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Praciller/README.md

Pakon Poomson — AI Engineer building reliable RAG and agent systems

Pakon Poomson

AI Engineer building reliable RAG and agent systems on production-minded data platforms.

Python · FastAPI · LangGraph · PostgreSQL · dbt · PySpark · React

Portfolio · LinkedIn · Email

Start with RAG Triage · RetailGuard · Thai Procurement Intelligence · Explainable Cancer · Urban Mobility · Thai Review

Selected engineering results

  • Customer Support RAG Triage Agent — Built a seven-node workflow with retrieval, grounding checks, inspectable traces, and deterministic evaluation.
  • RetailGuard Data Platform — Built an incremental retail platform with PII protection, blocking quality gates, reconciliation, and two-run idempotency proof.
  • StockRush Go — Demonstrated 1,000 concurrent purchase attempts, exactly 100 successful reservations, and zero overselling.

Start Here

Customer Support RAG Triage Agent

A typed support workflow that retrieves relevant cases, checks grounding, exposes every decision in a trace, and routes the final action to a human reviewer.

Core stack: Python · FastAPI · LangGraph · Qdrant · FastEmbed · React
Repository · Live demo

RetailGuard Data Platform

An incremental retail pipeline that protects customer data and blocks warehouse loads when quality or reconciliation checks fail.

Core stack: Python · PostgreSQL · FastAPI · PySpark · DuckDB · Airflow
Repository · Live dashboard

Thai Procurement Intelligence

A bilingual public-data platform that keeps source provenance visible across governed ingestion, search, analytics, and cited AI assistance.

Core stack: Next.js · FastAPI · PostgreSQL · deterministic hash-vector retrieval · application-side similarity
Repository · Live demo

Official/local snapshot evidence remains separate from the hosted synthetic demo.

Additional selected projects

Project Engineering focus
urban-mobility-data-platform Validated mobility ingestion, DuckDB/dbt marts, orchestration, and a read-only analytics API.
thai-review-sentiment-intelligence Thai sentiment classification with model governance, confidence routing, explanations, and monitoring.
climate-co2-forecasting-ml Leakage-safe time-series forecasting with backtesting, interval evaluation, anomaly signals, and API contracts.
stockrush-go Concurrency-safe flash-sale reservations with atomic inventory updates and reproducible zero-oversell evidence.
receipt-ai-expense-tracker Human-reviewed Thai and English receipt parsing with schema validation and browser-local persistence.
ai-resume-matcher Validated PDF-to-job analysis with typed reports, provider routing, and hiring-scope safeguards.
explainable-cancer-diagnosis-ml Educational tabular ML comparison with SHAP explanations and an explicit medical disclaimer.
smart-qr-kitchen-pos QR ordering and kitchen operations with server-validated pricing and controlled ticket transitions.
Fyrre---Magazine-Website- Accessible, responsive editorial browsing built from a Figma community design with tested content routes.
my-portfolio Recruiter-facing technical evidence hub for public AI and data engineering work.

Core stack

AI systems: RAG · LangGraph · retrieval evaluation · grounding checks · provider routing
Data platforms: PostgreSQL · PySpark · DuckDB · dbt · Airflow · data quality
Application delivery: Python · FastAPI · TypeScript · React · Next.js · Docker · GitHub Actions

Credentials

Contact

For AI engineering opportunities, please use the portfolio, LinkedIn, or email links above.

Pinned Loading

  1. customer-support-rag-triage-agent customer-support-rag-triage-agent Public

    Deterministic LangGraph support triage with Qdrant retrieval, grounded responses, evaluation, and an inspectable React console.

    Python

  2. explainable-cancer-diagnosis-ml explainable-cancer-diagnosis-ml Public

    Explainable breast cancer classification with scikit-learn, PyTorch, SHAP, FastAPI, React, Docker, and CI.

    Python

  3. thai-procurement-intelligence thai-procurement-intelligence Public

    Thai procurement intelligence with official/local snapshot evidence and a synthetic hosted demo.

    Python

  4. retailguard-data-platform retailguard-data-platform Public

    End-to-end retail data platform: PostgreSQL/FastAPI to PySpark, Airflow, BigQuery, and Looker Studio with PII controls and cost guardrails.

    Python

  5. thai-review-sentiment-intelligence thai-review-sentiment-intelligence Public

    End-to-end Thai NLP sentiment intelligence platform with scikit-learn, WangchanBERTa, FastAPI, React, and Docker.

    Python

  6. urban-mobility-data-platform urban-mobility-data-platform Public

    End-to-end urban mobility data engineering platform using NYC TLC taxi trip Parquet data, DuckDB/PostgreSQL, dbt, Dagster, FastAPI, and a React dashboard for ingestion, validation, analytics, anoma…

    Python