Andreas Braun
Lead Software Engineer at MongoDB
Munich, Bavaria, Germany
Summary
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RockstarAndreas Braun is a Munich-based Lead Software Engineer with 13 years of experience specializing in backend systems, databases and developer tooling, currently a lead at MongoDB and an active open-source maintainer. He combines deep hands-on expertise in MongoDB drivers and PHP/Doctrine ecosystems with practical contributions across C, Go and PHP projects—ranging from the official mongo-c and mongo-go drivers to widely used Doctrine libraries and Symfony integrations. Known for improving maintainability and testability, his work often focuses on refactors, CI/compatibility, and subtle bug fixes (e.g., transaction and BSON handling) that materially reduce production risk. Andreas also contributes to developer ergonomics—updating PhpStorm stubs, Psalm call maps and documentation—helping others write safer code. Despite a backend focus, he demonstrates cross-language fluency and an eye for long-term API stability that benefits large ecosystems.
13 years of coding experience
Stackoverflow
184reputation
16kreached
11answers
0questions
Github Skills (95)
apim10
transaction10
restructuredtext10
go-language10
php-java-bridge10
annotations10
testing10
command-line-interface10
databases10
scriptingbridge10
c1110
phpunit10
security10
c1710
transactionscope10
Programming languages (18)
Github contributions (5)
alcaeus/mongo-php-adapter
Dec 2015 - Aug 2022
Role in this project:
Back-end Developer
Back-end DeveloperContributions:37 releases, 2 reviews, 436 commits in 6 years 9 months
Contributions summary:Andreas contributed to an adapter for providing an ext-mongo interface on top of the mongo-php-library. The contributions involved fixing syntax issues in PHP 5.5, adding test cases, correcting class names for BSON IDs, and implementing basic cursor functionality. They also implemented methods for commands, aggregation, and ensuring the proper handling of read and write preferences.
mongophpadapterlinkon-top
doctrine/mongodb-odm
Apr 2015 - Aug 2021
The Official PHP MongoDB ORM/ODM
Role in this project:Back-end Developer
Back-end DeveloperContributions:29 releases, 382 reviews, 849 commits in 6 years 5 months
Contributions summary:Andreas primarily worked on implementing and maintaining features related to document management and the aggregation framework within the MongoDB ODM. Their contributions included fixing bugs, such as ensuring proper type handling for the `$elemMatch` operator and the correct use of discriminators with references. They also implemented enhancements, such as adding tests and logic to support more of the aggregation stages.
document-mapperdatabasemapperodmdoctrine
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