Building Charlie. One sprint at a time.
This Engineering Journal documents the complete process of building Charlie from the ground up. Rather than presenting only the finished result, every sprint captures the engineering process itself—from the initial idea and architectural decisions to implementation, experimentation, and the lessons learned along the way.
The goal is to make modern AI engineering transparent.
Each sprint introduces a new concept, explains the underlying theory, implements it, and demonstrates a tangible, working result. Together, these sprints gradually evolve Charlie into a modular AI platform whose architecture is fully understood—not treated as a black box. The reference architecture will be continuously updated.
If you’re curious about modern AI engineering, welcome to the journey.
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Sprint B.1: Building the Engineering Truth Pipeline
« Stream B (Charlie Lab) | Sprint 1 ≫ This sprint established the first implementation of Charlie’s continuous engineering architecture. Instead of treating conversations as the primary source of continuity, the system now extracts reusable engineering knowledge from completed engineering sessions and preserves it as structured artifacts. The Documentation Factory became the first pipeline for transforming…