Andy OngWorkHot TakesAbout
The Engineer

Selected work

Senior AI Engineer at Heineken's GenAI Lab. I build the platforms and evaluation harnesses that keep agentic systems honest, cheap, and reliable at scale.

2025 to PresentHeineken

Senior AI Engineer

  • Architected an LLM-as-Judge evaluation framework for a production agentic system serving Heineken's global commerce function, defining custom retrieval and generation quality metrics.
  • Built an agentic document-processing system using dual layout- and vision-based extraction with field-level source attribution.
  • Developed an agentic software-development harness that lets coding agents work against real specifications through Confluence, Jira, and Azure DevOps.
  • Set coding conventions, tooling, and review practices across a 5-engineer GenAI team.
Oct 2024 to 2025AI Singapore

MLOps / Platform Engineer

  • Redesigned and standardized CI/CD pipelines across multiple engineering teams, improving deployment reliability and delivery consistency.
  • Designed and maintained shared AI platform services, including MLflow and Langfuse.
  • Architected and deployed an enterprise RAG platform on Azure.
Oct 2022 to Oct 2024AI Singapore

AI Engineer

  • Led a multidisciplinary team of four to build a real-time temporal deep-learning model for hypotension prediction during C-section procedures.
  • Built an end-to-end MLOps platform for credit-risk assessment with automated retraining and drift monitoring.
3+
Years shipping production AI
5
Engineers led on conventions
3
Systems shipped end to end
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