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Portrait of Thomas Gassmann

I'm Thomas Gassmann, a full-stack developer based in France.

I design and build websites and applications, bringing together thoughtful interfaces, solid backends and a love of detail.

Available for freelance, remote and international opportunities.

Let's build something that feels right

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What I do /

Services

I build websites and web applications, from the interface to the database. My technical decisions account for user needs, project constraints and ongoing maintenance.

(01)

full-stack development

I connect interfaces, APIs and databases to build complete applications. I keep code structured and responsibilities clear so the application is easier to maintain and extend.

  • 01Git, Docker
  • 02Node.js, REST APIs
(02)

UX/UI & Frontend

I design clear user journeys and interfaces that adapt to each screen. Information hierarchy, keyboard navigation and visual feedback guide my work to make interactions understandable and accessible.

  • 01Affinity, Figma
  • 02SCSS, Tailwind CSS, GSAP
(03)

Server & backend

I structure data and business logic to provide reliable APIs. Input validation, error handling and response times guide my decisions on the server.

  • 01PHP, Python
  • 02SQL, PostgreSQL, NoSQL
(04)

Research & experimentation

I explore open source tools, AI and development methods to assess what they can bring to a project. I try them before adopting them, taking their limitations and maintenance costs into account.

  • 01AI tools
  • 02Open to freelance work and collaboration

Works

Design Gallery
Cours Legendre
Hominum Website
So'Access Website
Ultrawatt Website
Solarbear Website
My projects

Optimized for every screen size.

I adapt layouts, images and interactions to keep your website readable and easy to use on phones, tablets and computers.

>60%

of your traffic on mobile? Your visitors need to be able to navigate and contact you easily on a small screen.

1 second

of extra waiting matters on mobile. I optimize images and loaded resources to reduce delays.

Desktop preview

Desktop

Tablet preview

Tablet

Phone preview

Phone

1 /2 steps

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