Portfolio

John DeGraft-Johnson

Software engineer · AI · data infrastructure

UK NHS Health Risk Map
Live

Patient disengagement risk visualised by ICB and LSOA across NHS England.

GIS · ArcGIS · Next.js
Patient Behaviour Prediction Pipeline
Live

Early-warning AI that scores every patient on their risk of disengaging from GP care — before it happens.

FastAPI · Gemma · Neo4j
StockHub
Live

Options activity dashboard that surfaces unusual open interest shifts across all 12 GICS sectors.

React · Options Flow · AI Town
NHS Clinical Decision Support RAG Assistant
In Development

Answers NICE guideline queries in plain language with exact citations, SNOMED CT codes, and a mandatory human-review flag on every response.

Clinical AI · RAG · FHIR
AI Proposal Intelligence
Open Source

Auto-generates AI architecture diagrams and embeds them inline into .docx proposals. Includes a 32-tool MCP server for LLM-driven deck generation.

Document AI · MCP · Agentic