Professional profile
Don Le
Staff Engineer · Data Platforms & Applied AI
Use your browser's Print command to save a copy.
Current role
Staff Engineer / Tech Lead — Data Platform at mod.io
My professional focus is data-platform engineering. Alongside my current role, I explore applied AI through independent projects in retrieval, conversation execution and recommendation ranking.
Engineering focus
The selected work below centres on practical engineering decisions: how to retrieve useful context, manage a model response through its execution lifecycle, and separate candidate retrieval from ranking.
Selected projects
-
Local-first RAG for coding agents
Making project context searchable for coding agents through local embeddings and a vector index. Separate indexing and search tools support explicit source selection, while retrieved passages include source references for follow-up.
Developer-tooling prototype
-
Personal AI assistant
Managing conversation execution around streamed model responses, bounded recent context and persistent execution state. Request replay and conflict handling sit alongside budget admission and cancellation controls.
Local prototype · In development
-
Two-stage recommendation engine
Separating semantic candidate retrieval from learning-to-rank over MovieLens data. Rating-weighted user vectors guide retrieval, a pairwise ranker orders candidates, and a popularity fallback handles unknown users.
ML prototype