Freelancer profile translated to English.
Back to original languageAbout Olivier
Senior Frontend Developer | Expert React Next.js | AI
For over 15 years, I have been supporting product teams in the design, architecture, and evolution of high-stakes SaaS, E-commerce, and Back-office platforms.
My Expertise
- Architecture anddevelopment of complex web applications**, performant and scalable, **AI-assisted(architecture, development, testing, refactoring, code reviews)
- Design and integration of accessible (WCAG) and responsiveDesign Systems
- Design and development of performant and resilient APIs (REST, GraphQL)
- Implementation ofengineering best practices(CI/CD, Feature Flags, GitFlow, Trunk-Based)
- **Technical leadership and team support**: mentoring, code reviews, continuous improvement, workshop facilitation, Agile practices adoption
Mastered Technologies
💅Front-End
- **TypeScript**, JavaScript (ES6+)
- **React**, React Server Components (RSC), Server Actions
- **TailwindCSS, Redux**, Zustand, TanStack Query, RTK Query
- Storybook, **Design Systems**, Accessibility (WCAG 2.x)
⚙️Back-End
- Node.js, NestJS, Express
- REST, GraphQL
- Oracle, SQL Server, MongoDB
I am available for Front-End Tech Lead or Full Stack TypeScript development missions. Feel free to contact me to discuss your technical, organizational, or product challenges.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- SolteoTech Lead FrontENERGY AND UTILITIESFebruary 2025 - May 2026 (1 year and 3 months)Paris, FranceOverhaul of Solteo's SaaS, enabling photovoltaic panel installers to design, size, and manage their installation projects.
- Led the integration of a new Design System and designed a library of reusable components based on Radix UI and TanStack Form.
- Transitioned the development process from GitFlow to a Trunk-Based approach, implementing Feature Flags and Vercel preview environments.
- Redesigned strategic business workflows, enabling 3D modeling of photovoltaic installations, estimation of future yields, and automated generation of commercial proposals.
- Gradual deployment in the Belgian market, internationalization of the site across three locales.
- Significant improvement in software quality and deliverable quality through component standardization and enhancement of development and delivery processes.
- EtsyFounder - 3D Design and Printing CompanyARTS AND CRAFTSOctober 2022 - December 2024 (2 years and 2 months)Paris, FranceEntrepreneurial venture focused on creating and marketing 3D-printed gaming accessories, sold in France and internationally.
- Managed the entire production chain: 3D design and modeling, production, online listing of creations, and customer relations.
- Rewarding experience in entrepreneurship and developing an independent business combining two of my passions: 3D printing and board games.
- NissanTech Lead FrontAUTOMOBILEJuly 2021 - August 2022 (1 year and 1 month)Paris, FranceDevelopment from scratch of the Nissan e-commerce platform, enabling online booking of new vehicles within the dealership network.
- Implementation of the React and Next.js Front-End architecture.
- Design and development of a shared component library documented with Storybook, transversal to group projects.
- Implementation of CI/CD and automation of deployments to various environments.
- Development of the complete user journey: multi-criteria vehicle search, authentication, online booking and payment, connected dashboard.
- Internationalization of the site with next-intl and gradual rollout across four European markets.
- Implementation of best practices for responsive design (mobile-first approach), accessibility, and SEO.
- Facilitation of retrospectives, technical reviews, and participation in team developer recruitment.
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Education
- Computer EngineeringPolytech Paris-Sud (Orsay)2009
Certifications
- Java 6 SE ProgrammerOracle2012
- Spring-CoreZenika2013