John Valentine is an experienced operations executive with a strong background in technology and innovation. Currently serving as VP of Operations at Refeyn since November 2025, Valentine focuses on advancing biomolecular analysis. In addition, Valentine is a Director at VALTEC Advisory Ltd, providing strategic guidance to tech spinouts and early-stage ventures. Previously, Valentine held leadership roles at Adaptix Ltd, Rockley Photonics Inc., Terumo Aortic, Cirrus Logic, pureLiFi Ltd, Hydro Group Ltd, Nautronix, and Agilent Technologies, contributing to significant advancements in medical devices, imaging technologies, and communication systems.
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