My Experiences

Description

• Built a full-stack welding cost calculator with a conversational AI chatbot using Next.js, FastAPI, and LangGraph, replacing a stateless print-only tool with a persistent, multi-user workspace.
• Designed an agentic workflow that separates intent classification from deterministic cost math, with human-in-the-loop interrupts and Pydantic-validated structured outputs to keep calculations correct and auditable.
• Implemented full persistence using Supabase Postgres for conversation threads, saved welds, and projects, enabling users to revisit estimates and organize work by job or quote.
• Deployed to Fly.io via Docker multi-stage builds and GitHub Actions CI/CD, with JWT auth, idempotent API endpoints, and a LangSmith evaluation suite for regression monitoring.

Technologies

Description

• Eliminated months of manual file-handling delays by automating the migration of 15,639 historical welding-procedure files from SharePoint, saving an estimated $15,000+ in engineer time at prevailing BC welder rates.
• Built an authenticated PowerShell pipeline via Azure App Registration and a Python decision engine using regex-based path exclusions, filename allowlists, duplicate detection, and a depth-first search over a nested regex lookup table to classify and route each file automatically.
• Implemented CSV logging that tracks company-level and file-level outcomes, enabling full auditability and iterative improvement across migration runs.

Technologies