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Willys MartialWM

Willys Martial

AI Developer | Callbot | Chatbot | Langchain

€450/day
6 projects
La Guadeloupe, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Willys

AI Callbot & Chatbot Developer | Langchain (3 years of experience)


Looking to transform your customer relations, qualify your leads 24/7, or automate your internal processes?

As a conversational AI developer, I design and deploy **intelligent callbots and chatbots that guarantee a concrete Return on Investment (ROI)**: cost reduction, lead generation, and continuously improved customer experience.


AI Developerspecializing in the creation ofcallbots & chatbots**, I have been involved in complex projects for over 3 years, particularly in the medical & wellness (Happyvisio, Mobility Care), retail (Tresors d'ailleurs), and sports ( **French Football Federation, French Hockey Federation) sectors.


My role as an AI developer is to provide complete expertise to deliver reliable and secure functionalities, integrating quickly into your teams. Each delivery is designed to be turnkey: a **functional, stable product capable of evolving without technical debt**.




My Services & Areas of Intervention as an AI Developer:
  • Creation of Chatbots & Callbots (conversational & algorithmic)
  • Development using Langchain
  • Integration and management of AI on Microsoft Azure.

I am comfortable in demanding contexts, with regulatory constraints or tight deadlines.


AI Developer Technical Stack: Langchain, Langraph, Microsoft Azure AI, Python, C++, C#, Javascript, Go, Pipecat (Callbots), Botpress (Chatbot), N8N (Chatbot), Typebot (Chatbot), Voiceflow (Chatbot), Retell (Callbot), Vapi (Callbot), Rounded (Callbot)

Need to launch an AI project or strengthen your team?

Let's talk, I am available for an initial video call to **understand your needs, clarify the technical challenges**, and propose a concrete approach.

I respond within the hourand can be available quickly.
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • HAPPYVISIO
    Malt logoOn Malt
    AI Developer Consultant
    HEALTH AND WELLNESS
    July 2025 - September 2025 (1 month)
    • Development of the bot using Botpress with modular logic and custom intent management
    • Integration of a Human-in-the-Loop (HITL) mechanism for supervision and manual handling of sensitive conversations
    • Structuring of dialogue trees according to user typologies and recurring use cases
    • Training of internal teams on Botpress usage and continuous scenario improvement
    • Collection of field feedback and adaptation of flows to maximize fluidity and user satisfaction
    • Implementation of safeguards against prompt hacking (input validation, role isolation, conversational drift monitoring)
    • Design of robust and educational prompts, adapted to elderly audiences (simplified syntax, accessible vocabulary, explicit guidance)
    • Technical and functional documentation to ensure the longevity and autonomy of the team
  • Communauté d'agglomération Riviera du Levant
    AI Developer Consultant
    PUBLIC SECTOR
    May 2025 - Today (1 year and 1 month)
    Development of a RAG chatbot for citizen relationship management

    Populating the model via social feeds (LinkedIn, Instagram, Facebook) orchestrated with N8N

    Semantic indexing of content in Qdrant for vector search

    Integration of Azure Mistral for LLM management and contextual response generation

    Performance and KPI monitoring via Power BI (response rate, engagement, relevance)

    Gathering non-technical user needs and translating them into functional specifications
    Microsoft Azure Qdrant OpenAI artificial intelligence Chatbot
  • Mobility Care
    AI Developer Consultant
    MEDICAL
    November 2024 - February 2025 (3 months)
    Creation of a callbot (voice AI agent) as a receptionist for medical facilities, with multilingual management and intelligent routing

    Compliance with HDS (France) and HIPAA (US) security and confidentiality standards

    Integration of LLM models for understanding patient requests and directing them to the appropriate services

    Gathering business needs from non-technical teams and translating them into functional specifications

    Deployment on secure cloud infrastructure, with monitoring and logs compliant with medical requirements
    callbot Microsoft Azure AI Agent AI Chatbot

Reviews

5.0

Out of 3 ratings

ManagementM

Management

HAPPYVISIO

Reviewed on 9/25/2025

We collaborated with Willys on implementing a chatbot on our website. Willys was very responsive, understood our needs, advised us (and still advises us), and proposed suitable solutions. His work is very professional, he respects deadlines, and anticipates questions. We continue to work with him and highly recommend him.
B

Bassem

Mobility Care

Reviewed on 1/17/2025

Willys is very professional, motivated, and conscientious. I recommend 100%.

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Education

  • Technological Baccalaureate, Management and Business Technologies Sciences
    Lycée Général et Technologique de Baimbridge
    2023
    Baccalauréat technologique, Sciences technologies du management et de la gestion
  • BTS in IT Services for Organizations, Software Solutions and Business Applications Option (SIO SLAM)
    Lycée Général et Technologique de Baimbridge

Certifications

  • Microsoft Azure AI Engineer: Microsoft AI-102
    Microsoft
    2024
    artificial intelligence NLP Mistral Microsoft Azure Chatbot RAG OpenAI callbot Prompt engineering Fine-tuning
  • Botpress Partner Certification
    Botpress
    2024
    conversational agent Chatbot AI Chatbot

Skill set

Categories