Sebastián Zaffarano
Senior Data Engineer
Stockholm, Sweden
Summary
🤩
Rockstar🎓
Top SchoolSebastián Zaffarano is a Senior Data Engineer based in Stockholm with 15+ years building and architecting backend systems and data pipelines. Currently at Elastic, he focuses on scalable telemetry and security-related data features—contributing to the high-profile Kibana project by enhancing detection rules telemetry and optimizing queries for performance. His open-source work also spans core middleware like Mule, where he improved reliability through bug fixes, refactoring and test coverage. Trained in engineering and advanced studies at the University of Buenos Aires and other Argentine institutions, he combines deep academic grounding with pragmatic, production-first development. Colleagues describe him as a detail-oriented engineer who surfaces diagnostic insights that make large distributed systems safer and more observable.
15 years of coding experience
Postgraduate, Postgraduate at Instituto Tecnológico de Buenos AiresEngineer's degree, Engineer's degree at Universidad Nacional de La MatanzaLicentiate degree, Licentiate degree at University of Buenos Aires
English, German, Spanish
Github Skills (22)
mule10
back-end-development10
testing10
amazon-elasticsearch10
typescript10
java10
security10
javas10
elasticsearchquery10
aws-elasticsearch10
typescript-types10
elasticsearch10
nodejs10
typescripts10
telemetry10
Programming languages (19)
Github contributions (5)
mulesoft/mule
Jan 2020 - Feb 2021
Mule Community Edition
Role in this project:
Back-end Developer
Back-end DeveloperContributions:147 reviews, 109 commits, 282 PRs in 1 year 1 month
Contributions summary:Sebastián primarily contributed to the Mule Community Edition, focusing on fixing bugs and implementing features. Their work involved changes in core Java files, specifically addressing issues in the `ForEach` processor and resolving problems with duplicate correlation IDs. They also added new tests and performed refactoring, improving code reliability. The contributions suggest a focus on core system functionality and testing within the Mule framework.
mulecommunity-edition
elastic/kibana
Apr 2023 - Mar 2025
Your window into the Elastic Stack
Role in this project:Back-end Developer
Back-end DeveloperContributions:62 reviews, 64 PRs, 133 pushes in 1 year 11 months
Contributions summary:Sebastián primarily contributed to enhancing the security solution within the Kibana repository, specifically by adding support for new enrichment fields in detection rules telemetry. They focused on adding, modifying, and filtering specific fields for security alerts, and implemented telemetry tasks for diagnostic timelines. The user also worked on optimizing queries and adding features to enhance the performance and functionality of the telemetry.
elasticdashboardskibanaobservabilitywindow
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