Cassio Tavares

Fleet2Go is a web application that imports driver and vehicle data from Mix Telematics servers and creates a report used by clients to pay their employees. The reports are used even in law courts when there is and disagreement between the employee and the employer.

The solution was composed of two different applications. One importer that uses Mix Telematics APIs to import data and one application for the end-user can generate reports, customize, and administrate other data. The database had more than one Terabyte of data and was stored in an AWS MySQL RDS container.

I was responsible for all the algorithms, UI, database, and AWS environment administration.

The Fertilizer App originated from an idea proposed by an agronomist working for a fertilizer company. I designed it to help manage and optimize fertilization plans across multiple farms by accounting for each farm’s unique soil and water characteristics. The application supported different crop types, soil and water analyses, irrigation methods, and watering schedules to calculate the appropriate type and quantity of fertilizer for each crop.

This is a big app that I helped to create in 2005. I worked on it for five years—choosing the technologies, studying the previous version written in Cobol, creating the first lines of code, designing the database, creating Windows Forms UIs and components, discussing the best approach to solve business process, and much more.

The app is used by oil change shops to help them find the correct oils for specific models. The app has more than 50,000 engines that are easily found, informing users of the manufacturer, type, year, and model of the vehicle. After the correct engine is selected, the app shows (especially but not only) various brands of oils and parts that can be used on that specific car.

The app is used by more than 3,000 fuel stations and oil change shops.

Behind the app, there is an API that is commercialized to other software vendors where they can get vehicle data to be used in other systems. This part was my idea.

An add-on for SAP Business One that allows construction companies to manage their work sites, schedule of values, projects, and stages, allowing them to monitor stage balances, purchases, and blanket agreements. The solution was created using UI API and runs inside SAP Business One. There was also an external reports module that was built with Vue.