Javier Aguirre is a senior product engineer and founder with 15+ years of experience building full-stack and mobile products across startups and scale-ups from Córdoba, Spain. He combines hands-on engineering (React, React Native, Ruby/Rails, Go, Python) with product-led delivery, driving initiatives from idea to weekly releases and measurable client value. As co-founder and CTO at Wealize he led blockchain-based identity and omnichannel chatbot products, and later improved CI/CD, performance and developer workflows in roles from VP of Engineering to senior individual contributor. He contributes to notable open-source projects, including syntax-highlighting enhancements and meaningful fixes to Mattermost’s React Native app, reflecting a practical cross-platform focus. Known for reducing CI time drastically and prioritizing outcome-driven team processes, he pairs technical depth with a musician’s creative sensibility.
Next generation iOS and Android apps for Mattermost in React Native
Role in this project:
Mobile Developer (iOS/Android)
Contributions:57 reviews, 88 commits, 18 PRs in 1 month
Contributions summary:Javier primarily contributed to the Mattermost mobile application, focusing on React Native code. They addressed a uniqueness issue in the radio setting component and refactored channel list row components to be selectable. Furthermore, the user worked on integrating the integration selector screen and made improvements to the user list components. The commits also include refactoring and bug fixes related to multiselect functionality within the app.
Simple syntax highlighting library written in javascript
Role in this project:
Full-stack Developer
Contributions:6 commits in 2 months
Contributions summary:Javier contributed to the `rainbow` library, primarily focusing on enhancing syntax highlighting capabilities. The commits demonstrate the addition of Lua and Go language support, including defining patterns for keywords, operators, strings, and numeric constants. Furthermore, the user modified existing CSS and HTML files to integrate the new language support and update the project's demos.
javascriptsyntax-highlightinghighlighting
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Javier Aguirre - Senior Product Engineer at FounderNest