Roger Omar Castro

Roger Omar Castro

React Native Engineer - Remote | Buenos Aires, Argentina

Roger is a Javascript Developer with Front End, Back End, and Mobile experience. He is comfortable with multiple JS frameworks and has done work for the Telecommunications, E-commerce, Clinical, Insurance, and Loan industries

A lover of learning, Roger appreciates a good challenge; he finds great satisfaction in solving problems others find too difficult. He is persistent and adaptable in his work.

In addition to the experience listed below, Roger has designed and implemented UI for the websites and mobile apps of several confidential clients.


Agilis Préstamos Hipotecarios
Front End Developer

Front End Developer

Sanatorio Güemes
Front End Developer



Front End Developer
Agilis Prestamos Hipotecarios (February 2018 - July 2018)
Roger's team developed a wasp that allows users to receive a bank loan in less time than the bank could guarantee on its own. As the Javascript developer of his team, Roger focused on improving the entire UI structure of the website. He also worked with Python/Django to make modifications to the website's backend URLs. See Roger's work at

Front End & Mobile Developer
Iúnigo (October 2017 - February 2018)
Roger developed an app that provides customers with better car insurance rates in 4 steps by removing the need for a human salesperson. Additionally, he improved the user interface of both the web and mobile versions of the Iúnigo website.

Front End Developer
Sanatorio Güemes (August 2017 - October 2017)
Roger created new versions of the hospital's Android app, iOS app, and website in order to help patients get examination results or schedule an appointment with their doctor. Using Bootstrap to apply styles, he created the models, views, and control of the mobile apps and modified the back-end URLs. To see Roger's work, visit

Front End Developer
Eulas - Ann Taylor, Loft, L&G Stores (July 2017 - August 2017)
Roger refactored the company's three main websites, migrating them from jQuery to React.js. Additionally, he managed maintenance on the Ann Taylor, Loft, and Lou & Grey websites.

Software & Hardware Developer
Grupo Esfera (September 2016 - March 2017 )
Roger worked on the Wabee project at Grupo Esfera; his team created an IoT device for measuring electrical current and voltage that communicates with the user's cellphone. Roger worked on logistic importation and provided research needed to create the device in addition to software and hardware development.

Spare Parts Engineer
Huawei Technologies (November 2015 - March 2016)
Roger held a wide array of responsibilities during his time with Huawei Technologies, including:

  • Warehouse Management
  • Importation & Exportation processes
  • Repairs
  • Customer Negotiation
  • Quarterly Inventory

Maintenance Manager
Destileria San Andres (September 2014 - August 2015)
As Maintenance Manager, Roger predicted potential issues and performed preventative maintenance as well as both corrective and emergency maintenance. He oversaw the importation process and handled personnel.


Universidad Yacambú (Venezuela)
Electrical Engineering (2005-2012)
Yacambu University is accredited through the Ministerio del Poder Popular para Educación Universitaria, Ciencia y Tecnología, Venezula and holds a very selective admissions policy.

Full Stack Web Development Certification, Computer Software Engineering (2017-2018)
freeCodeCamp is a donor-supported nonprofit organization that uses interactive coding lessons and supplemental materials to provide students with an education in coding. Students gain experience by coding for other nonprofit organizations before earning their certifications.

MERN Stack Front to Back; Angular; Webdevelopment: Moder React and Redux (2017-2018)
Udemy is an international online resource that connects students with the best instructors for their chosen courses.


API, Ajax, Angular 2, Angular 4, Basic Scrum, Bootstrap, C++, CRUD, CSS, Chai, Django, Enzyme, ExpressJs, HTML, Heroku, Ionic 2, Ionic 3, JQuery, JSON, Javascript, Jest, Mocha, MongoDB, Mongoose, Node.js, Oracle, PHP, PL SQL, Postgres, Python,React Native, SASS, SQL, Software Architecture, Vue-router, Vue.js, Vuetify, Vuex, Webpack