I spent nearly three decades at JPMorgan working in derivatives, collateral and counterparty risk, helping build many of the frameworks and market practices that now underpin modern XVA, clearing and collateralised trading.

My work sat at the intersection of pricing, funding, capital and market structure, alongside extensive interaction with ISDA, CCPs, regulators and industry working groups during a period when the derivatives market was evolving rapidly in response to the financial crisis. A significant part of that work involved helping make the system safer, more transparent and more robust from both a risk and infrastructure perspective.

After nearly three decades at JPMorgan, I wanted the freedom to work across a broader range of businesses, projects and ideas.

Alongside my specialist derivatives advisory work through Positive Sum, I now build and advise businesses across technology, operations and practical service industries. Some remain highly quantitative and institutional in nature; others are practical operational businesses focused on solving everyday problems more efficiently through better systems and decision-making.

Over the years I have found that many industries suffer from the same underlying issue: decisions are often made in isolation, without considering how the wider system behaves. My interest has always been in understanding those interactions — and designing structures that work in practice rather than simply looking good on paper.