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iroussos25/README.md

Hi, I'm Giannis Roussos πŸ‘‹

AI Implementation Engineer | HealthTech & Mission-Critical Systems

"From Healthcare to HealthTech: Building production-grade AI systems with ICU-level discipline."


πŸš€ The 90-Day Sprint: 30 Repositories

I don't just use AI; I orchestrate it. In the last 90 days, I transitioned from a clinical professional to a technical builder by shipping over 30 projects, culminating in a full-scale Clinical Decision Support Platform. I specialize in high-velocity implementation, turning complex clinical requirements into "zero-fail" code.


πŸ”¬ Featured Project: AI Clinical Context Agent

A full-stack clinical intelligence platform built to simulate hospital-grade decision support.

Live Demo | Architecture Deep Dive

πŸ›‘οΈ Engineering Highlights:

  • Resilient AI Orchestration: Implemented a Model Fallback Chain (Gemini 2.5 β†’ Flash Lite β†’ Gemma 3) to ensure 99.9% uptime despite API quotas or latency issues.
  • Clinical RAG Pipeline: Developed a semantic search engine using Supabase pgvector and 768-dim embeddings with custom chunking logic for unstructured medical notes.
  • Interoperability: Built a FHIR R4 Explorer that pulls live data from HAPI FHIR servers directly into the AI workbench.
  • Security & Ops: Integrated Zod-validated request guarding, Upstash Redis rate-limiting, and a structured Audit Logging system for HIPAA-aware traceability.
  • Medical Grounding: Live PubMed API integration to cross-reference AI analysis with peer-reviewed literature.

πŸ› οΈ The Stack

  • Core: Next.js 15/16 (App Router), TypeScript, React 19.
  • AI/Data: Vercel AI SDK, Google Gemini/Gemma, Supabase (pgvector).
  • Infrastructure: Redis (Upstash), GitHub Actions (CI/CD), Vitest (Integration Testing).
  • Domain: HL7 FHIR R4, PubMed eUtils, Clinical Workflow Automation.

πŸ₯ Why This Matters

As a former Special Forces Leader and ICU Nurse, I know that in clinical environments, "it mostly works" isn't good enough. I build software that prioritizes:

  1. Observability: Real-time metrics and latency benchmarking.
  2. Explainability: "Show-your-work" panels with retrieved evidence chunks.
  3. Reliability: Fail-fast environment validation and robust error handling.

LinkedIn | Portfolio | Status: US Citizen | NC-Based | Available for HealthTech Engineering Roles

Pinned Loading

  1. ai-clinical-context-agent ai-clinical-context-agent Public

    TypeScript 1

  2. fhir-dashboard fhir-dashboard Public

    TypeScript 1