Marios Trivyzas
Senior Software Engineer - CrateDB
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarios Trivyzas is a Senior Software Engineer with 11 years of experience specializing in open-source databases, SQL implementations, and distributed datastores, currently contributing to CrateDB at Crate.io from Berlin. He has a strong track record across high-profile projects like Elasticsearch and Apache Flink, where his backend work fixed subtle sorting and data-type bugs and improved JDBC connector and testing infrastructure. At CrateDB he focuses on memory accounting, primary key handling, PostgreSQL-compatible SQL parsing, and role management to boost performance and correctness at scale. His contributions show a pattern of tackling tricky edge cases in query execution and data serialization that often sit behind user-facing features. Comfortable in both product companies and core infra projects, he blends pragmatic engineering with deep protocol and type-system understanding. Colleagues would note his knack for turning nuanced bug reports into robust, long-lived fixes across large codebases.
11 years of coding experience
14 years of employment as a software developer
Ethnikon kai Kapodistriakon Panepistimion Athinon
English, French, Greek
Stackoverflow
21reputation
308reached
2answers
0questions
Github Skills (31)
unit-testing10
apache-flink10
datatypes10
amazon-elasticsearch10
testing10
flink-sql10
datatable10
jdbc10
java10
datatables10
javas10
elasticsearchquery10
aws-elasticsearch10
html-table10
sql10
Programming languages (12)
Github contributions (5)
crate/crate
May 2016 - Jan 2023
CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 releases, 2606 reviews, 914 commits in 6 years 9 months
Contributions summary:Marios's commits primarily focus on addressing bugs and improving the functionality of the CrateDB SQL database. The user implemented memory accounting, optimized database operations, and resolved issues related to table management and database performance, like those occurring when filtering on the primary key column. Further work was focused on fixing inconsistencies with PostgreSQL style INTERVAL parsing, and creating the infrastructure for allowing and handling roles related to user management, and fixing a bug for the correct extraction of the primary keys.
dbmscratedbon-toptime-seriesindustrial-iot
apache/flink
Sep 2021 - Apr 2022
Apache Flink
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:427 reviews, 141 commits, 64 PRs in 6 months
Contributions summary:Marios's contributions centered around improving the efficiency and functionality of testing infrastructure within the Apache Flink project. They focused on refactoring existing tests for built-in functions, making them more efficient by enabling the testing of multiple expressions within a single pipeline execution. The user added new tests, particularly for data type casts, covering a wide range of type combinations to ensure the robustness of the project's data processing capabilities. Additionally, the user fixed bugs and implemented new features related to time handling and data serialization.
pythonflinkconnectorsqlapache
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