Jonathan Calixto Email & Phone Number

State Of Minas Gerais, Brazil

Belo Horizonte, Minas Gerais, Brasil

Web and Mobile Systems Consulting and DevelopmentWe provide tailored solutions across various sectors, leveraging cutting-edge technologies such as Code Versioning and responsive development for diverse devices. Our expertise spans languages like Ruby on Rails, PHP, Python, and Javascript/Typescript, along with frameworks like Reactjs and React Native. We.

Remote Job

I manage a team developing administrative systems and an app for a gas company. Employing Scrum for agile delivery, I analyze demands for new features with technical expertise.

Remote Job

I developed an administrative system to manage gas cylinder sales, including customer requests for exchanges. I utilized Ruby on Rails for the backend, Reactjs for the administrative frontend, and React Native for both customer and installer mobile apps. The system comprises a web application for attendants, a customer app for exchange requests, and.

Belo Horizonte, Minas Gerais

At Rateio Digital, I crafted payment management products for ERPs and marketplaces, employing Ruby on Rails, Python, and ExpressJS on the backend, ReactJS on the web frontend, and React-Native on the mobile frontend. Emphasized user simplicity for buyers and implemented payment splitting for sellers and stores.

Belo Horizonte, Minas Gerais, Brasil

Experience in maintaining systems in PHP for selling airline tickets and miles, in addition to implementing ETL using Airflow for integration between sales and financial systems, developing classes and modules in Python.

Belo Horizonte, Minas Gerais, Brasil

With expertise in developing various systems, ranging from legacy monoliths to microservices architectures, I specialize in online real estate, HR, and mechanical workshop management systems. Primarily utilizing Ruby on Rails and GraphQL, I manage background processing with Sidekiq and Whenever. Proficient in MySQL, PostgreSQL, and Redis databases.

Belo Horizonte, Minas Gerais, Brasil

Development of software for credit cooperatives using PHP and JavaScript, using FrameWork Prototype/jQuery and MySQL database. With integration to the cooperative's banking system database.

Remote Job

Development of management software for Municipal Education, Health, Social Development and Tax Departments using the Ruby language, javascript and the Ruby on Rails jQuery Framework, Prototype and JS backbone, MySQL and PostgreSQL databases. BDD and TDD with the Rspec and Capybara Framework

Sete Lagoas, Minas Gerais, Brasil

Development of management software for Municipal Education, Health, Social Development and Tax Departments using the Ruby language, javascript and the Ruby on Rails jQuery Framework, Prototype and JS backbone, MySQL and PostgreSQL databases. BDD and TDD with the Rspec and Capybara Framework

Belo Horizonte, Minas Gerais, Brasil

Development of software for credit cooperatives using PHP and JavaScript, using FrameWork Prototype/jQuery and MySQL database. With integration to the cooperative's banking system database.

Belo Horizonte, Minas Gerais, Brasil

Development of software for Remote Computer Management for public agencies using PHP, Java, Javascript languages.Development of management software for Municipal Education, Health, Social Development and Tax Departments using the Ruby language, javascript and the Ruby on Rails jQuery Framework, Prototype and JS backbone, MySQL and PostgreSQL databases. BDD.

Belo Horizonte, Minas Gerais, Brasil

Development of distance learning software using PHP, Javascript and MySQL.

Belo Horizonte, Minas Gerais, Brasil

Development of distance learning software using PHP, Javascript and MySQL.

Belo Horizonte, Minas Gerais, Brasil