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Charles D'OironCD

Charles D'Oiron

Supermalter

Senior full-stack | AI Engineer | Next Typescript

€950/day
122 projects
Paris, FR
15+ years

Average response time: 4 hours

Freelancer profile translated to English.
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About Charles

🔥 156 Projects completed on Malt (86 is the number of reviews) 🔥


Hello 👋,

I am a Full-Stack Developer specializing in React.Js since 2012.
I offertwocomplementary services:

0️⃣ OpenAI SDK Apps | AI Experimentation & New Use Cases
1️⃣Web and Mobile Project Development
I develop applications and websites using a wide range of modern technologies:
👉 Next.Js (App router / server components)
👉 React Native (Expo / Expo updates)
👉 Typescript / Tailwind
👉 Jest / React testing library / Cypress
👉 Redux ToolKit, RxJs
👉 React-Query - GraphQL, Apollo Client - SWR
👉 NodeJs / Express / Strapi
👉 PostgreSQL / MongoDB
👉 Vercel - Heroku

I make it a point of honor to design ergonomic, fluid, and high-performance products, while supporting clients in their strategic and technical thinking. My profile combining Front development and UX/UI experience allows me to offer a complete approach to digital product creation.

2️⃣Recruitment Support
I support government companies and startups, particularly through Beta.gouv, in their recruitment processes. I intervene during application interviews, bringing my technical expertise to evaluate candidates' skills, while helping to find the best talents to build solid and effective development teams.

🏆
I stay informed and update myself on new practices and technologies every week to offer my clients the best possible solutions.
I am also partnered with an artistic director to offer complete A to Z project management.

💪
With over 120 missions completed on Malt, I am committed to delivering quality results in each of my projects.

👯‍♂️ Feel free to contact me to discuss your development or recruitment needs! 👯‍♂️
  • Spanish

    Fluent

  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Paris (up to 10km)

Experience

  • Administration+ (Beta.gouv)
    Complete Redesign of aplus.beta.gouv.fr
    PUBLIC SECTOR
    January 2025 - Today (1 year and 5 months)
    Paris, France
    Complete redesign over 9 months of work.
    79,170 lines of code.
    1,471 unit tests.
    +1 million lines migrated to the database.

    This project also marks a real change in my way of working.
    Claude Code has become my primary work environment.
    70% of the code is prompted.

    Administration+ is the messaging system that connects professionals (caregivers and operators) of public services to resolve urgent and/or complex administrative blockages for citizens.

    + 700 reports per day - almost 2 per minute.
    1 response posted every 10 seconds.
    + 79% of problems resolved in -7 days.
    +3052 Operators (France services, Urssaf, Assurance Retraite, France titres, DGFIP, Assurance Maladie, MSA, France Travail, Allocation Familiales, La poste)
    + 5100 Caregivers.
    + 8200 active users.
    + 150,000 reports processed per year.

    A complete redesign, full TypeScript — Next.js / tRPC / Prisma — hosted 100% in France on Scalingo SecNumCloud infrastructure.
    The project is open-source.
    Next.js Typescript Prisma CI/CD Management Claude Code
  • Spencer.club
    Founder
    SPORTS
    January 2022 - Today (4 years and 5 months)
    Spencer is a platform that allows supporting offshore racing projects through sponsorship, while providing access to unique rewards, at the heart of the sporting experience.

    Beyond strong and often inaccessible moments, you directly contribute to the financing of the crew's project: you help skippers to consolidate their budget, structure their season, and go further in their sporting commitment.

    The application is under development and constantly evolving.
    Do you have an idea, a contact, a desire for collaboration, or a specific need?
    👉 Feel free to contact me:

    👉 Skippers / Projects: 👉 Sponsors / Users:
    See you soon,
    🏴‍☠️
    Next.js Artificial Intelligence Vercel Stripe tRPC
  • Beta gouv - Agence National de la cohésion des Territoires
    Full-stack Developer - National Agency for Territorial Cohesion
    TELECOMMUNICATIONS
    June 2024 - Today (2 years)
    Paris, France
    Complete redesign and development of the platform "Toutes et tous connecté·e·s" (all-connected.anct.gouv.fr), a digital tool for territories and the reduction of the digital divide, led by the National Agency for Territorial Cohesion (ANCT) as part of the Beta.gouv program.

    The platform allows mayors to report areas with poor mobile phone coverage (4G), and provides local authorities, operators, and state services with a management tool for the deployment of antennas and fiber optics (very high speed). It also includes a section dedicated to the end of copper networks and monitoring fiber optic connections throughout the country.

    Technical Stack: Next.js, Typescript, Prisma, TailwindCSS, DSFR (State Design System). Development compliant with accessibility standards and French state design guidelines.
    Next.js Prisma DSFR TailwindCSS Typescript

Reviews

4.8

Out of 86 ratings

E

Elvira

Infrastructure Numérique

Several days project

-

Reviewed on 2/7/2025

Super travail ! Charles a bien compris nos attentes sur le produit et a livré rapidement une solution top
A

Ambre

Sail cron

Reviewed on 11/6/2023

Un grand merci à Charles d'avoir pris l'initiative de me proposer une refactorisation et mise à jour des librairies utilisées. Extrêmement agréable de travailler avec quelqu'un de compréhensif, réactif, calme et pédagogue ! A très vite !

Charles has chosen to hide 2 reviews

2 written reviews are private.

Recommendations

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Former user and 2 other people have recommended Charles

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Education

  • Developpeur d'applications multimédias. (14 mois).
    Doranco Multimédia
  • Html5 / Css3 / Javascript.
    Openclassroom

Skill set

Categories