Gustavo H. Mascarenhas Machado

Angi Inc. (2024-2026)

Senior Software Engineer

• As a member of the payments team, I designed and implemented a scalable, reliable, secure and PCI compliant payments ecosystem that processes over $100M per year.
• Harmonized the payments ecosystem architecture, dependencies and practices, reducing the cognitive overload when switching projects and improving the efficiency of AI-supported (agentic) development.
• Built a CLI tool using Go to improve the Developer Experience of the team, reducing the mean time to resolution and great facilitating testing.
• Orchestrated a complex data migration strategy, transforming and moving millions of historical invoices to the new platform with zero data loss.
• Tech stack: PHP8, Symfony 7, Event Sourcing, Domain Driven Design, Hexagonal Architecture, Next.js, React, TypeScript/JavaScript, Go, Kubernetes, Terraform, AWS, Docker, Serverless, PostgreSQL, Redis, et cetera.

Sourceability LLC (2020-2024)

Senior Software Engineer

• Played a pivotal role in the success of the electronic components marketplace sourcengine.com 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)

Founder

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