:
- Conducting an annual salary audit to identify and correct unjustified discrepancies.
- Raising awareness among managers about the importance of pay equality during performance evaluations and promotions.

Increase the representation of women on the Management Committee and among the ten highest salaries of the company. To achieve this:

- We have recently recruited three women who now sit on the Management Committee. Their presence will significantly improve female representation among the highest salaries.
- Encouraging the internal promotion of women to positions of responsibility.

We are convinced that these actions will strengthen our commitment to professional equality and create a more equitable and inclusive working environment for all our employees.

Terresis is composed of 3 legal entities (Timab Magnesium, Magnesitas Navarras, and Magnesium do Brasil), with a total of 960 employees worldwide!