João Lenon
Software Engineer at Arena
Paraná, Brazil
Summary
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Rockstar🎓
Top SchoolJoão Lenon is a full-stack software engineer from Paraná, Brazil with six to seven years of experience building performant Node.js and React-based products and DevOps pipelines. He co-created Athenna, a plug-and-play Node.js framework used for HTTP servers, workers, CLIs and more, and has optimized its ORM and benchmarking to outperform peers like NestJS and Express. As a member of the Node.js ESM loaders team he implemented programmatic loader registration and a resilient getCWDURL helper, changes that improved TypeScript support and process stability in Node.js core. João has practical production experience at Cloudflare (AI Gateway), Arena, and several startups, shipping cost and log evaluation systems, scalable microservices, CI/CD and observability solutions. He combines a curiosity-driven, pragmatic coding style—favoring simple, reusable code—with a strong focus on customer problems and team collaboration. Outside work he contributes to open source and built tooling (CI, SDKs, test runners) that repeatedly reduce developer friction across teams.
6 years of coding experience
7 years of employment as a software developer
Technologist, Analysis and systems development, Technologist, Analysis and systems development at Instituto Federal do Paraná - IFPR (Curitiba)
English, Portuguese, Spanish, Japanese
Stackoverflow
1reputation
0reached
0answers
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Github Skills (200)
env10
tsc10
expressjs10
windows10
rest-api10
jscodeshift10
javascript10
commander10
artisan10
factories10
linux10
japa10
rest10
js10
cli10
Programming languages (7)
Github contributions (5)
AthennaIO/View
Jan 2023 - Jan 2025
📄 The Athenna template engine. Built on top of Edge.
Contributions:102 PRs, 118 pushes, 9 branches in 2 years
athennaedgeedgejsesmmarkdown
AthennaIO/Config
Mar 2022 - Feb 2023
⚙️ Cache and handle environment variables and config files of Athenna.
Contributions:1 review, 117 commits, 189 PRs in 10 months
environment-variablesconfigurationesmdotenvconfig
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