Management team

Chairman – Robert Jelski

Mr. Jelski has both extensive investment and industrial experience. Until recently and since 2000, Robert was sector head and partner in the global 3i venture team. Prior to that, he was divisional president and general manager within Danaher and Eurotherm in the UK and France. He started his career in HP’s R&D department and thereafter became National Semiconductor’s marketing manager for telecommunications in Europe.

Robert has extensive knowledge of the electronics/semiconductor sector in Europe and Asia, particularly fabless semiconductor operations, opto electronics, nanotechnology, component test and packaging and capital equipment as well as a good knowledge of the industrial instrumentation markets. He has also been actively involved in the FSA European Advisory Council, IBM’s Power.org VC council as well as a speaker at numerous semiconductor and nanotechnology conferences.

Robert obtained a BSc in Electrical & Electronic Engineering, MSc Digital Controls & Communications and an MBA from INSEAD. In addition to his native English, Robert speaks French and German.

CEO – Simon Calder

For the decade before taking up his Chief Executive role at eoSemi in 2013 Simon was running UK-based semiconductor related start-ups, most notably SpiraTech and Cambridge Mechatronics. He was also a senior sales and marketing executive at one of the 1990's most successful semiconductor start-ups, MMC Networks, where he enjoyed both an IPO and a $4.5B trade sale (in 2000). Prior to these early stage positions Simon spent many successful years in Sales and/or Marketing with semiconductor leaders NEC and LSI Logic. Simon's career has taken him all over the world including short stints in Germany and Italy and a nine year stay in Silicon Valley. Simon has a degree in Electrical & Electronic Engineering from the University of Edinburgh.

CTO – Hedley Rokos

Hedley has spent his entire career at the bleeding edge of communications technology. While at Plessey, he worked on early Optical Transmission systems and when he was at Xerox he was part of the team that gave the world Ethernet. After he joined STL in Harlow (UK) he became a world renowned authority on crystal oscillators, critical components in any wireless communication system, and was part of the team that delivered the first working GSM systems. Hedley formed his own company Adpatalog in 2005 and enjoyed several successful years developing precision frequency reference solutions for customers around the world. In 2013 Adaptalog sold some of its IP to eoSemi and Hedley became eoSemi's CTO. Hedley has a degree in Mathematics from the University of Cambridge.

VP of Engineering - Matt Ball

Matt started his career with Fujitsu at its world renowned design centre in Maidenhead, working on industry changing semiconductors for the telecommunications industry. Fujitsu took Matt to Manchester where he supported Mixed Signal ASIC development across Europe.

Matt’s first management role was at Jennic in Sheffield where he led a team of engineers that developed the world’s first 802.15.4 single-chip radio solution and its lower power/lower cost follow-on project. Both projects yielded functional 1st pass silicon.

Matt spent a period of his career as an independent semiconductor design consultant, where he worked with many companies, most notably, Intel and Innovision.

Immediately prior to eoSemi Matt worked for CSR (then Qualcomm) in Manchester leading various CMOS radio and large System-on-Chip developments.

Matt joined eoSemi in early 2015 to lead the engineering effort and to grow the team in terms of numbers and expertise. He has been successful in attracting some exceptional talent and now is focussed on keeping his record of functional 1st pass silicon.

Matt has a Degree in Electronic Engineering from the University of Nottingham.

Director of Finance – Alastair Walmsley

Alastair is a Chartered Accountant with a broad range of financial experience at main board level in both listed and private equity backed companies. Alastair trained with Coopers & Lybrand in Manchester and, over the last six years, has specialised in working with a portfolio of early-stage technology ventures.