Driven by Curiosity, Committed to Outcomes
We help our clients explore fresh directions, connect across cultures, and find practical, high-quality solutions tailored to their goals.
01
Bridging East & West.
We prioritize authentic relationships and cultural understanding to build trust with our clients and create meaningful partnerships between worlds.
02
Strategic Investment.
We focus on delivering genuine value and lasting impact to ensure our clients invest their time and resources with purpose and precision.
03
Creative Innovation.
We embrace unconventional thinking and cross-disciplinary approaches to discover opportunities that inspire growth and unlock new possibilities.
04
Personal Approach.
We combine sharp strategy with personal attention and responsive service to build trust with our clients and create lasting collaborative relationships.
about us
We're Josha Sietsma and Machteld Zee—two Dutch professionals united by our legal background and over a decade of collaborative partnership. We first met at a conference in the Cotswolds, when Josha was teaching history and Machteld was working with a London-based think tank.
Since then, Machteld has evolved into a researcher for a major organization and multidisciplinary artist. Josha has become a serial entrepreneur with proven success building ventures across multiple sectors. Together, we've cultivated extensive networks spanning business, culture, education, and the arts—connecting the Netherlands and Japan.
In 2025, we launched Kibatsu & Co. to unite our experience, curiosity, and profound belief in the power of creative connection. We combine sharp analytical thinking with creative vision, speed with depth, and a passion for unexpected possibilities. Our work bridges business and culture, East and West—through curated experiences, strategic sourcing, and original collaborations.
Since then, Machteld has evolved into a researcher for a major organization and multidisciplinary artist. Josha has become a serial entrepreneur with proven success building ventures across multiple sectors. Together, we've cultivated extensive networks spanning business, culture, education, and the arts—connecting the Netherlands and Japan.
In 2025, we launched Kibatsu & Co. to unite our experience, curiosity, and profound belief in the power of creative connection. We combine sharp analytical thinking with creative vision, speed with depth, and a passion for unexpected possibilities. Our work bridges business and culture, East and West—through curated experiences, strategic sourcing, and original collaborations.
machteld zee
Machteld Zee leads our creative vision with strategic insights and innovative ideas.
josha sietsma
Josha Sietsma drives strategic partnerships and closes deals that grow your business.
ayano yamada
.png)
Our Tokyo liaison Ayano Yamada ensures smooth coordination and reliable local insight.
.png)
