I'm the author of Data Engineering Design Patterns (O'Reilly),
a Databricks MVP, and
a freelance data engineer specializing in Apache Spark and Databricks.
I help teams move from working pipelines to resilient architectures.
I'm currently accepting new projects for May 2026. Whether you need a 2-day architectural audit, a hands-on lead for a
complex data engineering problem, or a workshop
let's discuss your project here.
Seven (!) years have passed since my blog post about Join types in Apache Spark SQL (2017). Coming from a software engineering background, I was so amazed that the world of joins doesn't stop on LEFT/RIGHT/FULL joins that I couldn't not blog about it ;) Time has passed but lucky me, each new project teaches me something.
