Roberto Cortez
Principal Software Engineer at JMaster
Coimbra, Coimbra, Portugal
Summary
🤩
Rockstar🎓
Top SchoolRoberto Cortez is a Principal Software Engineer with 12+ years of hands-on experience building and maintaining Java platforms, currently leading SmallRye and key configuration, tracing, and batch areas in Quarkus at Red Hat. A recognized Java Champion and frequent conference speaker (JavaOne, Devoxx, JFokus), he combines deep open-source contributions across Quarkus, SmallRye, TomEE and Apache projects with productizing those efforts for enterprise runtimes and cloud-native deployments. He founded JNation and leads the Coimbra JUG, demonstrating community-first leadership that scales from local meetups to a 1,000+ attendee conference. Roberto’s background includes bootstrapping engineering teams and offices (Talkdesk), migrating legacy systems at scale, and pioneering Quarkus in production—skills reflected in test-focused contributions to well-known repos like Quarkus and Apache TomEE. He pairs pragmatic architecture and operational know-how (GraalVM, Kubernetes, OpenTelemetry) with a freelancer’s adaptability and a bias for improving developer experience.
12 years of coding experience
16 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at Universidade de Coimbra
English, Portuguese, Spanish
Github Skills (19)
jakartaee10
testing10
configuration-management10
microprofile10
java10
rabbitmq10
javas10
junit10
arq10
opentelemetry10
cdi10
back-end-development9
jwt8
kafka8
jsonb8
Programming languages (11)
Github contributions (5)
javaee-samples/javaee7-samples
Nov 2013 - Aug 2015
Java EE 7 Samples
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:86 commits, 2 pushes, 27 comments in 1 year 9 months
Contributions summary:Roberto primarily contributed to the project by adding and refactoring batch tests, focusing on the Java EE 7 Batch API. They implemented test cases for different batch processing scenarios, including chunk-oriented processing with listeners and custom checkpoint algorithms. Furthermore, the user refactored common testing methods into a utility class, improving code reusability. The work involved modifying existing test structures and writing new tests to enhance the project's test coverage for the Java EE 7 samples related to batch processing.
tomcatglassfishjunitjsfpayara
apache/tomee
Nov 2017 - Feb 2019
Apache TomEE
Role in this project:Back-end Developer
Back-end DeveloperContributions:316 commits, 23 PRs, 55 comments in 1 year 3 months
Contributions summary:Roberto's commits primarily focused on enhancing the Apache TomEE project, a Java EE application server, with support for MicroProfile. They implemented and integrated a MicroProfile Config implementation, enriching the classloader to include necessary beans. The user also added MicroProfile Config and JWT TCK tests and refactored existing code, demonstrating a focus on implementing and testing MicroProfile specifications within the TomEE environment. The contributions also involved improving compatibility with other related technologies such as Johnzon.
microprofileapachetomeenetwork-serverjakarta-ee
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