Full-stack freelance developer
I write the code, set up the server, and watch what breaks once it is live. Lately: a multi-tenant SaaS for Australian small businesses, a real-time card game, and the invoicing tool I send my own quotes from.
About
Born in New Caledonia, trained in France, based in Australia since January 2026. I learned security alongside development, and it shows: I start a project with authentication and input validation, not with the landing page.
Selected work
Featured projects
Optiva Solutions
2026AI agent
A multi-tenant SaaS that automates the back office of small Australian businesses: quotes, invoicing, appointments, follow-ups. AI agents do the work; the client only ever sees a dashboard.
- FastAPI
- Next.js
- PostgreSQL
- Redis
- n8n
- API Anthropic
Invoice Maker
2026Web
An invoicing tool for freelancers: clients, templates, twenty currencies, discounts and tax. What you see on screen is exactly the PDF that comes out of the printer.
- FastAPI
- Next.js
- PostgreSQL
- Tailwind CSS
- TypeScript
- Alembic
Nine to One
2026Game
A real-time multiplayer card game for two to five players, built for the phone. Empty seats fill up with bots, including one trained by self-play.
- Next.js
- TypeScript
- FastAPI
- WebSocket
- PyTorch
- NumPy
matthieuguiot.dev
2025Web
The site you are reading. Bilingual, with a backoffice that drives every text, project and image without touching the code.
Services
What I offer
Custom Web Development
Design and development of web applications tailored to your business needs. From company websites to complex management platforms, with a strong focus on performance, maintainability, and security.
Business Applications
Development of internal tools that streamline processes, centralize data, and improve operational efficiency across your organization.
APIs & Integrations
Development of robust APIs and integration of third-party services such as payment gateways, CRMs, ERPs, communication tools, and cloud solutions.
Maintenance & Support
Bug fixing, performance optimization, and feature development to keep your applications reliable and evolving over time.
Journal
Latest posts
No published posts yet.
Got a project in mind?
Tell me what you want to build. Three lines is enough. I reply within 48 hours, often the same day.