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ai-engineer
Jason Liu
Instructor — typed, validated structured output from language models.
Created Instructor, a library that makes language-model responses conform to a declared schema with validation and retries, now ported across Python and TypeScript stacks. Consults on retrieval and recommendation systems and writes about evaluation, query understanding, and the reporting layer teams skip.
Technical stack & depth
Prompting
Prompt design, iteration, and instruction-following for a specific job.
Retrieval / RAG
Indexing, chunking, reranking, and grounding answers in a corpus.
Evaluation
Evals, traces, and a quality bar that is not a vibe check.
Engineered solutions
- Repository567-labs/instructorgithub.com
Created and maintains Instructor, which enforces a response schema with validation and retries.
- Write-upjxnl.co writingjxnl.co
Public essays on RAG evaluation, query segmentation, and consulting practice.
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