Leandro Gehlen
Sócio Proprietário at SLTO Sistemas
Chapecó, Santa Catarina, Brazil
Summary
👤
Senior🎓
Top SchoolLeandro Gehlen is a seasoned full‑stack software engineer and co‑owner of SLTO Sistemas with over a decade of experience building web and hybrid mobile applications since 2004. Trained in Computer Science, he brings deep Delphi and PHP roots plus modern Node.js and Ionic expertise, and manages Linux cloud infrastructure on AWS. As a software architect at PROXSIS he combined server administration with enterprise management systems development, and his open‑source contributions include improving i18n and REST customization in the popular Yii2 PHP framework and modernizing Vue 3 examples in the RxDB project. Comfortable across backend, frontend and mobile stacks, he often bridges legacy Delphi systems and contemporary cloud-native workflows—an asset for teams needing pragmatic migration and integration skills. Based in Chapecó, Brazil, he pairs entrepreneurial ownership with hands‑on coding and a habit of fixing subtle bugs and documentation gaps in community projects.
13 years of coding experience
4 years of employment as a software developer
Bacharel em Ciência da Computação, Bacharel em Ciência da Computação at Unochapecó - Universidade Comunitária da Região de Chapecó
English
Github Skills (24)
yii10
application-framework10
javascript10
rails-i18n10
app-framework10
rxdb10
php-framework10
php10
ember-i18n10
front-end-development10
vue10
i18n-js10
web-framework10
vue-jsx10
api-design9
Programming languages (7)
Github contributions (5)
yiisoft/yii2
May 2014 - Apr 2018
Yii 2: The Fast, Secure and Professional PHP Framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 commits, 23 PRs, 116 comments in 3 years 11 months
Contributions summary:Leandro primarily contributed to the Yii2 framework by updating and improving the internationalization (i18n) functionality. This included adding, renaming, and modifying properties related to currency formatting, such as currency symbols and codes. Furthermore, the user addressed a typo and added comments within the code, enhancing the framework's documentation and overall usability. The user also worked on the rest API, allowing customization in `yii\rest\IndexAction`.
secureprofessionalchinese-simplifiedyiiphp
pubkey/rxdb
Jun 2022 - Aug 2022
A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/
Role in this project:Front-end Developer
Front-end DeveloperContributions:12 commits, 3 PRs, 22 comments in 2 months
Contributions summary:Leandro primarily focused on upgrading the Vue.js-based example application within the RxDB repository. They adapted existing components for Vue 3, refactored code to use path aliases, and addressed linting issues. The contributions also included fixing the binding of the color box in the HeroList component and restoring multitab tests. These changes demonstrate an active role in maintaining and improving the example application's compatibility and functionality.
realtimenosql-databasepouchdbcrdtreactive
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