Drew Paroski
Staff Software Engineer at MongoDB
United States
Summary
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SeniorDrew Paroski is a staff software engineer with 15 years of experience building high-performance runtimes, compilers, and database systems and leading engineering organizations. He has deep systems expertise from early work on .NET CLR and HHVM/Hack to core storage and comparator fixes in MongoDB and native codegen and UDF/stored-proc features at SingleStore. As a former VP of Engineering he blends hands-on low-level design with executive experience in hiring, org design, and product execution—driving cloud launches, performance overhauls, and adoption at Fortune 500 customers. His open-source contributions span language parsing and analysis tools (pfff) and foundational database internals (mongodb/mongo), showing a rare mix of language/runtime and storage-layer fluency. Colleagues rely on him to mentor engineers and managers while still shipping critical code in compilers, runtimes, and databases.
15 years of coding experience
13 years of employment as a software developer
Stackoverflow
170reputation
13kreached
4answers
0questions
Github Skills (23)
parser10
c-language10
lexer10
databases10
php10
parsing10
parse10
bson10
cprogramming-language10
lex10
database10
code-optimization9
code-analysis9
data-structures8
data-structure8
Programming languages (4)
Github contributions (5)
mongodb/mongo
Apr 2020 - Jan 2023
The MongoDB Database
Role in this project:
Back-end Developer
Back-end DeveloperContributions:141 commits in 2 years 9 months
Contributions summary:Drew made significant contributions to the core of MongoDB's storage engine. These commits involved deleting deprecated code, updating code used for comparisons, and fixing bugs. The focus was on refining and improving the core database functionality, specifically concerning BSON comparators, and core functionality.
nosqlc-plus-plusmongodb-databasedatabasemongodb
facebookarchive/pfff
Sep 2012 - Dec 2014
Tools for code analysis, visualizations, or style-preserving source transformation.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits in 2 years 3 months
Contributions summary:Drew contributed significantly to the `pfff` project, which involves tools for code analysis. Their work included adding support for new HipHop builtin classes related to collections and adding support for collection literals. The user also implemented support for `try/finally` blocks and nullsafe method calls ("?->") within the PHP parser. These contributions demonstrate a focus on enhancing the language parsing capabilities of the tool.
transformationrefactoringvisualizationscode-analysisstatic-analysis
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