Gabriel Queiroz Silva, Software Developer in Brasília - Federal District, Brazil
Gabriel Queiroz Silva

Software Developer in Brasília - Federal District, Brazil

Member since January 10, 2017
Gabriel is a certified Magento developer who writes clean code and follows best practices, and he is also an experienced PHP developer. He has a vast knowledge on Magento (versions 1 and 2) and private cloud management using XenServer and Opscode Chef Server. He decided to have a go at freelancing because he wanted to focus on development, work on interesting projects, and have the freedom to travel.
Gabriel is now available for hire




Brasília - Federal District, Brazil



Preferred Environment

Git, PhpStorm, MacOS

The most amazing...

...project I have worked on was an eCommerce platform, built on top of Magento, used by over 300 eCommerce websites.


  • CTO | Co-Founder

    2008 - 2016
    Flow eCommerce
    • Co-founded and operated a successful startup.
    • Delivered over 300 eCommerce projects for clients from diverse countries such as Brazil, Argentina, Chile, and Bermuda.
    • Provided, in partnership with the government, consulting and created eCommerce websites for more than 30 small-and-medium companies.
    • Managed a team of 7 members in total; apart from freelancers and outsourcing from different cultures and in different locations (Brazil and India).
    • Helped 90+ clients with hosting, using a private cloud composed of around 30 nodes, following a 99.5% uptime SLA and delivering over 2 million page views per month.
    • Developed partnerships with key players in the Brazilian eCommerce market.
    • Implemented the Agile software development methodology using the Scrum framework.
    • Created and maintained over 90 Magento extensions—including payment processing, caching strategies, third party integrations, and UI improvements.
    Technologies: Amazon Web Services (AWS), AWS, Bacula, XenServer, Chef, Python, Ruby, MySQL, PHP 7, PHP 5, Magento 2, Magento 1
  • Consultant

    2009 - 2009
    Timor Leste Republic Government
    • Improved the performance and security of the government’s website production environment (
    Technologies: WordPress, PHP, Ubuntu Linux
  • Web Developer

    2007 - 2007
    International Labour Organization
    • Developed 4 websites for the regional ILO field offices within the ILO global website using the Stellent CMS (Java + Oracle).
    • Created Java components and Python scripts to automate the creation of new websites for the ILO field offices.
    • Installed and supported wiki and project collaboration tools for internal use tested.
    Technologies: Stellent Content Management System, Oracle, Python, Java
  • PHP Specialist

    2006 - 2007
    • Managed a team composed of 7 web developers.
    • Created a process for development cost estimation.
    • Created a process for issues management using Active Collab, an open source alternative to Basecamp.
    Technologies: Linux, Gentoo, Ubuntu Linux, PostgreSQL, MySQL, PHP
  • Project Manager

    2006 - 2006
    • Planned and monitored some of the department’s key projects including: Metro Ethernet, IP Traffic Analyzer, and video/audio conferences for corporate clients.
    Technologies: PMBOK
  • Software Engineer

    2005 - 2006
    • Participated on the successful development of 2 large information systems for the Brazilian government, entirely made in PHP and using Oracle and PostgreSQL as DBMS; being hosted by the Brazilian federal government and used by all of the ministries, government agencies, and the private companies willing to work with the government.
    • Automated the approval of the government marketing campaigns through the development of a Soap API used by government agencies, ministries, and private companies.
    • Managed the training for the Brazilian government data processing department (Serpro) which is responsible for the maintenance of the above mentioned system.
    • Developed a system used in a stand in Rock in Rio Lisbon—where users would take photos and they would be automatically posted to a website.
    • Executed Q&A on projects and fixed some of the company's projects.
    Technologies: Ubuntu, PostgreSQL, MySQL, PHP
  • Web Developer

    2004 - 2005
    Fábrica de Idéias (
    • Developed a digital video recording and tagging system.
    • Participated on the development of a statistical database of all Brazilian municipalities, having the World Bank as a client.
    • Developed 2 websites using the company's home build CMS.
    Technologies: Perl, Shell, Linux, Gentoo, MySQL, PHP
  • Web Developer

    2003 - 2004
    Agência de Notícias dos Direitos da Infância
    • Developed the NGO's website.
    • Developed the NGO's intranet portal.
    • Provided support for the CMS and intranet portal users.
    Technologies: Microsoft SQL Server, ASP


  • Casa Rio Grande do Sul

    Developed, hosted, and supported the Casa RGS website—a local company in Brazil specializing in home decor and wedding registries.

  • Clube de Vinhos GB

    A wine club with a recurring payment solution for subscribed members using as payment methods: credit cards and Boleto (a common Brazilian payment option).

  • Quality Nutrition

    A sports nutrition eCommerce website where I was responsible for the development of extensions regarding tax invoicing, payment, and shipping methods as well as hosting and support

  • International Labour Organization Offices' Websites

    Developed several ILO office websites, using the Stellent CMS (Java + Oracle).

  • Timor Leste Republic Government Website Production Environment

    Hired by the Timorese government as a consultant to improve the performance and security of the government’s website production environment (

  • Coritiba Store

    The official eCommerce website for Coritiba—a soccer team competing in the Brazilian main league. The hosting structure was responsible for handling large traffic spikes whenever a new version of the team's jersey was available.

  • Edições CNBB

    Conferência Nacional dos Bispos do Brasil (CNBB) is the Brazilian representative of the Vatican, and Edições CNBB is the company responsible for selling all of its editorial content to churches in Brazil. Responsible for the development and hosting of the website.

  • Floresta Flores

    This is a flower shop website. I was responsible for payment and shipping method integrations, as well as hosting, and general support

  • AgênciaClick/IsoBar

    As a PHP specialist, I worked as a team leader for the PHP development team; being responsible for Q&A and project management.

  • Tigo Money Official Magento Integration (via Toptal)

    Developed the official integration for the payment method Tigo Money. The development involved checkout modifications and proper order status handling after the payment process has been completed.

  • Magento 2 Tutorial: How to Build a Complete Module (Publication)
    Magento built a reputation as an e-commerce market leader, all thanks to its ease of use and customizability. Getting into the framework was only made easier with the release of Magento 2. In this post, Toptal Software Engineer Gabriel Queiroz Silva gives us a step-by-step tutorial to building your first Magento 2 website.


  • Languages

    PHP 7, PHP 5, PHP, JavaScript, Perl, Python, Java, Ruby
  • Tools

    Magento Modules, PhpStorm, Chef, Apache, NGINX, Bitbucket, Citrix Xencentre, Git, Shell, Stellent Content Management System, Docker Compose, Docker Hub, GitLab, Subversion (SVN)
  • Paradigms

    Agile Software Development, PMBOK, Continuous Delivery (CD), Prototype-based OOP
  • Platforms

    Magento Community Edition, Magento, Magento 2, Magento API, Magento 1, Docker, Xen, Linux, XenServer, Ubuntu Linux, MacOS, Ubuntu, WordPress, Oracle, Amazon Web Services (AWS), New Relic
  • Frameworks

    Knockout (Knockout.js), PHPUnit, ASP, Zend Framework, Hadoop, Apache Spark, Symfony, Prototype Framework
  • Libraries/APIs

  • Storage

    MySQL, Microsoft SQL Server, PostgreSQL, Redis
  • Other

    Client Management, Web Hosting, Ubuntu Server, Bacula, Gentoo, AWS, Unix Shell Scripting, DNS


  • Bachelor's Degree in Electrical Engineering
    2002 - 2008
    Universidade de Brasília - Brasília, DF, Brazil

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