As a Senior Developer at New10, I designed and implemented subsystems overseeing all payment and core banking operations. I ensured these systems were robust, secure, and efficient. Django/Python was the chosen language and framework, prized for its pragmatic yet perfectionist philosophy.Beyond my primary responsibilities, I significantly contributed to our DevOps infrastructure, shaping architectural decisions and creating several Terraform modules to optimize IT resource management. Additionally, I developed a Golang-based tool that streamlined deployment orchestration, enhancing system efficiency.

As the Co-Founder and CTO of 9CASH, a fintech firm in São Paulo, I am responsible for all technical components of the organization. My role encompasses developing and implementing the company's technology stack, from writing CSS for the front end to the back-end infrastructure built using Kubernetes. I strive to align our technological resources with business objectives, ensuring the organization's operations and growth.

As one of SendCloud first employees, I helped the company migrating from its initial implementation in PHP to a scalable application written in Python. SendCloud is now Europe's number 1 shipping tool for online stores.My responsibilities range from front-end development with Vue.js and ES6, architecting large crawler systems with Python and RabbitMQ and creating and maintaining an scalable AWS infrastructure.

Backend development of products for the Latin American mobile carriers companies. The products included file syncing applications and e-learning. Very challenging environment due to the huge user base (Millions of users) and complex business rules. The backend was written in Python and deployed to AWS.

Developing the Window 8 Mail client for Yahoo. The application is written in Javascript, HTML e CSS3. The application is tested using Mocha and Sinon.js. We also wrote our own Selenium driver for Metro Applications.

CUBOCC is one of the most respected advertising agencies in Brazil, it has companies like Google, Kraft Foods and Unilever in its portfolio.I was hired to be the lead developer responsible for the Google account. My responsibilities ranged from the design of extremely high concurrency backends in Python (thousands of requests per second) to creating Chrome Experiments to showcase the Google Chrome browser capabilities (HTML5, CSS3, WebGL). Over time my responsibilities extended and I started to lead project for other clients as well.Several technologies were employed, including Google App Engine, NodeJS, MongoDB, WebGL and CSS3

Financial intranet in Python / Django / Sql Server

Developed and executed test cases for VIVO's billing system. Provided training andsupport for the client during the test and implementation phases. Developed new testing toolswhich helped us to decrease the testing time.

As an Embedded Systems Developer, I was tasked with designing and implementing software for high-stakes industrial machinery, overcoming the resource constraints inherent in an 8-bit microcontroller environment.My responsibilities encompassed using C and assembly languages for design, programming, and debugging, with the overarching goal of ensuring system reliability. This demanding role necessitated exceptional problem-solving skills, creativity, and a pursuit of perfection.