Rafael Alves Sa

Summary

Five years of Web development.
Three years of full-stack experience, including Python, Node.js and SQL.
Three years of React and JavaScript experience.
Experience working solo and with teams in start-ups and medium-sized enterprises.
Three years of Agile software development.

Software Engineer (2018 - 2020)
Nutmeg, London, UK

Worked on the migration of parts of a Ruby on Rails app to a React & Redux app.
Contributed to a design system made of React components, which improved the design, user experience and accessibility of the React apps. JSON tokens were used to enable business-to-business (B2B) customisations, along with visual regression tests to guarantee the visual correctness of all products.
Wrote unit tests in Jest and Enzyme to maintain the 100% test coverage of the entire codebase, as well as end-to-end tests in Cypress and WebdriverIO.
Configured Jenkins pipelines to optimise the deployment process and to run the end-to-end tests as part of the process.

Software Engineer (2016 - 2018)
Doctify, London, UK

Maintained and implemented new features for the AngularJS website and the private intranet in Ember.js.
Developed new stored procedures for the PostgreSQL database to support new API endpoints and improve its performance.
Created new endpoints for the REST API in Node.js using Express.
Became the user interface/experience (UI/UX) lead following the first year of my employment.
Migrated the AngularJS website to React & Redux with server-side rendering.
Developed widgets in React, which doctors and clinics could embed on their websites.

Web Developer (2016 - 2016)
Kapow SMS Communications, London, UK

Worked on a prototype in Laravel (PHP) with a MySQL database to build a business-to-business (B2B) platform.
Designed and documented a new architecture for the API, with enhanced security and authentication methods.
Provided technical support to the sales and finance teams.

Software Developer (2015 - 2016)
PCTU, Queen Mary University of London, London, UK

Worked solo on a Web-based database to manage clinical trials and associated resources. The platform was originally developed in Symfony and Doctrine (PHP), but later migrated to Django (Python) with a MySQL database.
Created the website for the department where I worked using HTML, CSS and JavaScript.
Developed and performed quality control of OpenClinica and REDCap databases.
Deployed Apache and Tomcat Web servers hosting OpenClinica and REDCap databases.

Programming languages: C, Dart, Haskell, Java, JavaScript, PHP, Python, Rust
Front end: AngularJS, CSS, Cypress, Ember.js, HTML, Jest, React, Redux, WebdriverIO
Back end: Django, Doctrine, Express.js, Flask, Laravel, Node.js, Symfony
Databases: MySQL, PostgreSQL
Tools: Git, Linux, tmux, Unix, Vim/Neovim