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Thomas CaillierezTC

Thomas Caillierez

Supermalter

Python Developer & Business Solutions Expert

€450/day
15 projects
Saint-Omer, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Thomas

🚀 Automate Your Growth

Hello! I am an independent Python developer.
My role? To transform your complex business processes or service ideas into powerful, robust, and intelligent digital tools.

Instead of talking about code, I propose we look at how I address your business challenges through two major pillars:

🛠️ 1. Save Time: Automate Your Internal Processes
I build the "robots" that do the tedious work for you, allowing you to focus on what matters.
• Data Extraction: Creating tools capable of collecting data via APIs and generating PDF reports.
• Custom ERP with Odoo Community: I deploy and customize your business management. Zero monthly subscription and complete control over your data.
• Applied Artificial Intelligence: Integrating AI to predict your operational needs.

💡 2. Create Value: New Services for YOUR Clients
Do you have expertise? I industrialize it into a digital product that generates revenue or loyalty.
• Sales Support Tools: Quick quoting applications for tradespeople (work estimates in 3 clicks).
• Specialized Business Platforms: Educational solutions or complex simulators.

💻 My Technical Arsenal (for the curious)
I rely on effective technologies:
• Backend: Python, Django, FastAPI.
• ERP: Odoo Community (Deployment and customization).
• DevOps: Docker, deployment on dedicated servers or Cloud.

Why work with me?
✅ "Business First" Approach: I understand your challenges before touching the keyboard.
✅ Total Transparency: No hidden fees or forced software dependency.
✅ Responsiveness: A single point of contact for fluid communication.

Have a project in mind or a process to automate? Let's discuss it! Click the "Contact" button for an initial conversation about your needs.
  • French

    Native or bilingual

  • English

    Conversational

Can work on-site
Saint-Omer (up to 50km), Lille (up to 50km), Dunkerque (up to 50km), Boulogne-sur-Mer (up to 50km)

Experience

  • SLAP digital
    Malt logoOn Malt
    Implementation of a Quable PIM outgoing flow to a showcase website.
    E-COMMERCE
    May 2026 - June 2026 (1 month)
    Paris, France
    • Mission Description:
    Implementation of a complete and robust automation pipeline to extract, transform, and distribute product data from a PIM (Quable) to a WordPress showcase site.

    The architecture relies on workflow orchestration via n8n and custom micro-services development with FastAPI.

    • Key Achievements:

    - n8n Orchestration & Flows: Design and configuration of an n8n workflow activated periodically (Cron job) to automate the entire processing chain.

    - Data Extraction (ETL): Development of a dedicated FastAPI route for calling the Quable PIM API, retrieving data, and storing it securely on an initial FTP server.

    - Transformation & Cleaning (Pandas): Creation of a second FastAPI route leveraging the power of the Pandas library to clean, structure, and format data before depositing it on a second FTP directory ready to be consumed by WordPress.

    - Maintenance & Clean-up: Integration of an automatic purge routine to delete obsolete data (older than 30 days) to ensure storage optimization.

    • Technical Stack:

    - Orchestration: n8n

    - Backend & API: Python, FastAPI

    - Data Processing: Pandas

    - Protocols & CMS: FTP, REST API (Quable, WordPress)
    n8n Pandas FastAPI n8n Automation Python
  • SLAP digital
    Malt logoOn Malt
    N8N - FastAPI - Development and maintenance of PIM/DAM solutions
    E-COMMERCE
    April 2026 - May 2026
    Paris, France
    - Adapt the existing workflow to an N8N/FastAPI Architecture
    - Building various Docker containers for N8N, PostgreSQL, FastAPI
    - Automating the retrieval of new files uploaded by clients
    - Managing communication between N8N and FastAPI to automate email sending and reporting definition
    - Defining initial processing scripts using Python, Pandas, etc.
    n8n n8n Automation FastAPI Docker Pandas
  • Babylone Consulting
    API Development in a DevOps Environment
    BANKING AND INSURANCE
    July 2025 - Today (1 year and 1 month)
    Beauvais, France
    During this assignment, I was in charge of backend API development using FastAPI. This project allowed me to navigate a complex and demanding DevOps environment, mastering the integration and consumption of SOAP and REST web services. I worked closely with a microservices-based architecture, using tools like Gitea for version control, Drone for continuous integration, and Krakend as an API gateway. This experience strengthened my ability to design robust and secure solutions in a cutting-edge technical ecosystem, meeting the high standards of the insurance and mutuals sector.
    FastAPI External API Integration Microservices Architecture Python Back-End Development

Reviews

5.0

Out of 2 ratings

AurélienA

Aurélien

Agence Debord

Reviewed on 5/21/2025

Thomas is professional, it's a pleasure to work with him.
A

Arnaud

DS AGENCY

Reviewed on 3/5/2025

Thomas is not only a very good developer, he listens to your project and always finds a solution, an alternative to help you achieve it, and with great responsiveness! I highly recommend him.

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Education

  • Data Scientist
    OpenClassrooms
    2021
    Data Scientist
  • Engineer
    Polytech Lille (ex EUDIL)
    2002
    Ingénieur

Skill set

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