Freelancer profile translated to English.
Back to original languageAbout Joseph
Freelance Full-Stack Developer | TypeScript • React • Node.js • SaaS
Full-Stack Developer specializing in TypeScript, I assist startups and SMEs in designing and developing high-performing MVPs, SaaS, and web & mobile applications.
My Positioning:
Transforming a product idea into a robust, scalable, and future-proof technical solution.
🚀 Full-Stack Expertise
Front-End
- React & Next.js Modern, high-performance, and SEO-friendly interfaces
- TypeScript Strict, reliable, and maintainable code
- Optimized UX/UI & accessibility
Back-End
- Node.js & NestJS Secure and scalable REST APIs
- PostgreSQL & MongoDB Solid and efficient data modeling
- Microservices & serverless architecture
- Stripe & Stripe Connect integrations
- AI API Integrations (OpenAI, Anthropic, Gemini)
Mobile
- React Native High-performance iOS & Android applications
🎯 What I Bring
- Product vision (technical & business alignment from the start)
- Clean and scalable Full-Stack architecture
- Tested, documented, and maintainable code
- Integrated DevOps (Docker, CI/CD, cloud deployment)
- Optimized time-to-market through short sprints
I build solid technical foundations to avoid early technical debt
🔄 Methodology
- Scoping → Clear technical specifications
- Design → UX/UI validation
- Development → Rapid iterations & continuous feedback
- Production → Secure deployment & post-launch support
💡 Why Work With Me?
- TypeScript Full-Stack Expertise (React / Node.js / NestJS)
- Experience with SaaS, e-commerce, and business applications
- AI integration into modern products
- Pragmatic and results-oriented approach
My Goal:
Deliver a stable, high-performance product ready to scale
📩 Available for Full-Stack Development missions (React / Node.js / NestJS), MVP creation, SaaS, or web & mobile applications
French
Native or bilingual
English
Fluent
Chinese
Fluent
Can work on-site
Paris (up to 50km), Marseille (up to 50km), Lyon (up to 50km), Toulouse (up to 50km), Nantes (up to 50km)
Experience
- RéassurezVous
On Malt
Dynamic Contact Pool — Reassurezvous CRMBANKING AND INSURANCEMarch 2026 - March 2026Intervention on the existing CRM (Next.js / Supabase) to replace static contact distribution with a dynamic shared pool.Scope:- Atomic contact picking with concurrency management (PostgreSQL SKIP LOCKED)- Statuses: available / in_progress / done / callback- Agent actions: take / next / release- Automatic timeout (30 min) with return to pool- Adding/removing agents during a campaign without redistribution- Adaptation of the operator transfer system (contacts, appointments, callbacks, tasks)- Minimal log table (traceability)- Adaptation of the phoning interface + campaign creation- Backward compatibility with existing campaigns- Bug fix campaign_takeover - majorantDown PaymentMarch 2026 - March 2026As a Full-Stack Developer, I designed and developed a platform connecting students and private tutors, solving critical issues: tedious tutor search, scattered administrative management, and lack of pedagogical follow-up.My Missions:Platform Development for Connection:Design a secure registration and authentication system for students and tutorsImplement an intelligent invitation and connection mechanism between students and tutorsDevelop a dedicated dashboard for each profile (student / tutor) for centralized monitoringCourse and Client Management:Create a comprehensive system for creating and scheduling personalized coursesSet up client management allowing tutors to track their students and their progressAutomate notifications and reminders to streamline communication between both partiesUser Experience Optimization:Develop an intuitive interface that facilitates navigation and immediate useImplement a smooth user journey from registration to booking the first sessionEnsure a responsive and high-performance experience on all devicesMeasurable Results:Simplification of the private tutoring search and booking processSignificant reduction in administrative management time for tutorsImproved user engagement and retentionImpact: A complete solution that goes beyond a simple directory, offering a structured ecosystem that facilitates connection, pedagogical management, and loyalty, generating value for both students and tutors.
- majorantV1 Delivery - Private Tutoring PlatformMarch 2026 - March 2026As a Full-Stack Developer, I designed and developed a platform connecting students and private tutors, solving critical issues: tedious tutor search, scattered administrative management, and lack of pedagogical follow-up.My Missions:Platform Development for Connection:Design a secure registration and authentication system for students and tutorsImplement an intelligent invitation and connection mechanism between students and tutorsDevelop a dedicated dashboard for each profile (student / tutor) for centralized monitoringCourse and Client Management:Create a comprehensive system for creating and scheduling personalized coursesSet up client management allowing tutors to track their students and their progressAutomate notifications and reminders to streamline communication between both partiesUser Experience Optimization:Develop an intuitive interface that facilitates navigation and immediate useImplement a smooth user journey from registration to booking the first sessionEnsure a responsive and high-performance experience on all devicesMeasurable Results:Simplification of the private tutoring search and booking processSignificant reduction in administrative management time for tutorsImproved user engagement and retentionImpact: A complete solution that goes beyond a simple directory, offering a structured ecosystem that facilitates connection, pedagogical management, and loyalty, generating value for both students and tutors.
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Education
- Baccalaureate in Industrial and Sustainable Development TechnologiesLycée DIDEROT PARISBaccalauréat sciences et technologies de l'industrie et du développement durable
- Expert in Software EngineeringEPITECH - European Institute of Technology- Cursus BAC +5 - Pédagogie par projet - Gestion de projet & projets de groupe - Méthode agile & TDD - Langages: - C - C++ - Python - Docker - Javascript - Node js - TypeScript - React - React Native - Jenkins - Postgres - Git
Certifications
- Fullstack Web DeveloperFullstack Web Developer2015
- Next.jsNext.js2018