Weslley Araújo
Principal Developer (Retainer, Embedded) at Open Source Initiative (OSI)
São Paulo, São Paulo, Brazil
Summary
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RockstarWeslley Araújo is a Principal Developer and prolific open-source maintainer based in São Paulo, focused on developer experience, resilient architectures and pragmatic engineering for teams and products. With projects totaling hundreds of millions of installs, he drives end-to-end technical strategy, CI/CD, internal APIs and legacy-modernization while tailoring solutions to each team’s context. As co-maintainer of mysql2 and creator of tools like Poku and lru.min, he’s fixed critical MySQL2 vulnerabilities, enabled compatibility with Deno/Bun, and improved TypeScript typings to make database clients safer for large ecosystems. He combines hands-on full‑stack delivery and inner-source tooling with advisory work for on‑prem and shared‑hosting clients, translating business needs into secure, maintainable systems. Rarely obvious from titles alone, his work often ships as lightweight, high‑impact developer tooling that reduces operational cost and accelerates testing and caching across many organizations.
5 years of coding experience
4 years of employment as a software developer
Portuguese, English
Github Skills (10)
databases10
typescript10
typescripts10
database-administration10
admin10
type-definition10
mysql10
typescript-types10
database10
nodejs9
Programming languages (9)
Github contributions (5)
sidorares/node-mysql2
Dec 2022 - Apr 2025
:zap: fast mysqljs/mysql compatible mysql driver for node.js
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:32 reviews, 911 PRs, 707 pushes in 2 years 3 months
Contributions summary:Weslley primarily focused on improving the TypeScript typing definitions for the `node-mysql2` library. Their contributions included fixing type conflicts, addressing missing types, and implementing tests to ensure proper type checking. They also worked on the `Promise` wrapper, modifying the types and behavior of methods such as `releaseConnection`. The changes involved updates to various `.d.ts` files, which are critical for the library's usability with TypeScript projects.
database-adapterfaunadbmysqlnode-jssql-database
wellwelwel/svps
Feb 2022 - Sep 2022
🚀 An easier tool to automate your Ubuntu Server setup and domain forwarding.
Contributions:1 release, 52 commits, 24 PRs in 7 months
devopshostskvmrdpserver
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