I’m Karthigai Selvan, a data engineer with 13+ years of experience building scalable data platforms, cloud-native systems, and cybersecurity-focused data products.

What I write about

K2DDNA is where I document practical lessons from building and learning: data engineering, platform design, Databricks, Spark, Airflow, dbt, governance, and experiments that are useful to revisit. I also keep a personal record of the books I read and the ideas that stay with me.

My background

My work has covered data platforms, data quality, governance, cloud engineering, and secure data access. I’ve worked with technologies including Apache Spark, Airflow, Delta Lake, dbt, AWS, Kubernetes, Terraform, Trino, Apache Ranger, DataHub, and Great Expectations.

The aim of this site is simple: share clear, useful notes from real work and ongoing learning—not generic summaries.

Connect

LinkedIn  ·  GitHub  ·  Contact me