Freelancer profile translated to English.
Back to original languageAbout Johan
Full-stack web developer for over 7 years, I assist companies, brands, and freelancers in creating and redesigning their websites: from showcase sites to custom e-commerce.
I honed my skills on WordPress and Shopify (around fifty projects) before expanding to modern stacks (Astro, Next.js, React) and everything related to visibility: classic SEO, but also GEO/LLMO, being found in the answers of ChatGPT, Claude, or Perplexity, and not just on Google.
Concretely, I deliver fast, well-structured sites designed to convert: product pages, sales funnels, lead capture forms, and integrations with your business tools (CRM, payment, inventory management). I also automate what can be automated thanks to AI.
My approach: understand the real need, challenge when useful, and deliver something clean, maintainable, and profitable.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Caen (up to 50km), Paris (up to 100km), Bordeaux (up to 100km), Nantes (up to 100km), Toulouse (up to 100km)
Experience
- NetportéCreation of a custom media site, optimized for SEO/GEO and monetizedApril 2026 - May 2026 (1 month)Design and development of an independent media site on employee status, designed for natural referencing and monetized by lead generation (CPL model with partner companies).Achievements
- Architecture and complete development of the site in Astro 5 (static generation), TypeScript and Tailwind CSS 4, deployed in CI/CD on Cloudflare Pages.
- Implementation of a content system using Markdown content collections typed and validated by Zod (strict schemas per page type), without a CMS, versioned editing via Git.
- Development of interactive React components (net salary/daily rate simulator, company comparator, lead capture forms) integrated in islands to preserve performance.
- Production of ~130 structured pages optimized for SEO (guides, comparisons, city/job profiles, rated reviews) optimized for E-E-A-T: JSON-LD markup (Article, FAQ, Review, Breadcrumb), internal linking, mastered metadata and sitemap.
- Integration of analytics (GA4 + self-hosted Plausible), transactional emails (Resend), and newsletters (Brevo).
- Core Web Vitals optimization: 0 KB of JS on static pages, AVIF images, high Lighthouse scores (performance / accessibility / SEO).
Stack: Astro · TypeScript · React · Tailwind · Zod · Cloudflare Pages · GA4 · Plausible · Git - Comparateur Notes de FraisMonetized SaaS Comparator, designed for visibility in AI (MCP, GEO, LLMO)January 2026 - April 2026 (3 months)Independent media comparing expense reporting software, designed for two acquisition channels: classic SEO and GEO (visibility in AI responses: ChatGPT, Claude, Perplexity). Monetization through affiliation and lead generation.Achievements
- MCP server in production (Cloudflare Pages Functions, JSON-RPC 2.0) exposing 4 tools searchable by AI assistants; OpenAI Apps SDK integration (4 widgets), llms.txt, multi-registry discovery.
- Custom LLMO tracking: tracking of 21 AI crawlers (GPTBot, ClaudeBot, PerplexityBot...) via Cloudflare GraphQL API, dedicated dashboard (AI traffic share, crawl coverage, bot diversity per page).
- Site in static Astro 6, TypeScript, Tailwind 4, React 19 in islands, CI/CD Cloudflare Pages. ~100 pages (25 rated SaaS profiles, 23 comparisons, 18 guides, 9 stats pages), Zod-validated typed Markdown content.
- React components: 5-step matching comparator, DGFiP mileage calculator, lead capture forms.
- SEO/E-E-A-T: JSON-LD (11 schemas), internal linking, Core Web Vitals (0 KB JS), author/methodology pages, sources Légifrance/URSSAF/BOFiP; audit scripts (indexing, DataForSEO backlinks, linking).
- Monetization/infra: serverless affiliation (/go) + KV click tracking, D1 leads + Resend, analytics Worker Cron pipeline (GSC, GA4, Bing, Cloudflare AI) + admin dashboard, self-hosted Plausible.
Stack: Astro 6, TypeScript, React 19, Tailwind 4, Zod, MCP, OpenAI Apps SDK, Cloudflare Pages/Workers/KV/D1, Resend, Plausible, GSC/GA4/Bing API, DataForSEO, GitHub Actions - Petikids FranceCustom Shopify Store with Advanced Product CustomizationOctober 2025 - December 2025 (2 months)Design and development from scratch of a Shopify store for a French brand of toys and children's accessories, centered around a "charms" product customization system, automated stock synchronization, and a B2B module.Achievements
- Complete store on custom Shrine Pro theme in Liquid: brand identity (turquoise palette, Manjari typography, logo), multilingual (30 languages), Judge.me reviews, editorial pages.
- "Charms" customization system (flagship feature): Shopify metafields architecture (SKU, categories, stock), interactive selector (in JS: tabs, search, offered quotas), interception of the fetch /cart/add to inject each charm as a line item, 16 category pages.
- Stock synchronization via a Cloudflare Worker (orders/paid webhooks + refunds/create): HMAC verification, KV idempotence, symmetric stock adjustment (charms metafields + variants to duplicated SKU) using GraphQL Admin API, auto token rotation, Resend alerting.
- Native Shopify B2B module (blended): pro catalog, passwordless company accounts, manual reseller validation, custom theme layer (Pro badges, switchable B2B menu, product/collection gating via metafields).
- Conversion bricks (bundles, tiered gifts) and technical documentation
Stack: Shopify (Liquid, Metaobjects, Native B2B, GraphQL Admin API), JavaScript, Cloudflare Workers, KV, Cron, Resend, Vitest, HTML, CSS, Git
Reviews
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Education
- Self-taughtYoutube, Udemy, OpenClassrooms...2018