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Justin W.JW

Justin W.

AI Agent, Automation︱N8N Langchain︱Fullstack App

€490/day
5 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Justin

AI Agent and Business Process Automation Specialist - Fullstack Dev


Hi, I'm Justin 👋

I design AI-driven systems that boost your revenue, eliminate repetitive tasks, and help your business run more efficiently.

If you're looking for fast, ROI-oriented execution without the fluff, you've come to the right place.

What I do precisely:

I create custom AI agents, integrations, and tools designed to save time and help your business grow. I build concrete solutions and systems that deliver results.

To date, I have built:
  • Several AI agents currently in production
  • 5 large Frontend/Backend business applications
  • 50+ N8N flows, and it's growing every week

See my latest demo here 👉 agence-ingenia com / demo.html [English]

🏆What sets me apart:

1. Technical Versatility— I master the full stack: LLMs, agents, frontend/backends, API integrations, and UI creation.
2. Proactive Communication— I provide you with detailed progress reports daily.
3. Trilingual— Native French/English and fluent in Mandarin (always useful 😉)

Technologies Used
  • Langchain (For serious stuff)
  • n8n (For simple tasks)
  • LLMs (ChatGPT, Claude, Llama, etc.) and RAG
  • Django / FastAPI (Backend)
  • NextJS / React (User Interface)
  • AWS, Docker (Infrastructure)
I also adapt to your stack.

My Quality Guarantees
  • One month of free customer support to fix any potential bugs
  • Clear communication and transparent progress sharing throughout the project.
  • I respond within an hour via Malt messaging.

So, shall we discuss? 🙌

🔍 Related Searches 🔍

AI Integration; LangChain Developer; n8n Expert; AI Agent Development; AI Workflow Optimization;
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Chinese

    Fluent

Remote only
Primarily works remotely

Experience

  • Agence Ingenia
    Director & IT Project Manager
    June 2025 - Today (1 year)
    AI Agent development and business process automation specialist.
    I create your custom AI assistants.

    More information on agence-ingenia.com/fr/
    AI Agent Generative AI
  • Cyberesist
    Full Stack Developer
    January 2025 - June 2025 (5 months)
    Creation and development of a cybersecurity platform in Django. Responsible for creating new features from A to Z.
    Backend Development Fullstack Python Full-Stack Web Application
  • Wisdome AI
    Fullstack Developer Django / React Next.js
    EDUCATION AND E-LEARNING
    September 2024 - Today (1 year and 9 months)
    Taipei, Taiwan
    EdTech platform designed to optimize student preparation for SAT and TOEIC tests.

    Technologies developed:
    - Backend: Django, Docker, AWS, Terraform, Task Broker
    - Frontend: Next.js + TailwindCSS
    - API for AI Services: FastAPI

    Key Responsibilities:
    - Development of FrontEnd / Backend application within a team of 5 developers
    - Leading Scrum sprints for my team, facilitating collaboration and supporting the team to achieve our goals.
    - Overseeing the launch of new functionalities (software updates) to ensure optimized time-to-market and continuous adaptation to user needs.

Reviews

5.0

Out of 3 ratings

NicolasN

Nicolas

Fit-Routine

Reviewed on 11/20/2025

EXPERIENCE +++ Working with Justin completely changed how I manage my business. Initially, I contacted him to automate repetitive and tedious tasks... and he went far beyond what I imagined. Not only did he implement automations that I likely would never have been able to do on my own, even with the help of tools like ChatGPT, but he also helped me clarify my processes. Thanks to his extremely relevant questions, I was able to better understand what I truly needed and structure my business more effectively. Justin is 200% invested in projects: he doesn't give up until the problem is completely solved, even when unforeseen obstacles arise. You can feel that he cares about the project's success as if it were his own. If you are looking for someone reliable, pedagogical, committed, and capable of transforming your vague ideas into concrete and automated solutions, I recommend Justin without the slightest hesitation.
C

Cédric

Résistez aux hackeurs

Reviewed on 4/11/2025

Excellent developer Conscientious and professional, I recommend!

Recommendations

Nicolas MartinNM
LC
Nicolas Martin and 1 other person have recommended Justin

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Education

  • Business
    Open Source Society University
    2021

Skill set

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