SECAI Core · phase 3 of 15

Data engineer

A role responsible for building and maintaining the pipelines that acquire, clean, label, and deliver data with appropriate quality controls

The Explain card

Plain English
A data engineer builds and maintains the pipelines that acquire, clean, label and deliver data, with the quality controls that keep it trustworthy.
Example
A data engineer writes the job that pulls threat feeds nightly, validates their schema, deduplicates entries and lands a clean dataset for the detection team's models.
Why it matters
Data engineers own the plumbing attackers would love to poison. Their access to raw data and pipelines makes them both a security ally and a high-value target.
Hook
The plumber of AI; if the pipes are compromised, so is everything downstream.

Where it sits in the deck

Phase 3: Data Fundamentals: Types, Pipelines, and Preparation

Models are only as good as their data — understand the raw material and the engineering that shapes it before covering how it flows or breaks.