You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Julien SchneiderJS

Julien Schneider

.NET C# Back-End Developer | APIs & SaaS

€450/day
Haguenau, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Julien

.NET C# Back-End Developer | Expert in SaaS & Enterprise Solutions (15 years of experience)

I help SaaS, fintech, and SME companies build robust, scalable, and secure back-ends in C# and .NET that accelerate their growth while reducing technical debt and maintenance costs.

With 15 years of experience, including several years in fintech, I have notably:
Designed and developed a SaaS appointment booking platform (like Doctolib) managing several thousand simultaneous users, with high-performance APIs and optimized architecture.

Created a SaaS dedicated to beauty professionals (hairdressers, estheticians) that significantly improved their productivity through seamless management of schedules, clients, and payments.

My experience with institutions like Crédit Mutuel has allowed me to master the security, GDPR compliance, and high availability standards required by financial and critical systems.

My main stack:
C# – .NET 8 / .NET 9 / .NET 10
ASP.NET Core, Entity Framework, SQL Server
Azure, Microservices, Clean Architecture
REST API, performance, and code optimization

I deliver well-documented, tested, and maintainable solutions, tailored to real business needs.

Whether for scratch development, evolution of an existing platform, or legacy migration, I am committed to respecting deadlines while ensuring quality and performance.

Immediately available for remote or hybrid missions (France / remote).

Daily rate: €450/day (adjustable based on duration, scope, and complexity of the mission).

Do you have a SaaS project, a custom web application, or a .NET back-end need?

Contact me, let's chat for 15 minutes to see how I can concretely help you.
  • French

    Native or bilingual

  • English

    Conversational

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

Experience

  • FORTIL
    .Net Developer
    DIGITAL AND IT
    February 2023 - Today (3 years and 4 months)
    Analysis of client needs, creation of functional and technical specifications.

    Development of web and desktop applications.

    Application testing.
    C# Angular ASP.NET MVC T-SQL SQL Server HTML5 JavaScript CSS3 jQuery
  • ATOS
    .Net Developer
    DIGITAL AND IT
    September 2018 - February 2023 (4 years and 5 months)
    Analysis of needs, creation of functional and technical specifications.

    Development and maintenance of web applications.

    Testing and deployment of applications.
    C# ASP.NET MVC ASP.NET T-SQL SQL Server Python VBScript HTML5 CSS3 JavaScript jQuery Angular

Recommendations

Be the first to recommend Julien

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Software Developer
    Afpa
    2011
    Développement logiciel web et application

Skill set

Categories