Chris Feijoo

Frontend & backend web/desktop app development, using mainly: - TypeScript to write robust statically-typed code - React as UI library - NodeJS for backend - GraphQL for API communication - Electron to write desktop applications

Worked in Restaurant Experience (B2B). Enhancements and maintainance of Floorplan, which allows restaurants to manage their tables and reservations. Initiated the VirtualMode project on TFM Front, allowing to run the frontend in isolation, with Virtual API, Storage and Environment, and powerful system of factories to test any state in a few lines of description. Goal was to make the project easily testable, save time on development and testing, and enable prototyping of new features. Worked on multiple purely technical projects like: - Automatic code migrations using JSCodeShift - Frontend Architecture based on React Contexts, to make it easily testable - Cleaning and Simplification of the GraphQL Schema, to make it more conventional.

Worked in Clapps (Client Applications) Team, on the NAF (New Action Foundation) Project. We rebuilt the main application (Action) from scratch, with new UX, and using an up-to-date stack. Clean Architecture was used with NestJS on the Backend-side, React on the Frontend, and GraphQL for the API.

Worked in U2 Team, in charge of transversal projects (Authentication, Backoffice, Public API, Integrations). Worked on new Public API: Authentication, Quota Limiter, Throttling (Concurrent Calls and Rate Limiter). Worked on Login Application, allowing internal and external services to connect using Contentsquare account. Decentralization of authentication using JWKS.

Automation of Timesheets Upload and Extraction for Billing and Payments. Automation of CV Parsing Data Extraction, for matching workers with companies. Setup Unit/E2E Testing environment, and various refactorings.

Development of new Document Explorer Panel, which centralizes upload and view of all kind of documents in a single view. Setup TypeScript, Build Process Improvements.

I was at Teads in the Format Team, which is in charge of the Ad Player. This implied working on the Video/Display Players, Tracking System, A/B Tests, using TypeScript, Scala, Spark and Jupyter Notebooks. I also worked on migration of the codebase to modular JavaScript using Webpack, and various enhancements to the TypeScript codebase.

Piscines are two-weeks intensive courses where 42 students discover new concepts/languages with videos and exercises. First week introduced all base concepts of JavaScript and TypeScript. The second week was about web/desktop app development using React/Redux/Electron.

DotId was a project of a mobile password-less authentication system, we worked on with two other 42 students. Our goal was to provide the easiest and most secure way to connect anywhere. We participated to the 2nd edition of the HEC/42 Startup Launchpad, which helps students create their startup during a 2 months practice-based course.

We worked as two engineers with the then-CTO to build the entire AngularJS frontend & NodeJS backend of the Food-Delivery application.