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Colsen, Environmental Engineering Consulting Firm, B.V.

Environment and Water Treatment

At Colsen, we see waste as something useful. We turn wastewater and manure into biogas, clean water, and valuable resources like phosphate and nitrogen. Pretty cool, right?

Joop Colsen founded the company in 1989, and we remain a family-owned business to this day. Since then, we have grown into a global leader in water, sustainable energy, and the environment, with offices in the Netherlands, Spain, and South Africa, and partners all over the world. We handle everything in-house: we develop our own technologies, design the processes, engineer the plants, and deliver complete installations from start to finish.

As a family-owned business, we don’t have corporate red tape. Communication lines are short, we’re flexible, and your ideas are heard. You’ll work side by side with technology experts, engineers, and project managers. Together, we turn mathematical models into real installations, improve our technologies, and help clients with everything from permits to subsidies.

Our headquarters in Hulst is our knowledge hub. That’s where we invest in learning, with training programs that help you continue to grow.

We are looking for...

Industrial Engineer in Civil Engineering

Bioengineer

Industrial Engineer in Chemical Engineering

Industrial Engineer in Electromechanics

You! At least, if you’re a technical student about to graduate, or a young engineer with up to 5 years of experience who wants a job that actually makes a difference.

Maybe you studied chemical, process, environmental, mechanical, or electrical engineering—or something similar. You enjoy solving challenging technical problems, and you want to see your work turn into actual installations, not just reports that end up in a drawer.

Here's what you get:

Real responsibility from day one
Experienced colleagues who are always happy to help
International projects and the chance to travel
Opportunities to learn and grow through our training programs
Work that makes the world a little cleaner every day

Does this sound like something you'd be interested in? Join Colsen and let's build a greener tomorrow together.

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