Wilerson Oliveira
Software Engineer at Wolt
Berlin, Germany
Summary
👤
SeniorWilerson Oliveira is a Berlin-based software engineer with 13 years of industry experience and a decade-plus passion for exploring new technologies. Currently at Wolt, he focuses on building reliable backend systems and improving developer-facing infrastructure. He is an active open-source contributor to the popular Javalin Java/Kotlin web framework, where he has enhanced CORS handling, Micrometer metrics tagging, and asynchronous request error handling. That blend of production experience and targeted open-source fixes shows he pays attention to edge cases and observability as much as feature delivery. Colleagues would describe him as pragmatic, curious, and comfortable navigating both legacy behaviors and modern metrics-driven practices.
13 years of coding experience
English, Portuguese
Stackoverflow
376reputation
22kreached
1answer
5questions
Github Skills (21)
kotlin10
asynchronous10
cors10
async10
java10
javas10
web-framework10
rest-api10
testing9
microservices-application9
micrometer9
microservices9
jetty8
google-visualization6
date-format6
Programming languages (9)
Github contributions (5)
javalin/javalin
Aug 2020 - Sep 2021
A simple and modern Java and Kotlin web framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 7 commits, 6 PRs in 1 year
Contributions summary:Wilerson contributed to the Javalin web framework by implementing and enhancing features related to the CorsPlugin, Micrometer metrics, and asynchronous request handling. They addressed issues related to CORS plugin interaction with OPTIONS endpoints, added optional tagging for 3xx and 404 responses in Micrometer, and improved the handling of exceptions during asynchronous request result writing. The contributions also include fixing the test case for Instants as Timestamps.
frameworkjavalinkotlinjettyservlet
wilerson/javalin
Aug 2020 - Sep 2021
A simple and modern Java and Kotlin web framework
Contributions:2 PRs, 9 pushes, 7 branches in 1 year
micro-frameworkframeworkwebclientweb-serviceswebframework
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.