Louis Jacomet
Senior Lead Software Engineer at Gradle Inc.
Sint-Genesius-Rode - Rhode-Saint-Genèse, Flemish Brabant, Belgium
Summary
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RockstarLouis Jacomet is a Senior Lead Software Engineer with over 13 years of hands-on JVM and Java expertise, currently shaping the Gradle build tool from Belgium. He blends deep backend craftsmanship—demonstrated by contributions to prominent OSS projects like Quartz Scheduler and Ehcache—with team leadership, coaching, and pragmatic people management. Louis has a track record of fixing tricky concurrency, calendar/cron, and off-heap memory issues, showing a focus on correctness and robustness in core infrastructure. At Gradle he has improved developer experience and code quality by refactoring deprecated plugin methods and cleaning up Java/Groovy internals. He also runs a freelance practice, keeping a direct engineering rhythm while mentoring teams. Colleagues rely on him for clear, visibility-driven agile practices that turn complex backend problems into production-ready solutions.
13 years of coding experience
Stackoverflow
14,092reputation
1.2mreached
570answers
1question
spring-boot
top-5%
java
top-1%
spring
top-5%
maven
top-5%
caching
top-1%
gradle
top-1%
Github Skills (27)
unit-testing10
caching10
groovy10
testing10
quartz-scheduler10
software-quality10
java10
javas10
test-automation10
gradle10
pmd9
spring9
concurrent-programming9
spring-boot9
checkstyle9
Programming languages (8)
Github contributions (5)
ehcache/ehcache3
Aug 2014 - Jan 2018
Ehcache 3.x line
Role in this project:
Backend Developer & Test Automation Engineer
Backend Developer & Test Automation EngineerContributions:2 releases, 1308 commits, 960 PRs in 3 years 5 months
Contributions summary:Louis focused on improving the Ehcache 3.x line by addressing memory footprint issues and code quality. They implemented unit tests that focused on closing the underlying Store in test tear-downs and added unit tests. The work involved enhancing tests and addressing a memory related issue in OffHeapStore, the core functionality of the ehcache library. Furthermore, they improved the code to handle invalidations with appropriate timing and prevent race conditions.
ehcache
quartz-scheduler/quartz
Feb 2013 - Jan 2016
Code for Quartz Scheduler
Role in this project:Back-end Developer
Back-end DeveloperContributions:37 commits, 1 comment in 3 years
Contributions summary:Louis primarily focused on improving the Quartz Scheduler core, addressing various bug fixes and implementing enhancements. Their contributions included fixing daylight savings issues within the calendar interval trigger, adapting cron expression parsing, and correcting boundary conditions for fire time calculations. The user also addressed issues related to triggers, including handling simple triggers and addressing concurrent modification issues. They also addressed Javadoc and JMX related issues.
schedulerquartzquartz-schedulerschedule
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