Kelvin Stinghen
Founder Software Engineer at 0K Software
Paraná, Brazil
Summary
🤩
Rockstar🎓
Top SchoolKelvin Stinghen is a founder and software engineer with 13+ years building and maintaining production systems, specializing in Elixir and Ruby. He leads end-to-end projects for startups and SMBs—designing architectures, implementing backends (often with LiveView), configuring deployments on fly.io/AWS, and mentoring teams—while running his own consultancy, 0K Software. A pragmatic engineer who values craftsmanship and sustainable processes, Kelvin has repeatedly taken legacy Ruby systems through successful Elixir rewrites to boost performance and reliability. He’s an active open-source contributor with meaningful commits to elixir-lang/elixir and the widely referenced web-frameworks benchmarking repo, improving core behavior and Plug/Phoenix support. Colleagues describe him as curious and steady—he stays long enough to deliver impact—and he pairs technical depth with client-facing experience in scoping and delivery.
13 years of coding experience
14 years of employment as a software developer
Bachelor’s Degree Computer Science, Bachelor’s Degree Computer Science at FURB
Portuguese, English
Stackoverflow
25reputation
1kreached
2answers
3questions
Github Skills (31)
application-framework10
benchmark10
elixir10
testing10
app-framework10
http10
plug10
benchmarking10
phoenix-liveview10
phoenix-framework10
web-framework10
error-handling10
apache-phoenix10
erlang9
compiler8
Programming languages (12)
Github contributions (5)
elixir-lang/elixir
Dec 2016 - May 2021
Elixir is a dynamic, functional language for building scalable and maintainable applications
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:17 reviews, 24 commits, 30 PRs in 4 years 6 months
Contributions summary:Kelvin primarily contributed to the Elixir language project by modifying core functionalities and improving the testing framework. Their commits involved enhancing the test task behavior, adding new features like monitoring and demonitoring to the `Port` module, and improving error messages for common scenarios. Additionally, the user addressed issues related to the compilation process and warnings within the codebase.
functional-languagescalablefunctional-programmingelixircompiler
the-benchmarker/web-frameworks
May 2017 - May 2017
Which is the fastest web framework?
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:8 commits, 3 PRs, 8 comments in 5 days
Contributions summary:Kelvin primarily contributed to benchmarking various web frameworks within the repository, adding support for new frameworks like Elixir's Plug and Phoenix. They set up and configured the Elixir projects, including application and router setup, alongside necessary test files. Further contributions included improving the performance of the Plug framework by adjusting configuration settings. The user also modified the benchmarking scripts and configuration files.
benchmarkingframeworkfastestmeasurementbenchmark
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