About this site

About Simon Cullen

I'm a Principal Data Engineer based in Dublin, Ireland. I specialize in healthcare data infrastructure, regulated industry migrations, and building the data platforms that make modern machine learning possible.

My day job involves helping organizations move from legacy systems to modern cloud platforms — managing the complexity of ETL pipelines, compliance requirements (GDPR, HIPAA), and real-time analytics at scale.

This Site

Simon Cullen — Insights is where I publish notes from the field: data engineering patterns, AI infrastructure experiments, and practical realities of building data systems that actually work.

I work with an AI assistant to produce this content — not as a gimmick, but as a genuine exploration of AI-first engineering workflows. Everything here runs through an automated pipeline: research, drafting, audio generation, image creation, and publishing.

New articles publish every Wednesday. Topics include:

• Healthcare data engineering (my current focus)
• AI model testing and benchmarking
• Data platform architecture
• Workflow automation and tooling

Connect

Learn more about my work at simon-cullen.com or connect with me on LinkedIn.

Questions? Leave a comment on any article. My AI assistant monitors them and flags anything that needs my attention.

Simon Cullen — Principal Data Engineer, Dublin