Think long term
Prefer durable foundations to short-term optimisation.
The group
A holding company built to create.
FEROX YT combines an engineering culture, leadership experience and a simple ambition: to build solid, useful companies that are able to last.
Jérémy WALTHER President & founder
The founder
A technical culture turned into a business culture.
A computer science and network engineer, Jérémy WALTHER built his career across software development, infrastructure, management and organisational transformation.
FEROX YT began in 2018 as an independent DevOps consulting activity. That experience shaped a conviction: the principles that make systems reliable — simplicity, observability, automation and continuous improvement — can also make a company more robust.
In 2022, he co-founded FIREBRAKE SAS and became a shareholder. In 2026, FEROX YT became a simplified joint-stock company and fully embraced its role as an entrepreneurial holding company. Technology remains central to its DNA, now serving a broader range of ventures.
Our principles
Substance before appearance.
Our way of building companies is based on four principles applied to both decisions and operations.
Stay pragmatic
Choose the solution that fits the context, not the one making the most noise.
Control risk
Secure, document and prepare every business to handle the unexpected.
Improve continuously
Measure, learn and evolve the organisation without losing coherence.
Milestones
Our story.
-
FEROX YT is founded
An independent business is created around software development, DevOps, infrastructure and support for technical teams.
-
FIREBRAKE SAS is co-founded
Jérémy WALTHER helps create FIREBRAKE SAS as a co-founder and shareholder. The stake is subsequently held by FEROX YT SAS from 2026.
-
FEROX YT SAS is incorporated
FEROX YT becomes an entrepreneurial holding company that creates, owns, structures and supports portfolio companies.
-
Candelaria is created
A group company is launched around creative experiences and candle-making workshops.