I worked on the development of the SIBH (Integrated River Basin System), a system that integrates and makes available hydrological information from monitoring stations throughout the State of São Paulo, issuing alerts for heavy rains, overflows and critical events. These challenges were overcome using Ruby on Rails, Node.JS, PostgreSQL, Elasticsearch and Grafana technologies.

I worked on the internal development of several systems (scheduling, commission control and call control) using PHP, MySQL and Javascript.

I worked on the implementation of the SCA (Access Control System) for the São Paulo Metro (Green Line) developing the web system using Java Beans (web technology at the time), integration of access control hardware with employee RFID cards. I participated in the development of several parking and parking meter control systems using PHP and C++.

I provided computer technical support for several clients, including configuring computers, servers and network devices. Over time I had the opportunity to learn web programming using PHP, developing small websites for several clients.

I worked as an instructor assisting students in several online courses, in addition to implementing the computer assembly and maintenance course, teaching students how to perform maintenance, replace parts, install operating systems and basic knowledge of computer networks.