Development of a website or of a web application. Features may include (but are not limited to) : displaying content depending on users' actions and device (responsive design, using HTML, CSS, and Javascript), implementing easy or complex business logic (algorithms), displaying dashboards filled with real-time data, image upload, collecting payments through Stripe. Test Driven Development will be used if the job involves user stories, so as to ensure maximum reliability. I use the Ruby on Rails framework, with PostGreSQL as a DB management service.