Co-founder of Sientia

Sam Leslie-Miller

Sam Leslie-Miller is co-founder of Sientia, a card-linked offer (CLO) agency and tech platform connecting brands with the UK's leading banking and fintech publishers. He brings over a decade of hands-on CLO and card data experience: as a founding team member at Fidel API, where he helped grow the business from five people to 180 globally before its acquisition, and subsequently as managing director of Finfare UK, where he led the launch of the Santander CLO programme. At Sientia, Sam leads commercial operations and brand partnerships, helping businesses across retail, travel, hospitality and beyond access open banking-powered CLO through a single contract and reporting framework.

    All Sessions by: Sam Leslie-Miller

    • Closing the Loop: How Transaction Data is Changing Affiliate Marketing

      As affiliate marketing evolves beyond clicks, transaction data is opening new pathways for brand discovery and customer engagement. Learn how CLO and open banking