Antonio Ricardo Leao de Almeida

I worked as a full-stack developer using Java Spring Boot, Angular, and React Native to develop a solution that offered kitchens for rent and allowed travelers to search, rent, pay, and get directions to the kitchen.

Developed a software called PCQ to implement Q methodology.
Q Methodology (Q) is a complete methodology that involves technique (sorting), method (factor analysis), philosophy, ontology, and epistemology. Q reveals and describes divergent views in a group as well as consensus. Q was created by William Stephenson (1902-1989), who held PhDs in physics (1926) and psychology (1929) and studied psychometrics with Charles Spearman, the creator of factor analysis. The project was developed with Michael Stricklin and was sold to many countries.

I participated as a lead developer in developing an application for extracting accounting data from the city of Teresina, exporting it to the XML format defined by the control company (audit). Considering the large volumes of data and the maximum response time desired, we used the Spring Batch framework.

I developed a vaccination control system for a company with five clinics in different cities. All data should be consolidated, following the vaccine stock of each branch (considering expiration dates), patient scheduling, vaccination history, payments, care, and follow-up.

I worked on a system development project to control the issuance of electronic invoices. The system aimed to download and normalize data from all invoices issued within the state of Piaui to other states and from other states to the state of Piaui. The normalized data were analyzed and anomalies were identified for collecting the tax due. The transaction volume was around 100 million items per month.

I developed a system for receiving requests to publish documents in newspapers. The system received PDF documents and exported each page in the image format necessary for editing software with an identifier number in each image that allowed identifying the effective publication of the document.

I developed a price composition system for budgets for a pre-molded factory. The system projected a price based on the necessary inputs (materials and labor) of each item that was part of the project.

Developed a mobile system (Android) to request help in case of emergency. The user presses a sequence of buttons, and an SMS is sent to the list of people on his emergency contact every 30 seconds.

An Angular app as the front end and Java Spring Boot as the back end. I used Amazon Redshift for the data repository, Redis for the cache, and Amazon OpenSearch Service— previously Amazon Elasticsearch Service—for indexing data. The project aimed to estimate shortages in the electronics open market based on clients' bills of materials (BOMs) and help better estimate the supply chain system.

An Android app developed in Kotlin and Spring Boot as the back end. The app was supposed to allow clients access to restaurant menus when their GPS position was inside the restaurant, place orders directly to the kitchen, and have them delivered to their tables.