Guilherme Siani
Software Engineer at QuintoAndar
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolGuilherme Siani is a software engineer based in São Paulo with 11 years of experience building backend systems and integrations for fintech and commerce platforms. Currently at QuintoAndar, he brings a strong PHP background honed through roles at Linx, Betalabs and earlier web development work, plus formal training in software architecture. He focuses on maintainable, modern code—evident from open-source contributions that modernized a PHP design-patterns repo with typed return declarations. Comfortable across PHP, JavaScript, MySQL and Linux, he combines hands-on implementation with architecture and technical specification work. Colleagues rely on him for code reviews, API integrations and thoughtful planning of data and class diagrams. His mix of long-term product experience and recent postgraduate architecture study makes him adept at translating business needs into robust backend solutions.
11 years of coding experience
10 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Anhanguera EducacionalPostgraduate Degree, Software and Solutions Architecture, Postgraduate Degree, Software and Solutions Architecture at Instituto de Gestão e Tecnologia da Informação
Portuguese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
oop10
design-patterns10
php10
refactoring8
codelist8
code-templates8
Programming languages (9)
Github contributions (5)
DesignPatternsPHP/DesignPatternsPHP
Mar 2019 - Jul 2021
Sample code for several design patterns in PHP 8.x
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits, 5 PRs in 2 years 4 months
Contributions summary:Guilherme primarily focused on refactoring the codebase, implementing type hints to improve code clarity and maintainability. Their work centered on adding void and string return types in several PHP files, including those related to design patterns like Observer and Prototype. The contributions demonstrate a focus on modernizing the codebase and improving code quality through type declarations, which is common in modern PHP development.
php-8phpdesign-patternmodern-phpphpunit
guilhermesiani/guilhermesiani.github.io
Jul 2020 - Jul 2023
Oficial Site
Contributions:2 reviews, 20 PRs, 85 pushes in 3 years
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