André Cardoso
Senior Staff Software Engineer at unico IDtech
Santa Catarina, Brazil
Summary
🤩
Rockstar🎓
Top SchoolAndré Cardoso is a Senior Staff Software Engineer with 16 years of experience leading architecture, performance and reliability work across cloud-native Ruby on Rails platforms. He has driven cross-cutting decisions at RD Station—improving DB architectures, cloud migrations, CI performance and incident leadership—and now shapes product-critical systems at unico IDtech. Hands-on across backend and full-stack concerns, André contributes to prominent open-source projects in the Ruby ecosystem (rails, pry, vcr) and has helped modernize Rust/WASM examples, showing fluency across languages. He excels at reducing complexity and operational cost while mentoring teams, balancing long-term architecture with pragmatic fixes. A pragmatic problem-solver, he’s known for tackling subtle compatibility and cookie/HTTP edge cases and for shipping tested improvements that keep large codebases healthy. Based in Santa Catarina, Brazil, he pairs deep Rails internals knowledge with infrastructure experience in Kubernetes, GCP/AWS and multiple datastores.
16 years of coding experience
17 years of employment as a software developer
BS Computer Science, BS Computer Science at Universidade do Sul de Santa Catarina
English
Stackoverflow
56reputation
40kreached
2answers
0questions
Github Skills (46)
application-framework10
ruby-rails10
redis10
testing10
app-framework10
rails10
rust-wasm10
ruby10
wasmer10
yaml10
activerecord10
web-framework10
rack10
wasmtime10
rust10
Programming languages (6)
Github contributions (5)
splitrb/split
Jun 2017 - Jan 2023
:chart_with_upwards_trend: The Rack Based A/B testing framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 releases, 21 reviews, 209 commits in 5 years 8 months
Contributions summary:André primarily worked on improving the `splitrb/split` repository, a Rack-based A/B testing framework. Their contributions included refactoring the `CookieAdapter` to directly interact with `Rack::Request` and `Rack::Response`, addressing cookie header duplication issues by integrating with `ActionDispatch::Cookies` where available, and ensuring compatibility with older Rack versions. Furthermore, the user made several updates to improve the framework's functionality, including updating the fakeredis version. They also added a feature to avoid hitting up redis for robots/excluded users.
splitredistesting-frameworkcharta-b-testing
pry/pry
Aug 2020 - Jan 2023
A runtime developer console and IRB alternative with powerful introspection capabilities.
Role in this project:Backend Developer
Backend DeveloperContributions:3 releases, 20 reviews, 62 commits in 2 years 4 months
Contributions summary:André primarily contributed to the `pry/pry` repository by addressing bugs, improving code quality, and updating documentation. They fixed color-related issues within the text helper functions. They also corrected regular expression errors and updated references to reflect changes in project URLs. Additionally, the user made several changes related to platform compatibility, including fixing specs for Windows and removing support for older Ruby versions.
irbpryconsoleruntimelinux
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