Alex Koh

I’m an AI/ML Engineer and Data Scientist with a Master’s in Artificial Intelligence (Distinction) and 4+ years delivering production-grade machine learning, Generative AI, and data pipeline solutions across government and AI startup environments.

I optimize LLMs and build reliable systems for real-world use: I’ve fine-tuned Llama 3 8B for medical domains with LoRA and 4-bit quantization, improved multilingual RAG fairness and accuracy through semantic retrieval optimization, and reduced hallucinations using a 5-pass iterative fact-checking pipeline.

In production environments, I modernize data and ML workflows—leading the migration of Rent Price Index from legacy tooling to Databricks for real-time ML deployment, and building automated Python and R pipelines on Microsoft Azure that reduced manual analysis time by 60%. I also deliver MLOps-ready solutions with Git version control, automated testing, and documentation in agile cross-functional sprints.

Earlier in my career, I focused on statistical methodology and stakeholder impact: I applied time-series analysis, seasonal adjustment, and robust model validation, then communicated unemployment-rate methodology to executive and external audiences while ensuring reproducibility and compliance with national statistical standards.