Alexander Preuß
Co-Founder & CTO at streamvisor
Spain
Summary
🤩
Rockstar🎓
Top SchoolAlexander Preuß is a Co-Founder and CTO with 11 years of experience building cloud-native, streaming systems and a focused mission to make Apache Pulsar easy and accessible. He has led engineering at startups and at Ververica/StreamNative, contributing to high-profile open-source projects like Apache Flink—where he implemented Elasticsearch table sinks and improved test reliability—demonstrating deep expertise in stream processing integrations. Comfortable across Kubernetes, Kafka, PostgreSQL and multi-cloud environments, he combines hands-on backend development with product-facing system design. Based in Spain and grounded in an MS from Hasso Plattner Institute, he brings both entrepreneurial grit and a track record of measurable impact, including a 41% improvement in wireless localization early in his career.
11 years of coding experience
5 years of employment as a software developer
Master of Science - MS IT-Systems Engineering, Master of Science - MS IT-Systems Engineering at Hasso Plattner InstituteBachelor of Science - BS Informatik, Bachelor of Science - BS Informatik at Hochschule Zittau/Görlitz (FH)
Github Skills (14)
tableau-api10
javas10
elasticsearch10
elasticsearchquery10
flink-sql10
api10
aws-elasticsearch10
apache-flink10
java10
elasticsearch-api10
amazon-elasticsearch10
scala5
sql5
big-data5
Programming languages (13)
Github contributions (5)
apache/flink
Sep 2021 - Sep 2022
Apache Flink
Role in this project:
Back-end Developer
Back-end DeveloperContributions:128 reviews, 59 commits, 48 PRs in 1 year
Contributions summary:Alexander contributed to the Apache Flink project by fixing documentation issues, specifically related to methods within the `DynamicTableFactory`. They integrated a unified Elasticsearch 7 sink with the Table API, adding functionality to connect to Elasticsearch. The user also improved test stability by blocking until all records were acknowledged by Elasticsearch and made the ElasticsearchSinkBuilderBase type-capturing. These commits demonstrate expertise in integrating Elasticsearch with Flink's table and streaming APIs.
apache-flinkscalajavabig-dataflink
alpreu/pulsar
Jul 2022 - Jan 2024
Apache Pulsar - distributed pub-sub messaging system
Contributions:10 PRs, 39 pushes, 17 branches in 1 year 6 months
pulsarmessaging-systemstreamingapachepub-sub
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