At SL Materials, skilled professionals, scientists, entrepreneurs, and true enthusiasts work together with one shared conviction: that circular concrete should be the norm. That conviction runs through everything — our laboratories, the factory floor, construction sites, the office, and every conversation about how things can be done better. We are straightforward, direct, and value people who truly know their craft. No nonsense, no rigid structures, no ‘that’s how we’ve always done it’. Instead: room to think, room to make mistakes, and room to keep building.
Our drivers are the convictions on which we base every decision, every day — about what we make, who we work with, and how we behave. Below are five drivers that together form our DNA. They explain why we do what we do, and why we do it this way.
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Here, you have the space to do things differently. We reward curiosity, give people the trust to experiment, and see a failed idea as a smaller risk than standing still. Whatever your role: your idea for doing it better is welcome.
Your work matters. What you do contributes directly to a sector that no longer depletes the planet. We work towards a purpose that is greater than ourselves. You feel that every day in what we ask and what we deliver.
You are never on your own. We work in teams that share knowledge and challenge each other. And we work not just with each other, but also with our partners — demolition companies, contractors, architects, scientists. An ecosystem in which your expertise becomes part of something greater.
Find the answers to frequently asked questions here.
Skilled professionals who truly know their craft and believe that circular concrete should be the norm. We value curiosity, directness and a willingness to contribute. Scientists, engineers, drivers, entrepreneurs — if you have something to bring, you are welcome.
We have vacancies for, amongst others, engineers and concrete mixer drivers. We also welcome open applications at all times. View current vacancies on the jobs page or apply directly via j.onsia@deruttegroep.nl.
That depends on your role. On the factory floor, it is about the machines, production quality and solving whatever comes your way. In the lab or office, it is about research, client contact and the next step in the circular concrete chain. What all roles have in common: your work contributes directly to something bigger.
You work with unique technology that makes a real difference, on a challenge that affects the entire construction sector. There is room to contribute ideas and to make mistakes. We are a family business in spirit and a pioneer in ambition — you notice that in the way we work together.
Send your CV and a brief covering letter to Jens Onsia at j.onsia@deruttegroep.nl. We respond within one working day. Would you prefer to visit the factory first? That is also possible — give us a call.
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