Kamil Rafałko is a Senior Software Engineer with a decade of experience building cloud-native and data-heavy systems, currently working at Dropbox. He’s delivered end-to-end solutions across AWS, Kubernetes, Scala, and modern microservices while migrating legacy telco platforms and building data engineering pipelines. Kamil contributes to notable open-source work in Trino, enhancing Cassandra and Elasticsearch/OpenSearch connectors and improving test integrations, which demonstrates deep expertise in distributed query engines and connector architecture. His background spans machine learning engineering, full-stack Java and Kotlin development, and practical productionization of data workflows. Based in northeastern Poland, he combines hands-on backend craftsmanship with a proven ability to modernize systems at scale. An unusual detail: he studied civil engineering, bringing a structural, systems-thinking approach to software design.
10 years of coding experience
7 years of employment as a software developer
Civil Engineering, Civil Engineering at Uniwersytet Warmińsko-Mazurski w Olsztynie
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Role in this project:
Backend Developer
Contributions:1 review, 5 commits, 5 PRs in 18 days
Contributions summary:Kamil primarily contributed to the Trino project by implementing and modifying connectors, specifically focusing on the Cassandra and Elasticsearch plugins. Their work involved integrating new features, like adding DataStax Enterprise as a test environment for the Cassandra connector and integrating with OpenSearch. The user also made changes to deprecated features in Elasticsearch, demonstrating their understanding of the project's architecture and the evolution of its components. The changes span core plugin functionality and test environments.
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Contributions:71 pushes, 4 branches in 7 months
hbasebigdatabig-datatrinodatabase
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Kamil Rafałko - Senior Software Engineer at Dropbox