Gustavo H. Mascarenhas Machado

Software Engineer - Berlin, Germany

[email protected]

Who am I?

I'm a Software Engineer with 14 years of experience specializing in developing scalable, efficient, and business-aligned web applications, as well as modernizing and maintaining legacy systems.

Key expertise:

  • Extensive real-world experience in designing and managing large-scale applications using diverse programming languages and database technologies.
  • Proficient in Linux and cloud systems administration, ensuring robust and reliable infrastructure.
  • MBA with a focus on Business Intelligence, providing a strategic edge in data-driven decision-making.
  • Bachelor’s degree in Biomedical Sciences, adding a unique interdisciplinary perspective.
  • Knowledge of English, French, German, Portuguese and Spanish.


Sourceability LLC (2020 - 2024)

Senior Software Engineer

  • Played a pivotal role in the success of the electronic components marketplace and various internal tools, leading efforts in reverse engineering and migrating legacy applications.
  • Planned, implemented, and maintained high-performance APIs, delivering essential business solutions that significantly contributed to the company's growth and efficiency.
  • Tech stack: PHP7 & PHP8, Symfony 4/5/6, Vue.JS, TypeScript/JavaScript, Microservices, Kubernetes, AWS, Docker, PostgreSQL, Redis, RabbitMQ, et cetera.

FlixBus (2018 - 2020)

Software Engineer, API & Partner Integrations

  • Provided critical support to internal and external customers for seamless API integration, ensuring optimal performance and customer satisfaction.
  • Authored and continuously updated comprehensive documentation for public-facing APIs, facilitating user understanding and successful integrations.
  • Developed an advanced API Management Platform utilizing cutting-edge technologies, driving innovation and enhancing the company's technological capabilities.
  • Tech stack: Kubernetes, AWS (various services), AWS API Gateway, Kong, OpenAPI Specs, Docker, PHP7, Symfony 3/4, PostgreSQL, MySQL, Terraform, Prometheus, Grafana, et cetera.

Global Supps LLC (2016 – 2018)

Software Engineer

  • Designed, implemented, and deployed software products pivotal in generating millions of dollars in revenue, directly contributing to the company's financial success.
  • Coordinated third-party contractors to deliver timely, business-tailored, and budget-compliant solutions, ensuring strategic project alignment and execution.
  • Developed and executed data-driven conversion optimization strategies, significantly boosting revenue and enhancing overall business performance.
  • Tech stack: PHP7, Symfony 3/4, MySQL, PostgreSQL, Redis, Ruby, Wordpress, WooCommerce, Ansible, Capistrano, SASS/SCSS, HTML, Javascript, Vue.js, Scala, Play Framework, Beanstalkd, Linux, AWS.

Independent Consultant (2010 – 2018)

Software Engineer

  • Implemented new features on an e-commerce website, reducing response times by 50% and increasing revenue by 200%.
  • Enhanced legacy applications, significantly improving their safety, reliability, and maintainability.
  • Formulated innovative business strategies that boosted revenue and delivered measurable, improved outcomes for an e-commerce business.
  • Provided strategic advice on hiring decisions, evaluated new projects and third-party proposals, and supervised contractor-executed projects across multiple businesses.
  • Tech stack: PHP7, Symfony 3/4, MySQL, Redis, Magento, Wordpress, WooCommerce, Linux, AWS.

EBANX Ltd. (2013 – 2015)

Integration Manager (2014 - 2015)

  • Effectively managed the Integration Team, delivering impressive results with the company's smallest team.
  • Coordinated the development of new integration solutions, which allowed new customers to integrate with our systems and which increased the company's revenue.
  • Assisted our Sales team during business negotiations by selling the technical aspects of our product and helping close multimillion-dollar contracts.
  • Tech stack: PHP5 & PHP7, Ruby, Ruby on Rails, Magento, MySQL, WooCommerce, Linux, AWS.

Integration Specialist (2013 - 2014)

  • Assisted our customers to solve technical issues, decreasing ticket response times and improving customer satisfaction.
  • Implemented new integration methods that decreased the integration time from many days to less than an hour.
  • Tech stack: PHP5 & PHP7, Ruby, Ruby on Rails, Magento, MySQL, WooCommerce, Linux, AWS.

Meta IT Services (2013 – 2013)

Developer Analyst

  • Modernized and documented several modules of a legacy ERP through reverse engineering.
  • Created a new standard user interface that improved the user experience substantially.
  • Wrote a guide on optimization for the PostgreSQL database that was used by the entire team.
  • Tech stack: PHP5, PostgreSQL

Tradincom Ltda. (2011 – 2013)

Software Engineer/Partner

  • Developed a business-oriented social network focused on the agricultural commodities market
  • Built a tool for trading agricultural commodities online (undisclosed)
  • Tech stack: PHP5, MySQL, Zend Framework, Ruby, Ruby on Rails

Cripon (2010 – 2011)


  • Developed, customized and sold a group buying software which was used by hundreds of brazilian websites.

Embrapa Florestas (2010 – 2010)


VALVe Corporation (2006 – 2008)

Support Wiki Translator


MBA - Business Intelligence (2016 - 2017)

Universidade Positivo

Bachelor of Information Systems (2013 - 2016)

Universidade Tecnológica Federal do Paraná

CORe - Credential of Readiness (2015 - 2015)

HBX | Harvard Business School

Bachelor of Computer Engineering (2011 - 2013)

Universidade Tecnológica Federal do Paraná

Bachelor of Biomedical Sciences (2007 - 2010)

Faculdades Pequeno Príncipe