Genuine open-source disposition: comfort engaging with community issues, external contributors, and public design discussions. * Prior contributions to open-source data infrastructure (Kafka, Spark, Flink, dbt, Debezium, Iceberg, or similar). * Ship visible, measurable wins in throughput, stability, and developer experience. You don't need to be a maintainer of a well-known project, but you do need to be comfortable working in the open.
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