Padraig O'sullivan
Enterprise Architect at Starburst
Maine, United States
Summary
🤩
Rockstar🎓
Top SchoolPadraig O'sullivan is an Enterprise Architect with 17 years of experience building and optimizing data platforms, currently helping customers get the most from Trino at Starburst. Based in Maine, he combines deep systems and database expertise (Trino/Presto, Trino core contributions, MySQL, PostgreSQL) with hands-on engineering in Python, dbt, Kubernetes and GitOps to deliver scalable analytics at production scale. His background includes low-level storage and query work from Akiban and long-term contributions to the Trino codebase—skills that help him bridge connector internals, query performance, and operator experience. He has a track record of improving connectors, adding engine features and instrumentation, and even contributing licensing/test automation to open-source SQL parser projects, reflecting both engineering depth and attention to long-term maintainability.
17 years of coding experience
14 years of employment as a software developer
B.Sc. Computer Science, B.Sc. Computer Science at University College CorkM.S. Computer Science & Engineering, M.S. Computer Science & Engineering at University of Maryland
Stackoverflow
444reputation
15kreached
3answers
0questions
Github Skills (34)
parser10
postgresql10
mysql10
testing10
doctrine10
databases10
jdbc10
java10
javas10
php10
parsing10
sql10
parse10
data-integration10
sql-database10
Programming languages (8)
Github contributions (5)
brunoribeiro/sql-parser
May 2011 - Nov 2012
The Akiban SQL Parser provides a complete, production-quality Java parser for the SQL language. It defines the SQL grammar as implemented by Akiban, but can be used independently. It is derived from the Apache Derby parser.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 commits in 1 year 6 months
Contributions summary:Padraig primarily contributed to the Akiban SQL Parser by adding and modifying Java files, specifically focusing on aspects related to the parser's functionality and licensing. The commits include updates to the code's license headers, introducing a Maven goal for automatic header checks and formatting, and integrating features related to SQL sequences. The user also made changes to the test files and documentation, further solidifying their role in the project's development and maintenance.
sql-parserderbysqlderivedgrammar
trinodb/trino
Jun 2022 - Jun 2022
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Role in this project:Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:61 reviews, 1 commit, 33 PRs in 1 day
Contributions summary:Padraig's contributions primarily involve enhancing the Trino query engine's capabilities, specifically in integrating and improving connectors for various data sources. They refactored test code and improved data mapping for the Cassandra connector. Additionally, they added support for features like reverse functions for varbinary data types, and incorporated new JDBC driver parameters. They also implemented enhancements to the MongoDB connector and added metrics for system memory usage, along with the web UI.
prestodbdbmsindexingjdbcbigdata
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