
John Rainey
Product Leader | Startup Advisor | Non Executive Director
Cambridge, England, United Kingdom
Joined April 2026
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Summary
John Rainey is a highly experienced product leader and startup advisor with over two decades of experience in product management, digital product commercialization, and scaling B2B businesses. His expertise spans launching and optimizing products in both the UK and US markets, as well as leading cross-functional teams in technology companies during periods of significant growth. fractionals+2
He combines a strong technical background with business acumen, holding an Electrical Engineering degree from Georgia Tech and an MBA from London Business School. This educational foundation enables him to align diverse strategic viewpoints across various leadership roles and understand the technical intricacies of product development. fractionals+1
Currently, John is actively involved in venture capital and advisory roles, serving as an Operating Partner (Product) at GALLOS Technologies and a VP Product at StirlingX. He also holds non-executive director positions, such as at Beamish Museum, demonstrating his commitment to contributing to various sectors. fractionals+4
A notable achievement includes leading Simply Business's strategic expansion into the US market, which involved directing UK and US product teams to internationalize their insurance technology platform and successfully launching new insurance products. portfolio-collective
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