Implemented device side logic to enable system level updates (ROM, apps, firmware, etc) and observability that runs on tens of thousands of credit card readers across multiple countries. Solution written in Kotlin on top of AOSP and using protobuf/gRPC for server side communication.

Architected, design and implemented the device side infrastructure for the computer vision(SLAM), object detection and machine learning services. Code-based written in C++ on top of AOSP and using Android binder, MQTT and gRPC for communication. The system was capable of handling tens of gigabytes of data per minute.

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Implemented a common Java framework based on Reactive Programming (RxJava) to share the business logic between Android and IOS applications. It added more responsiveness to the engineering team and reduced the amount of duplicated code across platforms by more than 50%.Implemented a new version of LUA client that goes embedded into more than 50 different devices. Added new features to discover movies titles that increased by 15% the number of old movies rented

Development and production support of backend systems that interact with 6 million Samsung and Cisco Set-Top-Boxes.Defined a development process and evangelized the usage of common tools to support it.Jenkins was adopted as continuous integration and Artifactory as maven repository.Mentoring and coaching a group of 5 system engineers.Development of an enhanced Set-Top-Boxes Video On Demand functionalists: - Added a recommendation engine- Improved the user experience- Added the ability to rate movies - Added the ability to save movies into a "shopping cart".

Development of AstroTV middleware, the first commercial full implementation of the Ginga standard ( Brazilian DTV standard based on the MHP/DVB). It was developed in C/C++/Java with many requirements such as portability, exception-safe, leak-free, thread-safe, performance and standard coverage.Interaction with device manufacturers in order to help them porting AstroTV stack to their platforms.Mentoring and coaching of a small group of system engineers responsible to support device manufacture integrating AstroTV stack.

Design and development of embedded JME application to the Siemens mobile phones.