Pushing performance beyond thermal limits by keeping devices cool
about coolsem
Driven by a shared belief that innovation should never be limited by heat, our team develops solutions that enable cooler, more reliable, and more efficient devices for the next generation of technology.
What we stand for and believe in
01
mission statement
At CoolSem, we deliver wafer-level thermal management solutions that improve performance, reliability, and energy efficiency in RF, power, photonic, and computing devices.
02
vision statement
We envision a world where thermal limits no longer constrain innovation. A world where chips run cooler, systems last longer, and energy is used more efficiently.
Founding team
Robbert van der Waal
CEO
Seasoned leader in MEMS and micro devices, with roles including General Manager at Xiver MEMS Foundry and Philips Laser Sensors, and Head of Philips MEMS & Micro Devices. Formerly in international product marketing for RF at NXP. Focused on people, business, and strategy.
André van Geelen
CTO
PhD in III-V materials with extensive experience in semiconductors and photonics. Formerly at Philips, NXP, EPCOS, JDSU, and Qualcomm, André had a senior role at ThreeFive Photonics (exit ASIP) and lead Antenna Tuners (exit Qualcomm). Known for his pragmatic and intuitive approach to technology.
Kees Steenbergen
COO
Experienced operations and product leader, with senior roles at ThreeFive Photonics (acquired ASIP), GreenPeak, Qorvo, and Pharrowtech. Strong track record in scaling teams and operations, combining analytical rigor with hands-on execution.
Advisory board
Satu Lipponen
Advisory Board
Satu Lipponen brings over 30 years of international leadership experience in technology-driven organizations. As an independent board professional, she is passionate about translating breakthrough innovation into global value creation, scalable business impact, and delivering customer promises through the strength of high-performing teams.
Fred Roozeboom
Advisory Board
Fred Roozeboom brings decades of expertise in semiconductor process innovation, thin-film technology, and nano-materials engineering. He highlights the growing urgency of solving heat dissipation challenges driven by AI, big data, and optical communication through fundamentally new thermal management concepts.
Koen Bouwers
Advisory Board
Koen Bouwers brings strategic and financial expertise shaped by leadership roles at Philips, Apple, and scaling technology companies. He supports CoolSem Technologies in navigating critical early-stage decisions, strategic direction, and financial planning toward industrial growth and execution.
Michael Heuken
Advisory Board
Michael Heuken brings exceptional scientific depth to CoolSem. As an expert in compound semiconductor technology, he is VP Advanced Technologies at AIXTRON and Professor at RWTH Aachen University. With decades of experience in semiconductor for electronic and optoelectronic devices, he supports CoolSem’s development for next-gen wafer-level cooling solutions.