Management Team

Charles Hosono, CEO

Charles Hosono brings over 30 years of experience in the global semiconductor industry to Presto, alongside a proven track record of supporting high-growth international companies. He began his career as a Radio Frequency (RF) integrated circuit design engineer before holding sales and marketing leadership roles at NXP and Infineon Technologies.

A recognized expert in business growth and organizational structuring, Charles Hosono notably contributed to the success of LBO operations at Linxens as Global VP of Sales and Marketing and President of the Asia-Pacific region.

With a robust international background, Charles spent nearly 15 years in Asia between Singapore and Shangai, providing him with a global perspective on semiconductor market challenges.

Christian Käppner, CFO

Christian Käppner joined Presto Engineering in February 2023 with 25 years of financial experience in the high-tech and pharmaceutical industry with strong international background comprising leadership and executive positions in mid-size company as well as large corporations.

Throughout his career, Christian has developed financial teams with positioning the function as a collaborative business partner, managing growth and strengthen systems and processes.  He has also successfully conducted significant transformational projects in multi-cultural environments. Before joining Presto, Christian was Chief Financial officer of Provepharm Life solutions and held several leadership positions at Thales, Parametric Technology, Heptagon Oy and Inside Secure.

He received a Master in Finance from Aix-Marseille University.

Didier Narassiguin, VP IP & NPI 

Didier has over 25 years of international experience, with a mix of business and engineering experiences, involving Hardware and Software product development.

He first worked as an electronic engineer and project manager for Texas Instruments for 15 years in France and Dallas, TX. After several positions in the wireless industry, Didier held a senior-level position in California, establishing the first US subsidiary of a French software company in the Silicon Valley. There he managed a team of engineers developing embedded software solutions for Intel chipsets. He moved back to France in 2021 where he was responsible for an R&D business unit in the IoT field.

Anders Andersen, VP Production

Anders has more than 13 years of experience in Operations and Quality in the semiconductor business.

Anders joined Presto in 2018 as Team Leader for Production Engineering and then served as Supply Chain Director in 2022, before being appointed VP Production in 2023.

He was previously with Mellanox Technologies / IPtronics as Director of Operations for 8 years, where he managed all operations activities for high-speed optical communication ASICs. Prior to that, Anders spent 13 years with Bossard AG, holding several leadership positions within Quality, IT, Project and Process Management, both in Europe and North America.

Frédéric Valentin, VP Sales & Marketing

Frédéric brings over 25 years of experience in the semiconductor industry, with a strong track record in sales and marketing leadership and international team management across the Industrial, Medical and Automotive sectors.

Most recently, he served as Senior Vice President Sales EMEA at ams OSRAM, where he led strategic customer engagements and drove commercial growth across the region. His career began with engineering roles at Siemens, Infineon and Thales, before moving into Product Line Management at ON Semiconductor, overseeing global portfolios of wired and wireless connectivity solutions for the Industrial IoT space.

Frédéric combines a deep technical background with business acumen, having successfully managed complex product lines and global multicultural teams. He holds a Master’s degree in Microelectronics from ENSICAEN, and a diploma in Physics from Pierre and Marie Curie University in Paris.