Leon Matheus

Staff Data Engineer · Curitiba, Brazil

Leon Matheus

Data is shared meaning. I work on the structures that keep it alive: architecture, modeling and governance for organizations that need to remember.

A cartoon of Leon in a violet t-shirt, smiling, releasing glowing seeds from his hand toward the sunflower of data.

What I keep coming back to

  1. Leon assembling an arapuca, a wooden bird trap, with glowing data caught underneath.

    Data engineering is about building traps.

    Not tools, not just data: abstractions of meaning that let an organization actually perceive what it does.

  2. Leon on a cushion with a laptop, sharing a small graph with a friendly robot.

    Oriented to data, not only by data.

    When AI agents become the connective tissue between systems, what matters is that data is understood by people, agents and machines.

  3. Leon surfing a golden wave on an open book.

    Fundamentals outlast waves.

    Twenty years of hype taught me that concepts are more portable than any tool that implements them.

Latest writing

  1. Note
    A machine that doesn't know how to remember

    The enterprise produces knowledge all day and forgets what it wanted to know. A data model is the minimum shared truth that lets it remember.

  2. Essay
    There is no generic data

    Becoming data-driven is not trading intuition for KPIs. Data always has a shape, a source and a life cycle, and it takes a culture to keep it meaningful.

  3. Essay
    The mystery of knowledge

    We've invested like never before in computing to extract knowledge from raw data. These technologies seem to demand that we think better, not less.

  4. Essay
    Oriented to data, not only by data

    Databases are no longer just backing services. With AI agents as connective tissue, modeling moves up to the layer of meaning.

  5. Essay
    Fundamentals outlast waves

    Twenty years of innovation and hype in analytics. Fundamental ideas last longer and travel further than any tool.

  6. Note
    Modeling is not architecture

    The medallion architecture organizes a pipeline into layers. It says nothing about how to model the information.

All writing →