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Julien D.JD

Julien D.

Expert .NET / C# · React · Angular · Blazor

€650/day
Maisons-Alfort, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Full stack developer with over 15 years of experience, I support large groups and scale-ups in the design and development of robust and scalable web applications.

My expertise covers the entire technical chain.
Backend: C# / .NET, REST API architecture, microservices, Azure
Frontend: React, Next.js, Angular, TypeScript
Data & Ops: SQL Server, PostgreSQL, Docker, CI/CD
Sectors: banking & finance, media, proptech, B2B SaaS.

I integrate AI into my daily workflow: I implemented Claude Code as a team development tool at Edenred, with structured project rules (claude.md, agent.md, .claude/rules) and trained the team on its adoption.

What I bring to a mission: autonomy, product vision, and the ability to deliver quickly without sacrificing code quality.

Available for contract or fixed-price missions; remote Île-de-France.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Maisons-Alfort (up to 30km)

Experience

  • Edenred
    Lead .NET / Blazor Developer
    TECH
    July 2023 - Today (3 years and 1 month)
    Issy-les-Moulineaux, France
    As Lead Developer within an international team based in Romania (4 developers, 1 PO), I am managing the design and development of a Blazor Backoffice application for internal incident management. Communication and rituals are entirely in English.

    Architecture & Development: Software architecture, development of reusable Blazor components, code reviews (PRs). Daily technical support and team mentoring.

    AI-assisted development: Setting up the Claude Code environment for the team: configuring project rules (claude.md, agent.md, .claude/rules), defining guidelines for AI usage, and training on daily adoption.

    Recruitment & Onboarding: Conducting technical interviews and training new joiners.

    Coordination & CI/CD: Coordinating with product and infrastructure teams. Improving CI/CD pipelines and development workflows.
    .NET Blazor Azure DevOps Docker Generative AI
  • Younited Credit
    Full Stack Developer | .Net 7 / Angular
    BANKING AND INSURANCE
    March 2021 - July 2023 (2 years and 4 months)
    Paris, France
    Within the Offer team (5 developers, 1 lead dev, 1 PO), I contributed to the design and development of core business features related to credit offerings.

    Development of .NET microservices, creation of reusable NuGet packages, and implementation of CI/CD pipelines in YAML to automate deployments.

    Bug fixing and enhancements on existing applications, production monitoring, and technical support. Estimating features and presenting technical solutions (frontend/backend) to the team.

    Active participation in backend developer recruitment: conducting interviews and evaluating technical tests.
    C# Angular Azure DevOps .NET CI/CD
  • BNP Paribas CIB
    .Net Developer | .Net Core 3.1 / Angular 9
    BANKING AND INSURANCE
    June 2020 - February 2021 (8 months)
    Paris, France
    Within the ALMT – Treasury ALM team (14 people), I participated in the design and development of a web application dedicated to the management of pre-trade and post-trade operations.

    Development of .NET microservices, implementation of unit tests to ensure the reliability of financial processing. Monitoring deliveries and coordinating with business teams to ensure the conformity of delivered features.
    .NET Core 3.1 C# Angular 9 Git SQL Server

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Education

  • Software Engineering Expert, Information Technology
    IN'TECH
    2010
    Expert en ingénierie du logiciel, Information Technology
  • Bachelor's degree
    Lycée Martin Luther King
    2004
    Bachelor's degree

Skill set

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