Guilherme Gwadera
Software Engineer at Revolut
Lisbon, Portugal
Summary
👤
Senior🎓
Top SchoolGuilherme Gwadera is a pragmatic software engineer with 9 years of hands-on experience building and modernizing Java-based distributed systems, currently contributing at Revolut from Lisbon. He specializes in microservices, REST and GraphQL APIs, and both SQL and NoSQL datastores, with a proven track record migrating legacy Java 8 systems to Java 17 and drastically cutting endpoint latencies. Guilherme brings strong observability and resilience skills—implementing Grafana/Prometheus/OpenTelemetry, Resilience4J patterns, and retriable dead-letter queues—to improve uptime and recovery. He has driven end-to-end CI/CD improvements with GitHub Actions and production-grade testing using TestContainers and LocalStack. A self-taught engineer who began coding in college, he pairs curiosity with practical impact, from optimizing critical payment/coupon services to contributing bug fixes to the Liquibase open-source project. Outside work he’s an engineering geek who enjoys coding, gaming, and continuous experimentation with new tools and languages.
10 years of coding experience
4 years of employment as a software developer
Bachelor Chemical Engineering, Bachelor Chemical Engineering at Universidade Federal de Santa CatarinaSantander Coders Java 2020 Java Full-Stack Web Development, Santander Coders Java 2020 Java Full-Stack Web Development at Digital House Brasil
Github Skills (44)
javascript10
typescript10
projeto10
bootcamp10
graphql10
nodejs10
react10
database-migrations9
liquibase9
database-management8
cockpit8
oms8
database8
sql8
database-administration8
Programming languages (7)
Github contributions (5)
ggwadera/c0d3-app
Aug 2020 - Feb 2024
Production App
Contributions:115 pushes, 90 branches in 3 years 7 months
reacttypescriptproduction
ggwadera/leetcode-java
May 2023 - Aug 2025
My solutions for the Leetcode challenges, using the Java language.
Contributions:2 PRs, 79 pushes, 3 branches in 2 years 2 months
javaleetcode
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