
About Us
Mission & History
CY:ONS was born from a simple, stubborn question: why does the e-bike industry keep solving the same problem the same way?
As cities grew more complex and the need for smarter, cleaner transport became impossible to ignore, we saw an opportunity that others were missing. Not to build another e-bike, but to rethink the technology that powers them. To challenge assumptions that the industry had accepted as permanent. To ask what becomes possible when you approach mobility from first principles rather than convention.
What started as a series of sketches in a workshop in Limburg has grown into a cross-disciplinary team of engineers and designers pushing the boundaries of what electric mobility can be. We work at the intersection of physics, industrial design, and software — developing technology that is genuinely new, not incrementally better.
We do not believe in disposable design. Every product we create is built to last, to adapt, and to serve real people in real conditions — city commuters, families, delivery riders, long-distance cyclists. We design from their needs, prototype in-house, and refuse to compromise on what matters.
CY:ONS is an innovation company. Our work blends design, engineering, and purpose to push what a bike can mean in everyday life. We imagine, prototype and deliver products that move with people, not against them.
The CY:ONS Team
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Sébastien Grajezyk
Co-founder & CEO
Leading CY:ONS with a focus on strategic direction, partnerships, and innovation strategy.
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Tim Grootjans
Co-founder & CTO
Overseeing product engineering, prototype development, and mobility innovation.
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Dante Bellini
Co-founder & CPO
Shaping the product experience from concept to execution.
Careers
Mechanical Engineer (Mobility Systems)
We're looking for a mechanical engineer who thrives at the intersection of precision, adaptability, and urban function. In this role, you’ll take the lead on developing key mechanical systems in our stretchable e-bike platform—including frame joints, locking mechanisms, and sliding assemblies.
Full-time | Hybrid
Firmware Developer (IoT / BLE / GPS)
CY:ONS is developing a lightweight connected platform for its e-bikes, and we need a hands-on firmware developer to build it from the ground up. You’ll work on integrating sensors, displays, locking systems, and location tracking into a cohesive IoT layer.
Part-time | Remote-friendly