Presented By
O’Reilly + Cloudera
Make Data Work
29 April–2 May 2019
London, UK

The vindication of big data: How Santander UK uses Hadoop to defend privacy

Maurício Lins (everis consultancy UK), Lidia Crespo (Santander UK)
16:3517:15 Wednesday, 1 May 2019
Case studies, Strata Business Summit
Location: Capital Suite 12
Average rating: ****.
(4.50, 4 ratings)

Who is this presentation for?

  • Those interested in GDPR and big data architecture



Prerequisite knowledge

  • Familiarity with big data technology and GDPR

What you'll learn

  • Explore new patterns and an approach to deal with obscuring and privacy challenges


Big data is usually regarded as a menace to data privacy. But with data privacy principles and a customer-first mindset, it can be a game changer. Maurício Lins and Lidia Crespo explain how Santander UK applied this model to comply with GDPR, using graph technology, Hadoop, Spark, and Kudu to drive data obscuring, data portability, and machine learning exploration.

Traditionally, Santander UK worked with static systems, where an in-depth one-off analysis was performed as a project. However, the variety of the data in its big data platform and the speed of growth pushed the company to look for new models and technologies to overcome the challenge of data privacy.

In an environment where new data is loaded every day, making sure all data is catalogued and the inventory is up to date when rules or scope changes required a new approach to metadata management. Configurable and flexible solutions are one of the key investments for the privacy solution. In addition, the processing power necessary to scan all the data lake contents daily to identify personal information and the complexity of a self-service model with multiple silos and governance paths presented new technology challenges for the GDPR teams.

Maurício and Lidia explore some of these challenges and outline the architecture and technology Santander UK implemented to make sure its customer data is identified, protected, and provided to customers adequately.

Photo of Maurício Lins

Maurício Lins

everis consultancy UK

Maurício Lins is a big data architect at everis consultancy UK. He has 14 years of experience in the IT universe with expertise defining and developing big data architectures and batch and streaming approaches.

Photo of Lidia Crespo

Lidia Crespo

Santander UK

Lidia Crespo is a technical business manager on the CDO team at Santander UK, where she leads the company’s big data governance activities. She and her team have been instrumental in the adoption of the technology platform by creating a sense of trust and with their deep knowledge of the data of the organization. With her experience in complex and challenging international projection projects and a background in audits, IT, and data, Lidia brings a combination difficult to find.