Freelancer profile translated to English.

Description

Full-Stack Developer Next.js / React – SaaS, Dashboards & Stripe

Looking for a developer capable of designing a modern, scalable, and production-ready web application?

I assist startups, SMEs, and SaaS projects in creating web applications, client areas, custom dashboards, and Stripe subscription systems.

I cover the entire product lifecycle: UX design → development → deployment → maintenance.

Having developed complete platforms like SignalRH (HR SaaS) and Administralib (marketplace with escrow + subscriptions), I combine technical expertise with business understanding to deliver reliable, fast, and business-oriented products.

🚀 Some achievements

SignalRH — Complete HR SaaS: SMS onboarding, questionnaires, multi-indicator dashboards, PDF export, multi-structures.

Administralib — Marketplace & escrow: Stripe subscriptions, expert offers, matchmaking, client areas.

Internal tools — Business dashboards, automations, PDF exports, advanced back-offices.

Premium showcase sites — Modern design, animations, performance & SEO (Next.js + Tailwind).

💡 My expertise

Web development: Next.js 15, React, TypeScript, Prisma, PostgreSQL.

Payment & subscriptions: Stripe (Checkout, Billing, Webhooks, escrow).

Dashboard & SaaS: advanced filters, charts, mobile-first UX, multi-roles.

Infra / DevOps: Docker, Coolify, OVH, Cloudflare, CI/CD, monitoring.

Emailing: Brevo, Resend (notifications, onboarding, secure tokens).

Architecture & product: scope definition, UX optimization, scalability.

🔎 My working method

Needs analysis → Clear technical proposal.

Rapid prototype / UI pre-design.

Iterative development with continuous feedback.

Testing, performance optimization, security.

Go-live (Vercel / Coolify) + maintenance.

📩 Let's talk about your project

Available for frontend, full-stack, or complete SaaS projects.

Quick response, video call possible within the day.

Languages

French
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

SignalRH
Chief Technical Officer
CONSULTING AND AUDITS
October 2025 - Today (10 months)
51100 Reims, France
Responsible for the complete development of the SignalRH SaaS platform.
Product design and technical management: architecture, UX, backend, dashboards, automations, and scalability.

Tasks:

Design and development of the SaaS (Next.js 15 + Prisma)

Creation of employer/employee/expert areas

Implementation of the psychosocial risk questionnaire (Gollac) and data analysis

Development of multi-indicator dashboards (charts, advanced filters)

Management of PDF exports, email & SMS notifications

Stripe integration (monthly & annual subscriptions)

DevOps: Coolify, Docker, PostgreSQL, Cloudflare

Tech: Next.js 15, React, Tailwind, Shadcn, Prisma, PostgreSQL, Stripe, Brevo, Docker, Coolify
Next.js React.js Prisma Stripe SAAS
JVS Mairistem
Programmer Analyst
SOFTWARE PUBLISHING
January 2024 - October 2024 (9 months)
Bezannes, France
Development and maintenance of internal applications for a large group.
Participation in front-end and back-end evolutions, UX improvement, and redesign of key modules.

Tasks:

Front-end feature development (React + Semantic UI)

Backend maintenance and redesign (Laravel)

User interface optimization

Integration of internal APIs and automations

Documentation and continuous process improvement

Tech: Laravel, React.js, Semantic UI, PostgreSQL, Git
React.js Laravel Semantic UI Git Atlassian JIRA
Un Zéro Un
Web Developer
SOCIAL NETWORKS
August 2021 - January 2024 (2 years and 5 months)
Charleville-Mézières, France
Full-stack developer at a digital agency.
Creation of websites, business applications, APIs, and internal tools for various clients.

Tasks:

Development of websites and web applications (Symfony / React Native / Next.js)

Creation and consumption of REST APIs (API Platform)

Front-end redesign and UX optimization

Responsive integration and animations

Evolutionary and corrective maintenance

Tech: Symfony, API Platform, React Native, Next.js, React.js, MySQL, Tailwind
Next.js React.js Symfony PHP Docker

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Professional Bachelor's degree WIMSI (Web, Computer Science, Mobile, SmartIndustries)
IUT Reims
2021
Formation axée sur le développement web et mobile, les architectures modernes et les technologies smart industries. Compétences acquises : développement full-stack, conception d’applications, intégration d’API, UX/UI, gestion de projets et mise en production.
IT Services for Organizations (SIO) - SLAM Option (Solutions
Lycée Franklin Roosevelt
2020
Formation spécialisée dans le développement d’applications, la conception logicielle et la gestion de bases de données. Compétences : développement web, programmation orientée objet, création d’applications métiers, maintenance, analyse des besoins et documentation technique.

Mathis A.

Full-Stack Developer Next.js & SaaS

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