Reliability is often framed as an infrastructure problem, but at Banking, it begins with data. Customer data is a core SRE dependency that drives data quality, fraud prevention, knowing your customer, and user trust. When upstream data is delayed, malformed, duplicated, or semantically inconsistent, no amount of autoscaling or incident response can preserve a seamless experience.
This talk explores why customer data quality, lineage and observability must be treated as first class reliability concerns. By shifting reliability thinking left toward data consistency, validation, and monitoring at ingestion, fintech teams can reduce incident blast radius, improve MTTR, and protect customer confidence where it matters most: at the source.
Deniz Yalcin is head of Customer Data at ING Germany, leading teams responsible for customer data processes and platform integrity. With a background in SRE and IT service management, coaching, and large scale organizational change, she works at the intersection of technology, governance, and leadership.
William Ravensbergen is a Developer Advocate at ING, where he focuses on building and nurturing a global SRE minded community. With a long background in DevOps, SRE, and IT operations, he brings practical experience from running large scale banking platforms into community building, advocacy, and reliability culture.
