Capital One Tech – Medium

Capital One Tech

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Innovating financial services through customer-centered AI

We’re building the future of financial services through patented AI and a deep focus on customer-centered innovation.

Jun 24

Animated group of people in a marketplace setting.

Jun 24

Published in

Design for testing Part 2: Business vs. application logic

Separate business and application logic to balance unit, integration and E2E tests across the SDLC for higher test ROI.

14h ago

Test automation pyramid showing many unit tests at the base, fewer service/integration tests in the middle and few UI/E2E tests at the top.

14h ago

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DynamoDB Streams Lambda pattern: Best practices

Explore the DynamoDB Streams Lambda sandwich pattern with scaling limits, concurrency challenges and cost trade-offs.

1d ago

Lambda sandwich pattern: Fan-in > DynamoDB > DynamoDB Streams > Fan-out

1d ago

Published in

Understanding the evolution of data lakes

Tracing the journey from Hadoop to Snowflake and Databricks and how lakehouse architecture is reshaping data platforms.

4d ago

Understanding the evolution of data lakes

4d ago

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Lakehouse format convergence & data interoperability

Open table formats like Delta Lake and Apache Iceberg are converging to enable true interoperability across data platforms.

5d ago

Diagram showing Delta Lake UniForm metadata layers. A single copy of table data stored in Parquet format supports multiple metadata layers including Delta Lake, Iceberg and Hudi.

5d ago

Published in

Capital One at EMNLP 2025: Trust and efficiency in AI

Explore how Capital One technologists are tackling critical challenges in data scarcity, LLM consistency and reliability at EMNLP.

6d ago

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6d ago

Published in

UVA School of Data Science: Capital One Fellows 2025–2027

Capital One and the University of Virginia celebrate the 2025–2027 data science fellowship awardees.

Nov 10

Smiling woman holding tablet stands in front of projector with lines of code on the screen as students look on

Nov 10

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Capital One deepens UVA partnership to advance AI research

The new $4.5 million partnership will establish the Capital One AI Research Neighborhood and PhD Fellowship Awards.

Nov 7

female with dark hair and a brown scarf sitting at a desk smiling towards the camera with other people blurred in the background

Nov 7

Published in

Capital One Fellows for AI 2025–2026

Capital One Fellows PhD award recipients for 2025–2026 advancing research in AI.

Nov 6

Student on laptop laughs with peers

Nov 6

Published in

Enterprise platform strategy at scale

Capital One shares lessons from enterprise platform strategy, including convergence, investment models and long-term stewardship.

Nov 6

Illustration of man climbing up steps, with the steps depicting the sequence of a tree growing from a seed

Nov 6

Capital One Tech

Capital One Tech

From our founding, we’ve used tech to change the banking industry. Today, our innovations are making banking better for tens of millions of our customers.

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