Matt Halverson
Principal Consultant at Woolferson Limited
Christchurch, Canterbury, New Zealand
Summary
🤩
Rockstar🎓
Top SchoolMatt Halverson is a Principal Consultant and seasoned software generalist with 13 years of experience building data infrastructure, ETLs, and database operations across startups and large enterprises. He founded Woolferson Limited after leading NZ data acquisition and next-gen on-prem cloud data warehouse efforts at IAG and helping stand up Uber’s data warehouse team. A functional programming enthusiast and avid debugger, Matt co-authored the widely used uber/queryparser for parsing and lineage analysis of Presto, Hive, and Vertica SQL. Based in Christchurch, he bridges legacy systems (including mainframes) and modern open-source stacks, turning tricky data problems into maintainable solutions.
13 years of coding experience
9 years of employment as a software developer
Los Banos High SchoolBS, Biomedical Engineering, BS, Biomedical Engineering at UC Davis
English, Spanish
Github Skills (7)
hive10
sql-parser10
parsing10
presto10
vertica10
json-serialization8
cabal6
Programming languages (5)
Github contributions (5)
uber/queryparser
Apr 2017 - Feb 2018
Parsing and analysis of Vertica, Hive, and Presto SQL.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 10 PRs, 7 pushes in 10 months
Contributions summary:Matt primarily contributed to the parsing and analysis of SQL queries within the `uber/queryparser` repository. Their work involved implementing features such as parsing and resolving Presto, Hive, and Vertica SQL statements, and they added functionality to support analyses like table and column lineage. They also refactored code to remove Uber-specific behaviors to make the library more general-purpose, and added JSON serialization of resolved statements. The user demonstrated expertise in extending the capabilities of the query parser.
parsingprestosqlvertica
mhalverson/huts
Apr 2019 - Oct 2022
Track and visualize the New Zealand backcountry huts I have visited
Contributions:34 commits, 36 pushes, 1 branch in 3 years 6 months
zealandvisualizedata-visualizationbackcountrynew-zealand
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