We've raised a €2.7M pre-seed round to build our pilot and grow the team

We've raised a €2.7M pre-seed round to build our pilot and grow the team

We've raised a €2.7M pre-seed round to build our pilot and grow the team

Build with us

We're a founding-team deeptech company with validated core design, patents filed, and seed funding secured. We're hiring engineers who want to build the hardware, not just model it.

Open roles

Mechanical Engineer -- Materials & Prototyping

Mechanical Engineer -- Materials & Prototyping

Senior Alkaline Electrolyzer Stack Engineer

Senior Alkaline Electrolyzer Stack Engineer

Exceptional Generalist Engineer -- Secret Project

Exceptional Generalist Engineer -- Secret Project

What we're building

A centrifugal, bubble-free electrolyzer targeting 95% efficiency (HHV), >30-year stack life, and the lowest CAPEX in its class. We're finishing a 10 kW pilot in Rotterdam and Delft, with a 100 kW pilot next.

How we work

How we work

Hands-on engineering

We design, build, test, break, and iterate in the workshop.

Small founding team

Every hire shapes the product and the company.

Based in Netherlands

Come join us at YES!Delft with hands-on work in cutting edge facilities.

Spiral Hydrogen OÜ

Registration number: 16896381

VAT number: EE102792151

Delft, Netherlands

© 2026 Spiral Hydrogen OÜ · Web by Lumela

Spiral Hydrogen OÜ

Registration number: 16896381

VAT number: EE102792151

Delft, Netherlands

© 2026 Spiral Hydrogen OÜ · Web by Lumela