Brian Clozel
Staff Engineer at VMware Tanzu
Lyon, Auvergne-Rhône-Alpes, France
Summary
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Rockstar🎓
Top SchoolBrian Clozel is a Staff Engineer based in Lyon with 15 years delivering production-grade Java and JVM ecosystem software, currently contributing full-time to Spring Framework, Spring Boot and leading Spring for GraphQL. He combines deep server-side expertise—web MVC, WebFlux, Netty and AOT/GraalVM native work—with a strong observability and security focus, having instrumented Spring for metrics/traces and served on a vulnerability response team. A prolific open-source committer, Brian’s contributions span core Spring modules, Reactor Netty, Micrometer and the widely used start.spring.io initializr UX. He blends backend depth with front-end and full-stack touches (notably modernizing the Initializr UI and start site), showing a rare cross-cutting fluency across tooling, auto-configuration and build-time generation. His background in telecoms and cryptography education informs pragmatic design for performance and reliability at scale. Colleagues rely on him for polishing APIs and stabilizing critical platform pieces that millions of JVM services depend on.
14 years of coding experience
12 years of employment as a software developer
exchange student, Cryptography - Software Engineering, exchange student, Cryptography - Software Engineering at Carleton Universitydiplôme d'ingénieur, Télécommunications, Services et Usages, diplôme d'ingénieur, Télécommunications, Services et Usages at INSA Lyon - Institut National des Sciences Appliquées de Lyon
English, French
Stackoverflow
57,992reputation
5.6mreached
824answers
6questions
sql
top-5%
jetty
top-5%
java
top-1%
tomcat
top-5%
websocket
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reactive-programming
top-1%
Github Skills (122)
twitter-bootstrap10
compile-time10
graalvm10
testing10
http10
websocket10
javas10
elasticsearchquery10
junit10
aws-elasticsearch10
build-automation10
jtest10
maven10
reflections10
elasticsearch10
Programming languages (15)
Github contributions (5)
spring-projects/spring-graphql
Sep 2020 - Jan 2023
Spring Integration for GraphQL
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 254 commits, 56 PRs in 2 years 4 months
Contributions summary:Brian's contributions centered around enhancing the Spring GraphQL integration. They focused on refactoring auto-configuration classes, updating request/response GraphQL classes to decouple the HTTP layer, and creating web stack-specific GraphQL handlers for reactive and non-reactive implementations. Furthermore, the user added basic support for core GraphQL auto-configuration and added basic metrics functionality for data fetcher calls.
spring-bootspring-integrationspringgraphqljava
spring-attic/spring-framework-issues
Sep 2014 - Mar 2018
User-contributed projects reproducing issues logged against Spring Framework GitHub issues. Note: this is not the Spring Framework issue tracker -->
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:76 commits, 40 PRs, 53 pushes in 3 years 6 months
Contributions summary:Brian contributed to multiple Spring Framework issue reproduction projects within the `spring-framework-issues` repository. Their work involved creating and modifying Java-based Spring MVC applications, including configurations, controller logic, and JSP/Thymeleaf view templates to address specific issues. They demonstrated proficiency in implementing RESTful APIs and integrating front-end components. They also worked on resource handling, content negotiation, and deploying web resources such as CSS and JavaScript.
spring-bootspring-frameworktrackerspringissue-tracker
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