Thomas Rebele
Senior Software Engineer at Cloudera
Buchdorf, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolThomas Rebele is a Senior Software Engineer based in Bavaria with 12 years of experience building and optimizing backend systems, now at Cloudera. He has a strong research background (PhD from Télécom Paris) and practical expertise in query optimization, having contributed to the high-profile Apache Calcite project by improving handling of correlated subqueries and adding a RelOptPlanner visualizer. Thomas has driven new product initiatives, integrated legacy algorithms, and troubleshot production Kubernetes memory issues while on-call, working across Java, Jooq, GRPC, BigQuery, DuckDB and Google Cloud. His career spans R&D and enterprise products at TIBCO EBX and startups, combining academic rigor with hands-on engineering to close the loop from algorithm to production. A detail often missed: he pairs deep optimizer-level changes with developer tooling improvements, reflecting a focus on both performance and debuggability.
12 years of coding experience
6 years of employment as a software developer
Doctor of Philosophy - PhD, Doctor of Philosophy - PhD at Télécom ParisMaster of Science (M.Sc.) Informatik, Master of Science (M.Sc.) Informatik at Technical University of Munich
German, English, French, Japanese
Stackoverflow
384reputation
133kreached
3answers
3questions
Github Skills (14)
apache-calcite10
javas10
sql10
relational-algebra10
java10
optimization10
big-data9
eclipse-plugin6
jmap6
mousewheel6
eclipse6
linux6
jmx6
garbage-collection6
Programming languages (16)
Github contributions (5)
apache/calcite
Dec 2020 - Jan 2023
Apache Calcite
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 reviews, 4 commits, 11 PRs in 2 years 1 month
Contributions summary:Thomas primarily contributed to the Apache Calcite project by addressing specific issues related to SQL query optimization and data processing. Their work involved modifications to the `RelDecorrelator` class, impacting the handling of correlated subqueries and optimizations involving `Sort` operations with limits. Additional commits addressed issues related to dynamic parameters in aggregate queries. Furthermore, the user implemented a RelOptPlanner visualizer for debugging and improved performance in the `RexFieldAccess` constructor.
geospatialapache-calcitesqlapachebig-data
thomasrebele/compact-gtk-theme
Nov 2016 - Mar 2021
Contributions:6 pushes, 1 branch in 4 years 4 months
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