Freelancer profile translated to English.
Back to original languageAbout Romain
Do you want to create or evolve a web platform, a business application, or a structured and scalable digital product?
I support entrepreneurs, startups, and established companies in thedesign and development of tailor-made solutions**, intervening in product strategy as well as technical architecture and user interface. My approach is to **build clear, high-performing, and maintainable applicationscapable of evolving with your business without generating unnecessary technical debt.
With a technical background starting in 2016 (infrastructure, systems administration, automation), I have progressively evolved towards full-stack development of complete applications, working fromUX/UI design focused on clarity and conversionto the deployment of secure architectures in **React.js**, TypeScript, **Express.js**, and PostgreSQL. **Opquast certified**, I also integrate quality, accessibility, and performance best practices from the design phase.
Whether it's launching a new product, redesigning an existing interface, structuring a technical architecture, or improving the conversion of an online service, my goal remains the same: **to deliver a robust, coherent, and long-lasting solution**.
French
Native or bilingual
English
Fluent
Can work on-site
Lyon (up to 50km), Paris (up to 20km), Nantes (up to 10km), Toulouse (up to 10km), Bordeaux (up to 10km)
Experience
- Maxence JeudyFull-Stack DeveloperSPORTSSeptember 2025 - February 2026 (5 months)Lyon, France
Design and development of a complete digital ecosystem for a sports coach
Website, client/coach application, and administration interface.Notable Contributions:Development of a showcase website presenting offers, programs, and FAQsDesign of a client application enabling:- Program tracking
- Session validation
- Coach/client comments and interactions
Complete UX/UI design for the application and website on FigmaDevelopment of a centralized back-end for managing users, offers, and programsCreation of a dedicated administration interface for content managementManagement of authentication and user rolesOutcome:*Complete digitalization of the coach's business*Automation of client tracking*Centralization of offers and programs in a single systemTechnical Environment:React • Redux • TypeScript • Express • Sequelize / PSQL • GitHub • Vercel - La Ruche des ProsFull-Stack DeveloperCIVIL ENGINEERINGMay 2025 - September 2025 (4 months)Lyon, France
Development of a national platform for connecting construction entrepreneurs.
Objective: to structure a digital mutual aid network (tender calls, professional assistance, resource sales, events), as an alternative to informal WhatsApp groups.Technical Missions & Achievements:- Complete UX/UI design for the application and website on Figma
- Design of the complete application architecture (front + back)
- Development of the showcase website and the web/mobile application
- Implementation of a categorized publication system by tags (tender calls, mutual aid, resources…)
- Setup of an intelligent filtering engine based on user profile and location
- Development of the centralized back-end for user and content management
- Integration of an event management system
Results:*Structuring of a digital network focused on field efficiency*Setup of a scalable architecture ready for national deployment*Centralization of construction industry professional exchanges in a dedicated environmentTechnical Environment:React • Redux • TypeScript • Express • Sequelize / PSQL • GitHub • Vercel - Deadlock FranceFull-Stack DeveloperVIDEO GAMES AND ANIMATIONMarch 2025 - May 2025 (2 months)Lyon, France
Design and development of a web platform for the French-speaking Deadlock game community.
Objective: to centralize information, publish patch notes translated into French, and lay the groundwork for a scalable community platform (player profiles, statistics, events).Notable Contributions:- Development of a modern React website with TypeScript architecture
- Implementation of a public interface optimized for UX/UI
- Development of a dynamic module for managing and publishing patch notes
- Implementation of a structured Express back-end with Sequelize ORM
- Design of the PostgreSQL database
- Setup of an administrator space (user, content, moderation management)
- Secure authentication management
- Continuous deployment via GitHub & Vercel
Outcome:*Launch of a stable and scalable community platform*Structuring of a technical foundation ready to host user profiles and events*Centralization of information for the French-speaking communityTechnical Environment:React • Redux • TypeScript • Express • Sequelize / PSQL • GitHub • Vercel
Reviews
Florent
Directeur - POC Media
Several days project
-
Reviewed on 5/4/2026
Romain was a very engaged and competent collaborator on the mission. Very satisfied with our collaboration.
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Education
- Professional Title Level 6 (RNCP) - Web & Mobile Web Application Designer DeveloperÉcole O'Clock2025Conception d’architectures applicatives (front-end / back-end) Développement full-stack (React, TypeScript, Node.js, Express, SQL) Modélisation de bases de données (PostgreSQL) Mise en place d’API REST sécurisées Gestion d’authentification et sécurisation des accès Tests unitaires et bonnes pratiques qualité Déploiement (Vercel / environnements cloud) Méthodologies agiles (Git, travail en équipe, gestion de projet)
Certifications
- Opquast Certification – Mastery of Quality in Web Projects (Score: 825/1000 – Advanced Level)Opquast2024