Mohammed
Jemmoudi

Lead Frontend Developer and UI Kit Maintainer responsible for maintaining the DNA Design System UI kit and all sub-packages in a monorepo architecture. Working on the comprehensive design system that includes reusable React components, icons, templates, and documentation for building modern web applications.

Responsibilities

• Maintain and develop the DNA Design System UI kit (@servier/dna)

• Maintain icon library package (@servier/dna-icons)

• Maintain template components package (@servier/dna-templates)

• Ensure consistency and quality across all design system packages.

• Manage monorepo architecture using Turborepo and PNPM workspaces.

• Maintain documentation sites (Storybook, Docusaurus, UI Lab: a demo app)

• Participate in products using design system packages through:

• Code reviews to ensure proper usage of design system components

• Direct issue resolution and PR creation to assist other developers

• Develop and maintain tooling for design system analytics and monitoring

Key Achievements

• Maintained comprehensive design system monorepo with multiple packages

• Ensured cross-package compatibility and consistency

• Managed versioning and releases across multiple packages

• Maintained high-quality documentation and component examples

• Created DNA Scanner (servier/dna-scanner): A command-line tool written in Go that integrates into CI/CD pipelines across all products using the design system. The scanner collects usage analytics and insights about @servier/dna package adoption, published as a universal library within Servier's artifact repository

• Built Analytics Dashboard: Developed a Next.js application that ingests data from the DNA Scanner and provides:

• Product adoption metrics showing how many products use design system packages

• KPIs and statistics about component usage across the organization

• Component-level impact analysis with detailed import tracking per product, enabling data-driven decisions on component changes and deprecations

• Led a team of 4 frontend developers to develop an e-commerce platform for Royal Canin, focusing on dog and cat food sales, utilizing React.js, TypeScript, and MobX.

• Implemented secure payment functionalities using Adyen and developed a user-friendly, responsive interface with Tailwind CSS.

• Managed API integration and upkeep through Axios, and optimized application builds using Webpack.

• Collaborated with external teams for integrating product catalogs and sheets, providing a custom React.js library to enhance their page functionalities.

• Provided technical mentorship and skill development for the frontend team, ensuring high standards of code quality and adherence to best development practices.

Since joining the company in March 2019, I have worked on various projects, all contributing to the disneylandparis.com digital platform. React.js has been a key library used in these projects, in various forms, including MPA, SPA, and full-stack with the NextJS framework. As a member of the digital team, my responsibilities have included:

• Integrating UI components into the Fantasia-DS design system.

• Implementing various user stories authored by Product Owners.

• Migrating older projects to the new NextJS architecture.

• Conducting unit and functional testing using Jest, Mocha, and React Testing Library.

• Performing end-to-end tests with Cypress and Cucumber.

• Working on mapping API GraphQL data to DLP modules.

• Attending various meetings regarding the new migration framework to Next.js.

• Assisting development teams in their migration process as a technical reference.

• Participating in the recruitment process for new developers to strengthen Disney teams.

• Conducting code reviews, validation, and deploying ongoing developments to test environments.

Overall, my experience at Disneyland Paris as a front-end developer has involved working on complex projects with a variety of technologies and tools, collaborating closely with other members of the digital team to bring new features to the disneylandparis.com platform. My work has been crucial in enhancing the user experience for park visitors and contributing to the success of Disneyland Paris.

Participation in the implementation of the new e-commerce platform for Disneyland Paris. This involves a complete renovation of the online sales platform of Disneyland Paris, known as "Package." The platform enables users to book a complete stay online, including transportation and hotel accommodation.

Implementation of a dynamic mock system to address API issues and facilitate development. This involves a Mock API that uses production data and comes into play when the actual APIs stop responding.

Another important point:

• Writing unit tests (Sinon.js, Mocha, Jest, react-testing-library)

• End-to-end testing with Cypress

• Participation in Agile SAFE rituals.

Thales (e-Jet mobile app)

Participation as a Frontend and Mobile Developer in the implementation of Thales e-JET. The application offers group employees the ability to exchange similar positions for a period of six to twelve months, using a Tinder-like matching system.

AG2R La Mondiale (Vivons-Velo)

Participation in the development of the Vivons-Vélo web and mobile application, dedicated to cycling activities, along with a solidarity program to accumulate donations for the Pasteur Institute.

CHU Troyes (MyGHT eco-system)

Participation in the development of the CALIPSO application. This is a service platform that is part of the MyGHT toolset. Calipso enables nurses and doctors to monitor the elderly and cater to their needs.

HERETIC SAS (Signal-Arnaques.com)

Development of a community website for reporting scams and sharing negative experiences (scams on Leboncoin, phone scams, etc.). The website has now become a reference in this field and offers several tools to combat this type of crime, including a REST API, a Chrome & Firefox extension, and an AI that helps determine whether a person (email, phone number) is trustworthy or not.

Engaged in the collaborative development of TOTAL-GAZ Loyalty, a strategic initiative designed to foster seller loyalty and elevate the visibility of TOTAL's brand offerings.

• Contributed to client engagement during the requirement specification phase, ensuring a clear understanding of project objectives.

• Led the successful creation of the mobile application for Android users, delivering a seamless and user-friendly experience.

• Engineered the robust backend infrastructure utilizing PHP and Symfony, ensuring efficient data management and seamless functionality.

• Performed thorough research and executed advanced enhancements to continually refine and evolve the platform.

• Provided dedicated support to clients throughout the deployment process, ensuring a smooth and successful transition to the new system.

In my capacity as a web developer, I have taken on the roles of designer, developer, and maintainer for websites and applications, harnessing cutting-edge languages and technologies. I have adeptly tackled intricate technical challenges, demonstrated seamless teamwork, and played a pivotal role in refining the company's online footprint to deliver unparalleled user experiences.

Noteworthy achievements encompass:

• Seamlessly incorporating visual identities through HTML and CSS, ensuring a cohesive visual allure.

• Crafting robust backend business solutions with PHP, enhancing functionality and dependability.

• Employing jQuery and JavaScript for frontend advancement, producing immersive and interactive interfaces.

• Crafting user guides to empower efficient navigation for users within the sites and applications under my purview.