Alexander Jo
Senior Software Engineer at Datadog
Denver, Colorado, United States
Summary
🤩
Rockstar🎓
Top SchoolAlexander Jo is a Senior Software Engineer with 11 years of experience building and testing backend systems for cloud and analytics platforms, currently driving work at Datadog in Denver. He spent five years at Starburst and earlier roles at CloudHealth and Intuit, bringing deep domain knowledge in distributed query engines and cloud infrastructure. An active contributor to the high-profile Trino project, he strengthened its test suite by adding coverage for TABLESAMPLE filters and lifecycle scenarios like table creation and deletion. Alexander combines pragmatic engineering with a focus on test automation and correctness, ensuring complex SQL behaviors are reliable in production. He holds a BS in Computer Science from Northeastern University and often works at the intersection of data engines and observability.
11 years of coding experience
7 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at Northeastern University
Chinese, Sign languages
Github Skills (6)
unit-testing10
javas10
test-framework10
sql10
java10
testing10
Programming languages (5)
Github contributions (5)
trinodb/trino
Jun 2022 - Dec 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 / Test Automation Engineer
Back-end Developer / Test Automation EngineerContributions:1186 reviews, 21 commits, 171 PRs in 6 months
Contributions summary:Alexander primarily focused on enhancing the test suite for the Trino data query engine. They implemented unit test coverage for the TABLESAMPLE query functionality, specifically incorporating filters. Furthermore, the user contributed to the testing framework by creating tests for scenarios involving table creation and deletion operations. Their efforts involved writing test cases, modifying existing test files, and ensuring the accuracy of query results.
big-datasql-querytrinojavapresto
alexjo2144/iceberg
Mar 2022 - Sep 2024
Apache Iceberg
Contributions:14 pushes, 4 branches in 2 years 5 months
connectorapache-icebergapachebig-datadatastream
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