Freelancer profile translated to English.
Back to original languageAbout Constant
🚀 Frontend-focused Full Stack Developer — product & startup oriented
I build web products from A to Z with tight-knit teams — founders, PMs, designers. From MVP to production product, I handle the entire technical stack with a strong product and creative sensibility. Attentive, curious, and involved, I place as much importance on gathering requirements and understanding the context as on technical execution — because a good product starts with a good understanding of the problem.
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🔧 What I build
Pixel-perfect React/Next.js interfaces and scalable frontend architectures
REST APIs and back-end logic in Node.js
AI Integration: LLM APIs (Claude, OpenAI), AI-powered tools, augmented workflows
Custom WordPress sites: themes, plugins, performance, multilingual
Data pipelines (API → data warehouse → BI dashboard)
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🤝 How I work
Requirements gathering, functional analysis, and technical scoping
Product from scratch with startups directly
Staff Augmentation: integrated into product or agency teams (PMs, designers, devs)
Subcontracting for web agencies
End clients across all sectors
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đź› Stack
JavaScript · TypeScript · React · Next.js · Node.js · PHP · WordPress · HTML/CSS/SCSS · Supabase · BigQuery · Docker · Vercel
Spanish
Native or bilingual
English
Fluent
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- Fédération Française de FootballFrontend DeveloperSPORTSMay 2019 - November 2019 (6 months)Paris, FranceIntegration of the various federation websites (fff.fr, fff-tv, iff...) and development of specific elements.
- FreelancerFull Stack DeveloperDIGITAL AND ITJanuary 2017 - Today (9 years and 5 months)ParisFull stack web development with a frontend expertise — from pixel-perfect integration to React architecture, including Node.js backend and business process automation.I work on three types of missions:
- Agency subcontracting & staff augmentation
Integrated into agency teams (PMs, designers, devs) on client projects. Custom WordPress development (themes, plugins, multilingual, performance), API integration, animations, UX/UI and SEO optimization, Core Web Vitals. Early career: content integration, newsletters, mini CMS in Node.js and PHP.- Startup product — direct client
Full ownership from A to Z with founders and product teams: React/Next.js applications, headless CMS architectures, AI-powered tools (Claude/OpenAI LLM integration), business platforms, data pipelines (API → BigQuery → Looker Studio).- End clients
WordPress site creation, custom theme and plugin development, SEO and performance optimization, API integration, UX/UI design.- Stack: JavaScript · TypeScript · React · Next.js · Node.js · PHP · WordPress · HTML/CSS/SCSS · Supabase · BigQuery · Docker · Vercel
Reviews
Isabelle
freelance
Reviewed on 4/15/2025
Creative and very communicative developer, he pays attention to detail and knows how to respond to UX/UI challenges.
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Education
- Web Developer3WA ACADEMY2016
- Master II Management ScienceIAE de Lille2006