Portfolio

Independent repository: YAML-driven workflow automation backend with async job processing and SSE streaming.

Independent repository: real-time voice AI with WebSocket audio streaming, voice activity detection, Deepgram STT/TTS, and barge-in support.

Upload CSV/Excel for auto-profiling, interactive dashboards, marketing attribution (4 models), anomaly detection (Z-score/IQR), predictive modeling with SHAP, time-series forecasting, K-means/DBSCAN clustering, feature engineering lab, model observatory (5 models), hyperparameter tuning, statistical testing, KPI framework, dimensionality reduction, advanced anomaly detection, and regression diagnostics.

25-page interactive finance dashboard answering 17 business questions: credit risk modeling (SHAP/RF), stress testing (CCAR/DFAST), VaR analysis, A/B testing, fair lending geography (real CFPB HMDA data), causal inference, and more. Delivered as dashboard, 8-tab Excel workbook, 11 SQL query templates, 15 Jupyter notebooks, and written business memos. dbt analytics layer (DuckDB + Snowflake).

Customer retention and delivery performance analysis on 100K+ real orders from a Brazilian e-commerce marketplace. Key findings: 93% of customers never return (vs 25-30% industry benchmark), late deliveries cost 1.2 review points, K-Means segmentation surfaces 4 actionable customer segments. Delivered as 10 SQL queries, EDA + segmentation notebooks, interactive dashboard, and written business memo.

Upload PDFs/DOCX, ask questions, get cited answers. Hybrid retrieval (BM25 + vectors), cross-encoder re-ranker, query expansion, retrieval evaluation (MRR, NDCG@K), 5 chunking strategies with comparison, citation quality scoring, redundancy detection, RAGAS-style evaluation, conversation manager, document graph, batch processing, JSON/CSV export.

Enterprise-grade retrieval-augmented generation with hybrid search (BM25 + dense vectors), reciprocal rank fusion, ChromaDB vector store, FastAPI REST API with health/metrics endpoints, and Grafana observability. Designed for principal AI engineer portfolio demonstration.

YAML-configurable web scrapers, competitor SEO analysis with gap detection, asyncio scheduler with change callbacks, backlink estimation, data validation rules engine, diff visualization, keyword extraction (TF-IDF n-grams), content scoring, data quality profiler, content intelligence, and data pipeline.

Full-stack AI dashboard with real-time metrics, chat interface, and document processing UI. Dark-mode design with Recharts analytics, shadcn/ui components, and responsive layout.

YAML-driven GHL bot framework supporting real estate, home services, and legal verticals. Configurable question flows, multi-vertical prompt templates, and GoHighLevel CRM integration.

YAML-defined async workflow engine with SSE progress streaming and 3 built-in example workflows. Background task queue with ARQ, real-time status updates, and webhook notifications.

Real-time voice AI pipeline: OGG to FFmpeg to VAD to STT to Claude to TTS, with sub-3s round-trip latency. WebSocket streaming, Silero-ONNX voice activity detection, Deepgram speech-to-text.

Drop-in AI chat widget with a single script tag. Full SaaS product: FastAPI + pgvector + RAG + WebSocket + Supabase JWT auth + Stripe billing. Shadow DOM isolation, streaming responses, Next.js admin dashboard. Live demo with no account required.

Document extraction API with async job processing, hybrid retrieval, and evaluation gates. Included here as secondary proof because it is already featured higher on the page.

Knowledge graph-enhanced RAG system. Entity extraction (spaCy + Claude), NetworkX graph traversal, BM25 + graph fusion retrieval, fact-checking, side-by-side comparison: Basic vs GraphRAG.