Toronto-based AI Engineer building LLM systems since the first public releases. I design and ship production RAG pipelines and multi-agent orchestration systems, and I evaluate them properly: evaluation harnesses with measured pass-rate improvements, not demos. Founder of Jesun.Ai. My background combines that engineering with published, peer-reviewed ML research and an MSc in Data Analytics. Current focus: agentic systems, context engineering, and retrieval quality in production.