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Nicolas Le MerdyNL

Nicolas Le Merdy

.NET Full Stack Developer

€444/day
Rennes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nicolas

Senior full stack developer with 10 years of experience, I design and deploy robust web applications for ambitious startups and SMEs.
My specialties:
✅ .NET Core / ASP.NET Core applications development — Clean Architecture, DDD
✅ React / TypeScript / Tailwind CSS / Stimulus front-end — performant and accessible interfaces
✅ Technical SEO — server-side rendering, Core Web Vitals, semantic HTML (experience on high-traffic platforms)
✅ Cloud & DevOps — Azure, Docker, GitLab / Azure DevOps CI/CD
✅ Databases — SQL Server, MongoDB, ElasticSearch
Available for full remote work throughout France, on-site in Ille-et-Vilaine.
🚀 Need a fast showcase website? I also create modern, fast, and well-ranked (100/100 SEO) websites with Astro + Tailwind. Delivery in a few days.
📍 EURL Hormessia — Bruz (35)
  • French

    Native or bilingual

Can work on-site
Rennes (up to 50km)

Experience

  • Hellowork
    Full Stack Developer Engineer
    SOFTWARE PUBLISHING
    March 2026 - Today (3 months)
    Rennes, France
    Freelance Mission – Full Stack Engineer at HelloWork
    HelloWork, JobIntree, Ville-Emplois Applications

    Full stack development on several HelloWork group applications, with a strong SEO focus on high-traffic platforms.

    Development and optimization of SEO-oriented front-end (semantic HTML, performance, server-side rendering with Razor Pages)
    CSS integration and redesign with Tailwind CSS
    UX and conversion rate optimization via A/B testing (AB Tasty)
    Back-end development in .NET 8 with stored procedures
    Implementation of a clean architecture (Presenter pattern, layer separation)
    Clean Architecture .NET C# TailwindCSS Stored procedure SEO
  • HelloWork
    Full Stack Developer Engineer
    SOFTWARE PUBLISHING
    April 2025 - December 2025 (8 months)
    Rennes, France
    Freelance Mission – Full Stack Developer Engineer at HelloWork
    As part of a freelance mission at HelloWork, I worked on the MaFormation application, a product dedicated to training search:

    Back-end: development in .NET 8
    Front-end: HTML, Razor Pages, Tailwind CSS, Stimulus.js
    CSS Redesign: improvement and modernization of the user interface
    UX Optimization: implementation and monitoring of A/B tests via AB Tasty
    TailwindCSS ASP.NET Core .NET C# Stimulus ABTasty
  • N2JSoft, (CDI).
    Computer Engineer
    January 2023 - January 2024 (1 year)
    Implementation of a payment control system:
    • Implementation of a new Web application in C# .Net Core, clean architecture, DDD, docker

Recommendations

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MD
Sébastien Latournerie and 1 other person have recommended Nicolas

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Education

  • Embedded Systems Master.
    INSSET in Saint Quentin.
    2014
    Programmation Microcontrôleurs.
  • PROFESSIONAL DEGREE AII in apprenticeship
    P.S.A
    2012
    LICENCE PROFESSIONNELLE AII en alternance

Skill set

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