Gareth leads Platform API Gateway & Access at the London Stock Exchange Group.

He is a Senior Digital Product professional based in London, UK, with a recent focus on API Management and Governance and sharing his knowledge via speaking publicly.

In the past Gareth worked in Mobile and Web Product Design, Innovation and Ownership, Web Development, and User Experience Product roles at IBM and other companies. He specialises in leading teams in the pursuit of releasing a product, working with the business to find out their jobs to be done via user and consumer journeys, dealing directly with customers – internal and external - and helping developers & designers to implement solutions.

I’m Emmanuel, an entrepreneur, product management executive, and consultant at Level 250 with over 15 years of experience shaping API products.

I’ve led large API programs in fintech for Verisk, Moody’s, and Precisely, and served as VP of Product for some of the world’s most influential API tools—like API Blueprint at Apiary (550,000+ APIs), Oracle’s first Cloud-Native API Gateway, and Swagger at SmartBear (750,000+ APIs).

Over the years, I’ve consulted with everyone from Fortune 500 CEOs to startup founders, engaging with thousands of API providers and consumers to help them build winning products and exceptional developer experiences.

My passion is to make APIs more impactful and developer-friendly, which is why I created API Product Mastery for Experienced PMs: to share my lessons learned and help Product Managers fast-track their careers.

Join me to gain practical insights, avoid common pitfalls, and learn how to deliver API Products that enable great user experiences—without repeating the mistakes I’ve already made along the way.