Freelancer profile translated to English.
Back to original languageAbout Mathieu
Senior freelance full-stack developer
👋Hello, I'm Mathieu Lopes #Mathieu42
Specialized in **Next.js and modern web development with 10+ years of experience**.
🛠️Stack:Next.js, React, TypeScript, Node.js, Laravel, PHP, JavaScript. Supabase, PostgreSQL, MySQL, Payload CMS, Stripe, Vercel, Sentry. REST API. AI Integration (Vercel AI Gateway). Tests (Vitest). shadcn/ui, Tailwind.
✨ What I offer
- Scalable architecture — clean code, documentation, best practices
- Performance and SEO optimization — Core Web Vitals
- Support from idea to production — estimation, monitoring, deployment
🚀 I intervene in particular for
- Starting a project from scratch
- Migrating or modernizing an existing application
- Joining a team as reinforcement
- Technical audit, performance optimization, or AI integration
📂 Some achievements
- Ongoing project: Next.js 16 SaaS Platform (Supabase, multi-provider AI, Stripe, Payload CMS, multilingual, SEO)
- American fashion company: complete redesign — custom clothing, measurement management (Next.js + Laravel)
- CopyBadge, Delcourt, Malabar Design, YouStory: WordPress, Laravel, Next.js — custom admin panels, external APIs
- Various: Golang, React Native, Android TV, AI (Keras, Vertex AI)
📋 How I work
- Maintainable and scalable code
- Weekly video call check-ins
- Smooth communication (FR/EN)
- Professional liability insurance
- Respect for deadlines
✅ Why choose me
- 10+ years on diverse projects (startups, SMEs, large companies)
- Complete Full-Stack expertise
- Quality deliverables
- Available and responsive
💰Launch offer
New to this platform, I'm offering a **discount for early clients to gather my first reviews**.
📞 Feel free to contact me to discuss your needs.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Mathieu42Senior Full-Stack Software EngineerAugust 2025 - Today (1 year)Paris, France
Founder of Mathieu42
Freelance full-stack engineer with over 10 years of experience. I create modern, performant, and scalable web applications for startups, SMEs, and large companies. My approach combines technical excellence with an understanding of business needs.Technical Expertise
Specializing in **Next.js**, **Laravel**, **PHP**, and **JavaScript**.Full stack: React, TypeScript, Node.js, Supabase, PostgreSQL, WordPress. REST API, server and SEO optimizations, AI integration and automation. I transform your ideas into robust applications, custom software, and efficient APIs, focusing on user experience and business objectives.What I bring to your projects
*Autonomy from day one— quick integration, efficient technical problem-solving, on-time delivery*Robust and maintainable code— quality guaranteed to limit technical debt and maintenance costs*Product vision— proactive suggestions on architecture, UX, and business goals*Flexibility— ad-hoc intervention, strategic reinforcement, or long-term partnershipServices offered
- Web and mobile development
- Maintenance
- Technical consulting
- AI and automation solutions
- SEO optimization
Guarantees
Transparent communication, clear contracts, commitment adherence, regular reporting. Activity covered by professional liability insurance. Autonomous, rigorous, and results-oriented. Available for short or long-term missions.Choosing a senior full-stack developer is investing in performance, reliability, and peace of mind for your projects.I am proactive in technical choices and anticipate challenges to deliver proven solutions.Website: Mathieu42 - ComelseWeb Development EngineerMarch 2019 - August 2025 (6 years and 5 months)Perpignan, France
Web Development Engineer
Design, development, and maintenance of web and mobile applications for various projects.**Full-stack development**: PHP, Laravel, WordPress, WooCommerce, React Native, VueJS. REST API, MySQL databases. Frontend stack: HTML, CSS, JavaScript, jQuery, Sass, LESS. Backend: Go, Swift, Java. Environment: Mac OS, VSCode, GitLab, Slack, Trello.Main missions:- Design and maintenance of web and mobile applications
- Development and maintenance of REST APIs
- SEO and performance optimizations, code quality improvement
- Project management: time and cost estimation, planning, Gantt charts, UML modeling
- Task tracking and development team coordination
- Task runner configuration (Gulp, Grunt, Laravel Mix)
Infrastructure and deployment:- Setup and configuration of Linux servers (DigitalOcean, AWS, o2switch, OVH)
- Server monitoring and surveillance
- Production deployment of releases
- Technical documentation writing
This experience allowed me to master the entire development chain, from design to production, including team management and infrastructure. Hybrid profile (on-site Perpignan and remote). - ComelseWeb Application DeveloperSeptember 2015 - March 2019 (3 years and 6 months)Perpignan, France
Web Application Developer
Design and development of web and mobile applications for various client projects.Full-stack development:PHP, Laravel, WordPress, PrestaShop, Magento. Mobile applications with Ionic and Cordova. Design and development of a machine learning model in Python with Keras. Stack: HTML, CSS, JavaScript, jQuery, AJAX, MySQL, Sass, LESS.Main missions:- Design and development of web and mobile applications
- E-commerce development (WordPress, PrestaShop, Magento)
- SEO and referencing optimizations
- Task runner configuration (Gulp, Grunt, Laravel Mix)
This period consolidated my full-stack web development foundations and introduced AI and machine learning into my career.
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Education
- Mobile Solutions Designer and Developer – Level IIInstitut Méditerranéen d'Etudes et Recherche en Informatique et Robotique (IMERIR)2017Formation spécialisée en développement d'applications mobiles (IMERIR, 2016-2017). Technologies : développement iOS en Swift et Android en Java. Langages complémentaires : Kotlin, Objective-C, SQL, Python. Programme couvert : • Analyse et conception d'applications mobiles sécurisées — veille technologique, analyse des besoins, cahier des charges, méthodologie SCRUM, modélisation • Développement et déploiement — applications mobiles connectées sécurisées, tests unitaires, intégration continue, publication • Optimisation et maintenance — indicateurs de performance, sécurité, optimisation, maintenance corrective et évolutive, documentation technique Cette formation m'a donné les bases du développement mobile natif et hybride, ainsi que les méthodologies de conception et de déploiement.
- Visual Communication Designer, Multimedia Option – Level III, Computer Programming / Software DeveloperL'Idem - Creative Arts School2016Formation en programmation et développement informatique (L'Idem Creative Arts School, 2015-2016). Développement web : PHP, PHP Objet, HTML, CSS, Sass, LESS. JavaScript, Ajax, jQuery, jQuery Mobile. Apache Cordova pour le mobile. CMS : WordPress, Magento. Outils : Git, UML. SEO, cahier des charges web, UX Design, veille technologique. Photoshop pour le web. Programme : algorithmes, cas pratiques, stage en entreprise. Formation fondatrice qui m'a donné les bases du développement web full-stack et de la conception multimédia.