Adeline Lefebvre

- Designed and developed a Flutter mobile app from scratch in the education sector, targeting both iOS and Android. - Built a Node.js backend with MongoDB to manage user accounts, authentication, and app data. - Implemented in-app purchases to monetize premium content. - Developed a scalable and maintainable architecture for both frontend and backend, ready for future features and growth. - Currently preparing for public release; impact metrics and user feedback will be added post-launch. Tech stack: Flutter, Dart, Node.js, MongoDB, REST APIs, In-App Purchases, Authentication / User Management

Desert Leaves is a foundation dedicated to combating forest degradation in drylands through reforestation projects and knowledge-sharing initiatives in Spain and internationally. Key technical achievements: - Designed and developed a multilingual website from scratch using Next.js, TypeScript and Tailwind CSS: https://www.desertleaves.org → SEO-optimized architecture and increased visitor traffic. - Implemented a headless CMS architecture with Prismic for scalable content management. - Built and integrated email infrastructure using EmailOctopus and Nodemailer. - Implemented payment workflows and online sales using Stripe. - Set up and migrated the organization to Google Workspace via the Google for Nonprofits program. - Launched and managed Google Ads campaigns, including tracking and performance optimization. - Ensured legal compliance, website performance, and ongoing maintenance. Tech stack & tools: - Next.js, TypeScript, Tailwind CSS - Prismic (Headless CMS), Stripe - EmailOctopus, Nodemailer - Google Ads, SEO - Google Workspace

Project: Augmented Reality mystery game developed during a tech residency at Anceu Coliving to revitalize the village through an interactive storytelling experience. Technical contributions: - Designed and implemented a marker-based AR game using A-Frame and MindAR, generating 3D characters from real-person photos. - Integrated real-time interactions and multiplayer coordination via Pusher.js. - Utilized A-Frame Extras to handle 3D scene mechanics, physics, and animations. - Built a non-linear narrative system guiding participants to solve the mystery by following clues revealed by AR characters. - Collaborated in a small cross-functional team on-site, delivering a fully interactive AR experience in 2 months. Tech stack / modules: - AR Frameworks: A-Frame, MindAR (mind-ar-image-aframe) - 3D & Scene Management: A-Frame Extras - Real-time communication: Pusher.js

Cubyn provides automated supply chain, fulfillment, and delivery solutions for e-commerce brands and marketplaces across Europe. Key responsibilities & impact: - Contributed to the development and maintenance of a large-scale microservices architecture (80+ services) orchestrated with Kubernetes on Google Cloud Platform (GCP). - Designed and implemented backend services using Node.js and TypeScript, focusing on scalability, reliability, and performance. - Worked with MySQL, RabbitMQ, and Elasticsearch to support asynchronous workflows, data persistence, and search capabilities. - Participated in building and maintaining CI/CD pipelines using CircleCI, enabling automated testing and deployments. - Developed and maintained frontend features using Vue.js, collaborating closely with product and design teams. - Wrote and maintained unit and integration tests using Jest to ensure code quality and system stability. - Collaborated in an agile, cross-functional environment to deliver features supporting high-volume e-commerce operations. Tech stack: - Backend: Node.js, TypeScript, MySQL, RabbitMQ, Elasticsearch, Jest - Frontend: Vue.js - Infrastructure: Kubernetes, GCP - CI/CD: CircleCI

Klox is a SaaS platform focused on digital communication and data management for businesses. Key technical contributions: - Developed and maintained a fullstack SaaS platform with React/Next.js frontend (TypeScript, Emotion, Material UI, React Admin) and Node.js backend. - Built and consumed GraphQL APIs with Apollo Server and TypeORM for PostgreSQL database management. - Integrated multiple third-party services including HubSpot, Stripe, Pennylane, Google Sheets, and Google Cloud to enhance platform functionality. - Implemented user-facing and admin dashboards, optimizing workflows and data visualization. - Participated in architecture decisions, code reviews, and CI/CD setup to ensure maintainable and scalable solutions. Tech stack: - Frontend: React.js, Next.js, TypeScript, Emotion, Material UI, React Admin - Backend: Node.js, GraphQL, Apollo, TypeORM, PostgreSQL - Integrations / Services: HubSpot, Stripe, Pennylane, Google Sheets, Google Cloud

Project: Early-stage marketplace for French artisans and creators, aimed at helping users discover unique, high-quality products. Key contributions: - Conducted market research and defined product requirements to validate the marketplace concept. - Designed UX/UI prototypes and user flows using Figma, collaborating with a developer to translate ideas into a functional prototype. - Assisted in website planning and architecture, gaining hands-on exposure to web technologies and fullstack development. - Participated in an acceleration program by Pépite in collaboration with Schoolab, learning lean product methodology and early-stage startup processes. - This experience sparked my passion for software development, motivating me to pursue a career as a developer. Skills / Tools: Product Design, UX/UI, Figma, Early-Stage Startup Processes, Market Research

HostnFly manages short-term rentals, handling travelers, keys, cleaning, and insurance. Gained experience in client acquisition, team management, and startup operations.

Supported CSR and sustainability initiatives, contributing to social and environmental impact projects.