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Julien V.JV

Julien V.

Expert Google Apps Script ✨ AI ✨ node next 🚀

€650/day
14 projects
Le Mans, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

🚀 Expert in Engineering, Automation & AI Integration

Senior Developer and University Lecturer, I apply engineering standards (Clean Architecture, DevOps) to Google Workspace, the Web, and AI integration.

**My Goal**: Transform your "homemade" tools into robust, scalable, and intelligent (AI-Driven) applications.


💡 **My Unique Added Value**: One of the few French experts to industrialize Google Apps Script using TypeScript, while securely integrating LLM capabilities.

❌ No more fragile scripts or unstable AI integrations.
✅ Welcome to reliable, typed software solutions connected to your IS.

🎯 My Areas of Expertise:

🔹 Google Workspace & AI Automation**
Audit and refactoring of critical scripts (TypeScript + CLASP).
Creation of tailor-made business tools (HR, Industry, Logistics).
Complex automation, API connections, and custom AI integration (OpenAI, Gemini) into your Sheets/Docs workflows.

🔹 Fullstack Development & AI Engineering:
Modern Web App development (React, Next.js, Node.js, Fastify).
RAG architectures to enable AI to converse with your internal data.
Creation of REST APIs and MCP (Model Context Protocol) servers.
CI/CD deployment, Docker, Linux for managed infrastructures.

🔹 Training & Support:
Skills development (Clean Code, frameworks, AI tools, ...).
NDA Training: my services are eligible for funding.

💼 Why me?With 10 years of business experience (Industry/HR), I understand your challenges (HRIS, workflows, inventory). I don't just deliver code, but a sustainable solution, from SMEs to large corporations (Carrefour, Valeo).

**🛠 Technical Stack**: Google Apps Script, TypeScript, Node.js, React, Next.js, Docker, Bash, Linux, Gemini, RAG, vertex, ...


📩Complex project, automation need, or technical debt to resolve? Let's discuss it!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Le Mans (up to 50km), Paris (up to 20km), Chartres (up to 50km)

Experience

  • dev4me
    Manager
    SOFTWARE PUBLISHING
    December 2021 - Today (4 years and 7 months)
    Freelance activity:
    - Design + development + deployment of applications
    - Dashboards / Dataviz
    - Refactoring legacy code
    - API creation / usage
    - Training / Consulting
    Google Sheets Express Node.js Data Visualization React.js Next.js Docker CI/CD TypeScript
  • DEFTA
    Application Developer
    AUTOMOBILE
    September 2022 - September 2023 (1 year)
    Industrial applications / shopfloor management
    Docker Next.js React.js Express TypeScript Jest Bash React Native
  • Valeo
    Head of IP Communication Training
    AUTOMOBILE
    April 2012 - November 2021 (9 years and 7 months)
    Nogent-le-Rotrou, France
    Automation of administrative processes:
    - Training Plan
    - Placement Plan
    - Security Clearances
    - Professional interviews (generation & reporting) on a national scope
    Data Analysis Human Resources HRIS Project Management

Reviews

5.0

Out of 10 ratings

Y

Yann

Le COAM

Reviewed on 2/12/2025

Great experience with Julien! I recommend him.
J

Jonathan

JW

Reviewed on 11/28/2024

I contacted Julien for automation work via Google Apps Script. He responded very quickly, immediately understood my request, and was very effective in fulfilling it!

Recommendations

JL
FU
FU
+3
Julien Lechat and 5 other people have recommended Julien

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Education

  • Application Designer Developer (CDA)
    Wild Code School
    2023
    typescript / graphQL docker / microservices jest / CI CD react native / typeORM / Apollo Server
  • Web and Mobile Web Developer (DWWM)
    Wild Code School
    2022
    Développeur full-stack unix / git / github HTML5 / CSS3 / React NodeJS / mysql / express SCRUM / Agile

Certifications

Skill set

Categories