Freelancer profile translated to English.

Description

Passionate about creation and new technologies, I am a web developer specializing in Next.js, React.js, and Typescript. With several years of experience in advertising agencies, I have honed my project management skills and developed a keen eye for design and UX/UI.

Autonomous and versatile, I enjoy teamwork as much as taking initiative. A true jack-of-all-trades in development, I can juggle multiple tasks and effectively manage a wide variety of assignments.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

Karbonpath
Frontend Developer
CONSULTING AND AUDITS
January 2024 - Today (2 years and 5 months)
Paris, France
Karbonpath is an integrated software platform for non-financial performance and ESG (Environmental, Social, Governance) management.

🛠 Technical Stack: Next.js, Typescript, Ant Design, Tailwind, Node.js, Keycloak, Next Auth, Minio, Superset, GraphQl, Urql, Webpack, Node, Redux. React-Hook-form, ReCharts, i18n, AG Grid React, Storybook, GrowthBook, GitLab, Figma.

🌍 Environment: Native SaaS platform (webapp)

Front-end Design and Development
Development and structuring of reusable React components to ensure a fluid and performant user experience.
Creation and improvement of key pages (authentication, navigation, dynamic modules) with Next.js and TypeScript.
Advanced use of React hooks (useState, useEffect, useMemo) to optimize component lifecycles and improve interface responsiveness.

Integration with Back-end
Implementation of GraphQL requests (query, mutation, subscription) to retrieve and modify data in real-time.
Optimization of exchanges between front-end and API to improve application speed.

Code Performance and Quality
Code refactoring and reduction of technical debt.
Implementation of best practices with Storybook and GrowthBook for A/B testing and component documentation. Maintenance and performance optimization through audits and profiling (React Profiler, Webpack optimizations).

UX/UI & DevOps Collaboration
Participation in the design of intuitive and ergonomic interfaces in collaboration with the product and design team on Figma.
Implementation and improvement of permission and authentication management via Keycloak and NextAuth.
Contributions to CI/CD pipelines on GitLab to automate deployments and ensure consistent code quality.
Front-end design Web project management
X-Studio
Fullstack Developer
CONSULTING AND AUDITS
May 2022 - December 2024 (2 years and 7 months)
Paris, France
X-Studio is a development studio whose mission is to help startups, SMEs, and large corporations quickly create quality external products and internal tools.

Stack: Next.js, Node.js, Typescript, React.js, Tailwind, Airtable, Express, Zapier, Retool, Webflow, Bubble io, Google Cloud Platform, Figma.

Team development and sometimes complete autonomy on MVPs.
Custom REST API creation.
Project architecture.
Creation of client specifications.
Project management and client follow-up.
DevOps.
Code reviews.
UX/UI design and creation of mockups on Figma.
Front-end design Full-stack development Web project management
X-Tract
Fullstack Developer
SPORTS
November 2021 - December 2024 (3 years and 1 month)
Paris, France
X-Tract is a startup incubated at Matrice in Paris, whose mission is to help event organizers simplify race planning and enhance participant safety.

🛠 Technical Stack: React.js, React Native, Material-Ui, Typescript, MapBox, Node.js, FireBase, Axios, Redux. React-Hook-form, Zod Git, GitLab, Figma.

🌍 Environment: webapp and mobile app.

🚀 Development of specific features:

Feature: SMS geolocation request
Development of a system to locate lost participants without internet access.
Creation of a form to initiate a geolocation request, display of requests and positions for the organizer, dedicated interface for the participant to share their position.
SMS sending: Implementation of an SMS sending system via the organizer interface.
Use of browser geolocation API, with a 20s delay to obtain a precise position (< 10m).
Feature: Volunteer and job description management
Implementation of a module to create and assign volunteers to missions.
Creation of a dynamic form with React-Hook-Form for managing job descriptions.
Display of the list of positions and details of each position.
Feature: Secure file upload
Implementation of a file upload system with enhanced extension validation.
Reading and analysis of files to identify their magic number (within the first 512 bytes).
Verification and comparison with a list of authorized extensions.
Security: Rejection of non-compliant files, automatic addition of the extension if missing.
Error handling and client-side feedback.
Web project management Front-end design Full-stack development

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Web developer training
OpenClassrooms
2021
Master 2 Strategy and Change
University of Versailles Saint-Quentin en Yvelines
2022

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Arthur Della Faille

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