A focused team built around a physical insight.

Invisix was founded in 2025 to commercialize a decade of soft x-ray metrology R&D, incubated since 2015 inside ASML. We stepped out as an independent deep-tech company in Eindhoven, leveraging this firm foundation.

About Invisix.

Invisix is a Netherlands-based semiconductor metrology company developing soft X-ray measurement systems for advanced logic and memory manufacturing. Its technology uses short-wavelength, broadband soft X-ray scatterometry to reconstruct the detailed 3D structure of next-generation semiconductor devices at high throughput. Invisix is headquartered in Eindhoven and is powered by technology licensed from ASML.

The people running Invisix.

Christina Porter is the CEO and a co-founder of Invisix Measuring Systems, with 12 years of experience developing soft x-ray metrology. Her PhD in Physics from the University of Colorado at Boulder paired high harmonic generation light sources with inverse algorithms for semiconductor device characterization. After pitching this concept to ASML in 2015, Christina moved to the Netherlands with the dream of seeing this technology through from academic research lab to indispensable product in the fab. She was a Project Leader and Pathfinding Architect in R&D for the SXR program at ASML for seven years. Christina was inspired to found Invisix after reading The Innovator's Dilemma and becoming convinced that SXR was a disruptive technology that could most efficiently reach its full potential in a startup environment. She is an inventor on more than a dozen patents. Outside of work, Christina enjoys DIY projects, swing dancing, and snorkeling.

Sietse van der Post is the Chief Technology Officer and a co-founder of Invisix Measuring Systems. He holds a PhD in physics and brings twelve years of experience at ASML Research, including ten years dedicated to soft x-ray metrology as Sensing Architect and Main Architect in the SXR Research program. Sietse co-founded Invisix after becoming convinced that soft x-ray metrology is ready to become one of the most important measurement technologies in semiconductor manufacturing, with the context of an independent start-up as the most suitable environment to make this a success. At Invisix, he leads R&D and technology development, defining the next generation of measurement systems with a focus on turning cutting-edge physics into instruments that perform reliably in demanding high-volume manufacturing environments. He is an inventor on 31 published patents in the metrology field. In his spare time, Sietse enjoys a large variety of low-tech activities like winemaking, telescope building and synthesizer projects.

Roald Dogge is the Chief Operating Officer of Invisix Measuring Systems. He brings insight from ten years at NTS, a tier-one semiconductor contract manufacturer, including time as COO, alongside eleven years at Volvo. He leads operations, manufacturing, and supply chain development, drawing on an extensive supplier network built across two industries with uncompromising quality demands. His focus is on rapidly scaling production of complex precision systems while maintaining the reliability and discipline required at the leading edge of semiconductor equipment. His hobbies include motorcycle racing and mechanical tinkering.

Hens van Ooijen is the Chief Financial Officer of Invisix Measuring Systems. He spent thirteen years at FEI / Thermo Fisher Scientific in senior international finance roles, followed by eight years at high-tech startups where he supported companies through rapid growth. At Invisix, as a member of the leadership team, he oversees accounting, financial planning and analysis, and corporate development, combining corporate discipline with startup agility to build the financial foundation the company needs to scale.

About Transition Ventures.

Transition Ventures is a London-based venture capital firm investing from inception to Series A in companies transforming the physical world. Its portfolio spans Europe and the US, including companies like Olix, Upway and Seneca. The team behind the fund have founded and scaled companies worth over $20bn across software, hardware and deep tech.

About Hitachi Ventures.

Hitachi Ventures is the corporate venture capital arm of Hitachi, Ltd., with over $1B in assets under management and teams based in Munich, Boston, San Francisco and Bangalore. The firm invests in foundational technologies across AI infrastructure, enterprise software, industrial automation, energy, and healthcare. The firm partners with founders solving complex challenges at the intersection of hardware, software, and physics, and works closely with Hitachi's global R&D and operating businesses to support validation, industrialization, and real-world deployment at scale.

High aspect ratio, resolved.

3D NAND now stacks 200, 300, 400+ memory layers. Their channel holes punch through tens of microns of material at sub-100 nm diameter. Tilt, bow, voids, and CD variations along that depth determine yield — and they're invisible from the top.

SXR penetrates the stack with the right balance of attenuation and sensitivity. Invisix reconstructs the channel-hole geometry layer by layer — including features deep inside the stack — without slicing a wafer.