# Your next project. An extra developer on your team.

Website version: https://gilles.mastropasqua.fr/for-agencies/

Language: English

I’m Gilles Mastropasqua, a freelance full-stack developer in France. I help agencies turn designs into working websites, build application features and move existing projects forward with Next.js, React, Payload CMS and PHP.

Independent since 2010 · Based in the French Alps

## Support where your project needs it.

A defined part of a build or support across the project: we can agree on a scope that fits your team and the work already in place.

### React & Next.js interfaces

I can turn your designs into responsive pages and reusable components, with attention to keyboard navigation, mobile use and the technical foundations of SEO.

React · Next.js · TypeScript · Tailwind CSS

### Content management & applications

I can connect the interface to Payload CMS, build content structures and develop interactive features or API integrations for the needs of your client’s website or application.

Payload CMS · APIs · Application logic

### Existing projects & maintenance

I also work on JavaScript and PHP projects that are already running. We can identify the part that needs attention, then plan fixes or new features around the existing codebase.

JavaScript · PHP · CakePHP

## A clear scope, from brief to handover.

Here is how we can organise the collaboration, whether you need a specific feature or broader development support.

### 1. Define the work

We review the brief, designs and existing code, then agree on the deliverables, technical constraints and target schedule before development begins.

### 2. Build and review

We agree on review points so your team can check the implementation as it takes shape. Questions and dependencies are discussed alongside the work they affect.

### 3. Verify and hand over

The agreed scope includes the checks and handover your team needs: for example, mobile and keyboard checks, project-specific tests, setup notes or deployment support.

## Projects behind the services.

A tourism website, an interactive application and a contribution to a shared mapping project. Each case explains the product and my involvement.

[O’Limpide Verdon](https://gilles.mastropasqua.fr/projects/olimpide-verdon/) — Website development

An outdoor adventure website for the Verdon, with a custom interface and content managed through Payload CMS.

[EquiGenes](https://gilles.mastropasqua.fr/projects/equigenes/) — Application development

An equine genetics application combining a coat colour calculator with accessible educational content.

[TET Atlas](https://gilles.mastropasqua.fr/projects/tet-atlas/) — Contributor

A contribution to the interactive mapping application for the Trans Euro Trail.

## Before we work together.

### Can you join a project that has already started?

Yes. Share the current stack, the part you need help with and any relevant designs or documentation. We can use that first review to define a suitable scope.

### Can you work from our designs?

Yes. I can handle the implementation of your interfaces and connect them to the content or application logic. We agree on responsive behaviour and interactions as part of the brief.

### How do we agree on timing and cost?

Send the brief, the current state of the project and your target dates. I can then assess the work and discuss availability, the estimate and the terms of the collaboration with you.

## Tell me where you need support.

Send a short brief, the technologies already in place and your target dates. Links to designs or the current website are useful too.

[Discuss your project](mailto:gilles.mastropasqua@gmail.com?subject=Development%20support%20for%20an%20agency%20project)

## 04 / Get in touch

[gilles.mastropasqua@gmail.com](mailto:gilles.mastropasqua@gmail.com)

[+33 6 63 56 43 62](tel:+33663564362)

[GitHub](https://github.com/gilles-mastropasqua)