Freelancer profile translated to English.
Back to original languageAbout Adrien
Fullstack Developer with over 10 years of experience, specializing in the design and development of demanding web and mobile applications, from hyper-growth startups to large enterprises.
My core expertise: modern frontend (React, React Native, TypeScript), with a solid backend foundation (Node.js, PHP) and a rigorous architectural approach (Clean Architecture, DDD, micro-frontend). I don't just deliver working code; I deliver code that lasts.
What sets me apart:
- Comprehensive testing expertise (Jest, RTL, Cypress, Playwright, Vitest) enabling confident deployments without regressions.
- Mature CI/CD practices (GitLab CI, GitHub Actions, trunk-based development) for short and reliable delivery cycles.
- Ability to handle legacy system refactoring: I have migrated several aging systems to modern architectures while maintaining product continuity.
- Product sensibility and natural collaboration with design, backend, and business teams.
- Active use of generative AI (Claude, Cursor) in my workflow to increase velocity without sacrificing quality.
- Passion for knowledge sharing: I have mentored junior developers in various teams on stack, practices, and engineering posture.
I have worked in diverse contexts: regulated fintech (Nickel, several million users), large enterprise B2B SaaS (Edflex, BuyCo), multi-client digital agency (Dernier Cri), and environmental impact (Smartway). This diversity allows me to quickly adapt to any business context and become autonomous on a new codebase.
I am available for remote freelance missions or in Nantes. If you are looking for an engineer who is genuinely invested in your product's success, not just a service provider executing tickets, let's talk.
French
Native or bilingual
English
Conversational
Can work on-site
Nantes (up to 50km)
Experience
- HiPayWeb Frontend DeveloperBANKING AND INSURANCESeptember 2025 - Today (11 months)Nantes, FranceComplete overhaul of the Marketplace & Platforms payment solution within an agile squad (2 backend devs, 1 PM).Mission:Decouple legacy, modernize architecture, and integrate user feedback to strengthen competitive advantage.Achievements:• Design and implementation of a unified PHP/React monorepo (Backend + Frontend) to maximize config, type, and component sharing.• Setup of a robust CI/CD pipeline on GitLab (trunk-based development): automated, fast, and reliable deployments.• Implementation of a comprehensive test pyramid (Vitest, Playwright) covering unit, integration, and E2E levels.• Application of Clean Architecture and DDD principles for clear separation of responsibilities and strong modularity.• Integration of AI agents (Claude, Cursor) into the development workflow: planning, estimation, debugging, and code generation.Environment:• Agile product team• Continuous delivery• Backend/frontend collaborationHigh quality and scalability requirementsTechnologies:React • TypeScript • Vitest • Playwright • GitLab CI/CD • Trunk-based development • Clean Architecture • Micro-frontend • DDD • Generative AI (Claude, Cursor)
- Smartway - Zero GachisWeb Frontend / Backend DeveloperLOGISTICS AND SUPPLY CHAINNovember 2023 - August 2024 (9 months)Saint-Herblain, FranceSmartway is the originator of 'Zero Waste' aisles in supermarkets.Within a team of 2 to 5 developers, I participated in the rewrite of the Food Waste Management System, a critical system for tracking and optimizing food products nearing their expiration date, with the goal of modernizing the architecture, improving performance, and reducing food waste.Achievements:• Partial rewrite of the system (React Native mobile app + Node.js backend), improving performance and scalability.• Design of a modular DDD-oriented architecture to structure business domains and facilitate maintainability.• Implementation of TDD as a central practice, reducing regressions and improving deliverable quality.• Integration of SQLite as a lightweight, embedded persistence layer, suitable for the mobile context.• Setup of a CI/CD pipeline to automate tests and deployments.• Integration with third-party systems to ensure data flow continuity between stores and the platform.• Training and upskilling the team on React Native, Clean Architecture, and test-oriented practices.Environments:Product team (2–5 devs) · High societal impact mission (fighting food waste)Technologies:React Native · Node.js · SQLite · CI/CD · Clean Architecture · DDD · TDD
- BuyCoSenior Frontend DeveloperLOGISTICS AND SUPPLY CHAINMarch 2023 - Today (3 years and 5 months)Nantes, FranceAt Buyco, I contributed to the development of the SaaS web application for container management dedicated to maritime transport, particularly on multimodal routing and real-time tracking features.💻 Tech Stack:React → development of dynamic and maintainable user interfaces.Material UI → implementation of a consistent and scalable design system, ensuring a homogeneous user experience across the platform.✅ Key Achievements:Development and improvement of critical modules related to container routing and shipment tracking.Contribution to UI performance optimization for handling large volumes of real-time data.Integration and customization of Material UI to adapt the design system to the platform's specific needs.Close collaboration with product and backend teams to deliver features aligned with client business needs.👉 Result: a clearer, more performant, and intuitive interface, facilitating logistics tracking for maritime transport stakeholders.
Recommendations
FU
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+5
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Education
- Professional Bachelor's Degree in Multimedia Creation, Digital Communication and Media / MultimediaUniversité de La Rochelle2016Licence Pro Création Multimédia, Communication numérique et média / multimédia
- Multimedia Integration TechniquesCégep de Matane2015Techniques d'Intégration Multimédias