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Meet our executive team

George Sidiropoulos, MSc

Managing Director & Co-founder of Think Silicon S.A., Country President of Applied Materials

George is a technical innovator and co-founder of Think Silicon. He started his engineering career at Atmel as a digital IC designer and was involved in many SoC designs that reached the market in the areas of wireless communications (wifi, Bluetooth) and VoIP. He continued as a GPU designer at Think Silicon developing the ultra-low power Think-Series GPUs of the company before moving to the business side.

As the CEO of Think Silicon he was responsible for corporate strategy, business development, funding, sales and IPR among the rest. In 2020, Think Silicon was acquired by Applied Materials, global leader in materials engineering solutions for the semiconductor industry. Since then, George is Country President and Managing Director of Think Silicon, an Applied Materials Company, leading the aggressive growth of the team and business with his start up mentality.

Dr. Iakovos Stamoulis

Senior Product Development Director & Co-founder of Think Silicon S.A.

Iakovos has over 20 years of experience in the Computer Graphics and Semiconductor industry. As CTO of Think Silicon, he built multidisciplinary teams codesigning HW and SW that deliver Ultra Low power Graphics Processors to market. He has a strong technology track record in bringing new technology innovation from concept to implementation and subsequently to commercial products. He has worked for Advanced Rendering Technology in the UK and USA, where he co-engineered the first Ray Tracing Graphics Engine chip. In Greece, he successfully led teams of engineers in Atmel's Multimedia and Communication Business Unit to the tape out of numerous devices that reached mass production in the multimedia and wireless markets. He has a D.Phil from the Centre for VLSI and Computer Graphics of the University of Sussex, UK.

Dr. Georgios Keramidas


Dr. Georgios Keramidas is currently working as a contractor in the company. He is mainly involved in designing the new AI products of the company and in extending the IP portfolio of the company. He has a successful track record in delivering commercial projects as well as national and collaborative programmes focusing on low-power GPU and processor architectures. Georgios has published over 75 scientific papers in low power processors, memory design, and memory-oriented compiler optimizations. He currently holds 13 patents, with another four pending, and his work has received over 1100 citations. Georgios also serves as an Assistant Professor at the Informatics Department of the Aristotle University of Thessaloniki, Greece in field of computer architecture.

Ulli Mueller, MSc

IP Licensing, Sales & Marketing Director

Ulli has over 20 years of experience in IT semiconductor industry. Previously he worked in different positions as manager in digital TV,  GPU and system memory at AMD Inc., Toronto, Canada. He also played key roles at ATI Technologies Inc. and as a Director in Hauppauge Computer Works Inc., Europe/US by developing the business for SoC DTV decoder ASICs and multiple discrete multimedia consumer products. As Global IP Licensing, Sales & Marketing Director at Think Silicon an Applied Materials Company, he is responsible for the IP technology contracting, business development and product marketing. Ulli holds an MSc in computer engineering from the University of Furtwangen, Germany.

Dr. Vassilis Androutsopoulos

Director of Product Management

Vassilis is the Director of Product Management for Graphics and AI at Think Silicon, leading the complete lifecycle of Think Silicon’s GPU and AI products. In his role he is responsible for market requirements’ collection, product conceptualization and roadmap and go-to-market strategy. With experience spanning over 20 years, he started his career at Imagination Technologies as a key member of the Power VR hardware team that developed a successful line of Video & GPU processor IP. He then worked at Arm for 14 years where he held several leading roles in Application Engineering, Product Management and Segment Marketing. Vassilis holds a PhD in Digital System Synthesis and an MEng degree in Electrical & Electronic Engineering from Imperial College London.

Aspasia Pispa

HR Business Partner

Aspasia Pispa is a seasoned HR executive with unprecedented 25+ yrs demonstrated history in the Pharmaceutical and Marine Sector. She has started her career in the pharmaceutical industry in 1989 following her graduation from the College Informatique and then from the University School of Canada where she holds a Bachelor of Science. Through her career has led European projects on M&A’s, SWAPS, Divestments, business transformations and change management projects in a collaborative, business acumen and results-oriented mind set with credibility balancing the strategic with the operational to drive business results.

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