About the author
Justin Castilla is a Python and Javascript programmer, educator, and overall hypeman for fun code. He currently works at Elastic as a Senior Developer Advocate. In his spare time, he loves to tinker with IoT, collect vintage synthesizers, and build elaborate mansions for his two cats.
Author’s articles
July 8, 2025
Elasticsearch string contains substring: Advanced query techniques
Explore techniques for querying Elasticsearch to find documents where a field contains a specific substring.
September 25, 2024
Navigating an Elastic vector database
An overview of operating a modern Elastic vector database with practical code samples.