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Xavier LerayXL

Xavier Leray

.NET Developer

€350/day
Nantes, FR
8-15 years
ASP.NET Core
ASP.NET Core Web API
C#, WPF
SQL Server
SOLID principles

Average response time: 1 hour

Freelancer profile translated to English.
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About Xavier

20 years of evolving .NET code in demanding environments. Today I am looking for assignments where my business experience and my curiosity for modern practices (.NET 8, CQRS, AI) will make a difference.

  • French

    Native or bilingual

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

Experience

  • LAYER
    Learning
    SOFTWARE PUBLISHING
    July 2025 - January 2026 (6 months)
    Nantes, France
    • Personal learning project on modern .NET architectures and DevOps practices, developed with AI assistance for skill enhancement. Technologies explored: .NET 8, React Native, PostgreSQL, Docker, CI/CD.
    Environment: ASP.NET Core 8.0, Clean Architecture, Entity Framework, PostgreSQL, React Native, Expo, Docker, GitHub Actions, JWT
    • Implementation of a hexagonal architecture for the backend
    • Application of design patterns: CQRS (MediatR), Repository, Dependency Injection, Value Objects
    • Adherence to SOLID and DRY principles
    • Configuration of a CI/CD pipeline with Docker and GitHub Actions
    • Development of a REST API secured with JWT authentication
    ASP.NET Core Web API SQL Server React Native SOLID DevOps
  • BASSETTI Group
    Delphi Integrator Developer
    SOFTWARE PUBLISHING
    May 2023 - June 2025 (2 years and 1 month)
    Nantes, France
    • Within the TEEXMA application for technical expertise management, carried out specific developments meeting client needs by leveraging the TEEXMA API.
    Achievements:
    . Drafting of functional and technical specifications.
    . Delphi developments
    . Drafting of test plans
    Delphi Functional testing Technical specifications
  • Groupe Atlantic
    .NET Developer
    RAW MATERIALS INDUSTRY
    October 2021 - April 2022 (6 months)
    La Roche-sur-Yon, France
    • Industrial in the thermal comfort sector
    Achievements:
    • Development of REST and SOAP web service methods for the industrial client's clients and for its various services.
    . Development of REST API methods
    . Development of a SOAP API method
    . Carrying out unit tests
    . Quoting
    . Code review
    . Demo presentations
    . Technical presentation on policies
    . SONAR corrections
    ASP.NET Core Web API Agile methodology Sonar
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Education

  • Computer Engineering
    National Conservatory of Arts and Crafts
    2008
    Ingénieur en Informatique
  • HND in Management Information Technology
    2000
    BTS Informatique de gestion

Skill set

Agile methodology
CQRS
Unit tests
Artificial intelligence
DevOps
Docker
CI/CD Management
Test Environment Management
Mobile App Deployment
External API integration
Backend Service Development
Performance Optimization
Testing and Quality Assurance

Categories