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Olivier PrêtreOP

Olivier Prêtre

⭐Developer ✔NextJs ✔ReactJS ✔Strapi

On-demand
Paris 12e Arrondissement, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Olivier

Web Developer and Senior Trainer ⭐⭐⭐⭐⭐


Having worked in web agencies (Fi System, Nurun), freelance projects, and computer science schools (WebForce3), my experience is extensive and varied, serving companies of all sizes (many large accounts).

Full-stack web developer with a frontend orientation, experienced, particularly attentive to issues of:
✔ performance (Core Web Vitals),
✔ search engine visibility (technical SEO),
✔ user experience (React),
✔ developer experience,
✔ adherence to graphic design guidelines,

My expertise serving these issues includes:
✅ NextJS, ReactJS for modern, responsive, and high-performance front-end rendering
✅ JavaScript (Vanilla), HTML, CSS, responsive web design
✅ Wordpress, development of dedicated themes
✅ Web performance and technical SEO optimizations

Best practices, code quality and robustness, and attention to detail are the ingredients for successful and sustainable projects.

Ready to assist you with your web projects 👌
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris 12e Arrondissement (up to 50km)

Experience

  • Data For Good
    Frontend Developer
    PUBLIC SECTOR
    February 2025 - Today (1 year and 4 months)
    Eclaireur Public, a joint initiative byAnticorand **Transparency International France**, aims to encourage transparency of public data published by local authorities, municipalities, departments, regions, inter-municipalities, and metropolises, as required by the law for a digital Republic of 2016 for all authorities with over 35,000 inhabitants and 50 full-time equivalents.
    The challenge is twofold: to raise citizens' awareness of local policies and to prevent political dishonesty among elected officials.

    Data visualization is the preferred method for conveying information.

    Development:
    ✅ Frontend development in a team of 5 developers
    ✅ Technologies: NextJS / React, Tanstack React Query, TypeScript / JavaScript, PostgreSQL, D3js
    ✅ Components: Shadcn UI with Tailwind CSS
    ✅ Development dedicated to the user story "interpellation of elected officials"

    Content writing, SEO, UX:
    ✅ Technical SEO and semantic SEO optimization
    ✅ Content writing for the main pages
    ✅ UX: participation in the co-construction of the project through MVP workshops, user journeys and stories, personas, wireframes

    Tools, methodologies:
    ✅ Product, Agility: Scrum, Kanban, Notion, Slack, Nocodb
    ✅ UX/UI: Penpot, Figma, Whimsical
    ✅ Development: Github, code reviews, visual studio, pgAdmin, Clever Cloud
    Next.js React.js Typescript JavaScript TailwindCSS Shadcn d3.js GitHub SEO
  • Association 1651 Ouest
    NextJs ReactJS Strapi Developer
    CULTURE
    October 2023 - Today (2 years and 8 months)
    Paris, France
    • Design and development of a literary game application
    • Frontend built with the NextJs framework based on the ReactJS library
    • Components from Shadcn/UI, Headless UI customized with Tailwind CSS
    • Backoffice with the Headless CMS Strapi, data stored on SQLite
    • Development of a dedicated Strapi plugin (pingenerator) for generating point coordinates on an image serving as a map via a graphical interface
    • Management of self-hosting on Vercel for the Front and Render.com for the back
    • Motion design with GSAP
    NextJs Strapi SQLite GSAP TailwindCSS JavaScript reactJS
  • FUNECAP
    Wordpress SEO Developer / Consultant
    HEALTH AND WELLNESS
    February 2022 - May 2023 (1 year and 4 months)
    Paris, France
    • Cross-functional technical SEO development mission on the sites avis-de-deces.fr, Roc Eclerc, and Roc Eclerc Prévoyance
    • Audit, recommendations, and development of technical SEO optimizations
    • Development of React Blocks Editor / Gutenberg Wordpress via a dedicated plugin
    • Development of fixes on the dedicated theme with Wordpress Bedrock architecture (composerify), Timber templates, and business logic layer on Symfony
    • Development dedicated to image optimization, automated generation of sources sets and ad hoc responsive images for different components
    • Development / optimization of display performance relying on Web Core Vitals,
    • Configuration of the Wordpress performance plugin W3 Total Cache and NGINX server configuration on AWS S3
    • Development / optimization of structured data (JSON-LD)
    CSS3 PHP JavaScript Gutenberg Responsive design Wordpress WooCommerce ReactJS JavaScript SEO

Recommendations

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Former user and 1 other person have recommended Olivier

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Certifications

  • Web Accessibility
    Accessiweb
    2008
    Accessibility
  • Journalist Writer
    EMI-CFD
    2012

Skill set

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