Benny Chow
Principal Software Development Engineer at Dremio
Bellevue, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolBenny Chow is a Principal Software Development Engineer with 14 years of experience building high-performance analytics and query systems, currently leading SQL acceleration and materialized view work at Dremio. He specializes in lakehouse architectures, Apache Iceberg integration, and cost-based query rewrite systems, and is a recognized subject-matter expert on Dremio Reflections and distributed fault-tolerant query execution. Previously he architected Pentaho’s OLAP stack and contributed key optimizations to the open-source Mondrian OLAP engine, improving data-type handling, performance of subtotals/totals, and regex support across dialects. Benny combines deep backend engineering with product-focused observability—using customer telemetry to drive design—and brings rare experience running cloud data warehousing efforts dating back to the pre-cloud era. He holds an EECS degree from UC Berkeley and an MBA, and often bridges engineering, architecture, and customer-facing support across open-source and enterprise projects.
14 years of coding experience
22 years of employment as a software developer
BS Electrical Engineering Computer Science (EECS), BS Electrical Engineering Computer Science (EECS) at University of California, BerkeleyMasters of Business Administration (MBA), Masters of Business Administration (MBA) at HKUST Business School
English, Chinese
Github Skills (14)
olap10
mdx10
javas10
mondrian10
back-end-development10
java10
database9
data-analysis9
databases9
sql8
e-mail6
file-handling6
emailjs6
integrations6
Programming languages (2)
Github contributions (5)
pentaho/mondrian
Nov 2013 - Feb 2022
Mondrian is an Online Analytical Processing (OLAP) server that enables business users to analyze large quantities of data in real-time.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 reviews, 60 commits, 48 PRs in 8 years 4 months
Contributions summary:Benny primarily contributed to the `mondrian/mondrian` repository, an OLAP server, by implementing features and fixing bugs related to data types and calculations within the OLAP engine. Their commits involved exposing level data types through olap4j, a crucial component for data analysis. The user also addressed performance issues with subtotals and totals, adding a function for the Analyzer to improve performance. Additionally, the user fixed issues with the `CachedExists` function and enhanced support for regular expressions within different database dialects.
olapmondrianjavamdxdatabase
pentaho/pentaho-platform
Jan 2013 - Mar 2022
Pentaho BA Server Core
Role in this project:Back-end Developer
Back-end DeveloperContributions:16 reviews, 70 commits, 58 PRs in 9 years 3 months
Contributions summary:Benny primarily contributed to back-end services related to the Pentaho platform. Their commits focused on implementing and enhancing MDX (Multidimensional Expressions) connections within the system. Key changes include adding a new MDX Olap4j connection and addressing issues with file names and email attachments, demonstrating a focus on data access and report generation functionality. The commits show modifications to core connection services, suggesting back-end expertise.
pentahoserver-core
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