Freelancer profile translated to English.
Back to original languageAbout Dimitri
Freelance React & Next.js Developer for over 8 years
I develop applications and websites for startups and SMEs: SaaS, e-commerce, B2B / B2C products, AI
Some clients:Batibig (ERP), SOS Accessoire (e-commerce), Nalo (fintech), Flim (AI), Kastorr (SaaS), Cyclofix (internal app), Exa labs (blockchain)
Experience
- French e-commerce with high traffic (hundreds of thousands of users/month): React / Next.js redesign, design system, performance, and SEO
- MVP & reinforcements (SaaS, ERP, web app): rapid start, regular delivery, code and process improvements
- Audits of production React/Next.js apps: Core Web Vitals, critical bugs, technical debt
What I offer
Tailored support for your needs, from one-off tasks (audits, bug fixes) to long-term projects (redesigns, MVPs, team augmentation). I share my experience to help your team make the right choices
How I work
- Alone or integrated into your team
- Short iteration deliveries
- Real-time code access on GitHub / GitLab
- Technical documentation delivered with the code
- Regular communication
- 100% remote, I have my own professional workspace
Tech Stack
- Typescript, React, Next.js, TailwindCSS
- Node.js, Supabase, PostgreSQL
- AI to accelerate development: Claude Code
- Good development practices: clean code, maintainable architecture, CI/CD, code review, automated tests
📨 Let's discuss your project, I'll replywithin 1 hour
Dimitri Dumont |Freelance React.js & Next.js Developer| SaaS, AI & E-commerce
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lille (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Nantes (up to 50km)
Experience
- ConfidentielFrontend DeveloperE-COMMERCEFebruary 2024 - July 2026 (2 years and 5 months)Paris, FranceComplete redesignof ane-commercewebsite with React and Next.js (App Router). Focus on webperformance(Core Web Vitals), user experience, and accessibility.Work performed:- Technical architecture and technology choices- React / Next.js frontend development with custom features- Development of a design system with a dedicated mobile version- Content integration via internal headless CMS API- Multi-language internationalization (i18n)- Authentication and authorization management- Caching strategy and performance optimizationStack:TypeScript, Next.js app router, React, TailwindCSS, React Query
- BATISERVICESFullstack React DeveloperCIVIL ENGINEERINGJanuary 2026 - April 2026 (3 months)Paris, FranceReact / Node.js Developerfor a BTP business ERPDevelopment andprogressive migrationof a business ERP for the construction sector, from a low-code solution (Retool) to a modern custom web application.Frontend :- Development of rich interfaces in React- Business UI components (advanced DataTables, dynamic filters, complex forms)Backend :- REST API with Node.js and Express- Optimized SQL Server queriesContributions :- Audit and proposal for frontend performance optimization (reduction of loading times, replacement of costly components, lazy loading)- Development of new features and bug fixingTechnical Environment :JavaScript, React, Node.js, Express, SQL Server, Git
- SOS AccessoireFullstack DeveloperE-COMMERCEMay 2024 - December 2024 (7 months)Paris, FranceDevelopment of theredesignof one of the client's websites with a strong focus on **performance**. Project carried out with React, Next.js v15 and Express 👇🧑💻Work performed:- Setup of the front-end project architecture & an API gateway, technologies, and conventions- Development of various features- Implementation of internationalization- Cache management- Integration of headless CMS🛠️Technologies & tools:- TypeScript, Javascript- Next.js v15 app router, React.js- Node & Express- TailwindCSS- Zod- Git
Reviews
Recommendations
MK
+1
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Education
- Professional Bachelor's Degree WIMSIIUT de Reims2019- développement back-end (Symfony) - développement front-end (React, Angular) - développement mobile (React-Native, Ionic) - administration linux et réseaux - base de données
- University Diploma in Technology in Computer ScienceIUT de Reims2018- développement logiciel (Java & C#) - développement web (HTML5/CSS3, PHP/SQL, Symfony) - gestion de base de données - systèmes d’informations - communication - marketing - analyse UML et Merise