Sergio Del Amo Caballero
Principal Member Of Technical Staff at Oracle
Guadalajara, Castile-La Mancha, Spain
Summary
🤩
Rockstar🎓
Top SchoolSergio Del Amo Caballero is a Principal Member of Technical Staff with 13 years of experience specializing in the Java ecosystem, particularly as a core committer and release lead for the Grails and Micronaut frameworks. He combines deep backend engineering—JVM languages, Gradle, testing and framework internals—with developer advocacy, technical writing, and public speaking, having authored many framework guides and delivered conference talks worldwide. Sergio has led Micronaut releases, coordinated cross-organizational engineering between Micronaut Foundation, Oracle Labs and OCI, and managed remote teams while still contributing substantive code and bug fixes to flagship projects like micronaut-core and grails-core. An entrepreneur at heart, he previously founded startups and consultancies building web and mobile products, giving him strong client-facing and product delivery instincts. Notably, his open-source work includes multitenancy, security plugin testing, and nuanced framework improvements (URL mapping, form handling, tenant resolution) that reveal a focus on robustness and real-world integration.
13 years of coding experience
19 years of employment as a software developer
Telecommunication Technical Engineering, Telecommunication Technical Engineering at Universidad de AlcaláMaster of Science Telematics, Master of Science Telematics at Technische Universität Graz
Spanish, English, German, Italian
Stackoverflow
77,495reputation
9.2mreached
41answers
142questions
Github Skills (40)
json10
web-application10
grails10
back-end-development10
go-gorm10
groovy10
data-set10
testing10
http10
spring-security10
micronaut10
multitenancy10
functional-testing10
java10
data-model10
Programming languages (19)
Github contributions (5)
apache/grails-spring-security
Apr 2017 - Apr 2021
Grails Spring Security Core Plugin
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1 review, 371 commits, 58 PRs in 4 years 1 month
Contributions summary:Sergio primarily focused on improving the functional tests for the Grails Spring Security plugin. The commits show upgrades to testing dependencies like Geb, configuration changes for different testing environments (Chrome, Firefox, etc.), and the creation of scripts to run all tests. The user also addressed issues related to parameter handling in PUT and PATCH requests and updated the project to Grails 3.3.
spring-bootsecurityplugin-corespringgrails
micronaut-projects/micronaut-core
Jun 2017 - Jan 2023
Micronaut Application Framework
Role in this project:Back-end Developer
Back-end DeveloperContributions:152 releases, 1344 reviews, 967 commits in 5 years 8 months
Contributions summary:Sergio's contributions focused on bug fixes and enhancements within the Micronaut framework core. They addressed issues related to the handling of form-url-encoded data, including implementing JSON Patch support and ensuring proper behavior with different cookie settings. The user also made improvements to internal APIs, specifically related to type arguments and exception handling.
groovyserverlessmicronautframeworkkotlin
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