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Dimitri HertzDH

Dimitri Hertz

Supermalter

Senior AI engineer | AI Agents | RAG | MCP

€650/day
27 projects
Strasbourg, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Dimitri

AI engineer specialized in the development of complex applications with generative AI, I have successfully assisted more than 25 clients in their projects.

Some examples of my achievements:
  • Creation and orchestration of AI agent chains (React - Reason & act) enabling querying databases (considering security aspects), creating dashboards, or even creating powerpoints (backend development).
  • Advanced RAG on legal documents (intelligent document splitting by contract article, OCR for scanned documents, intelligent AI agents to find the most relevant articles, contract modifications) - backend development.
  • Advanced AI agent chains & RAG for marine operations related to compliance (fullstack development with graphical interface, backend, and https deployment)
I attach particular importance to advising you in your technical choices, and to finding the most efficient and economical solution for your project, taking into account legal and security aspects.

Do not hesitate to contact me for your:

- Audit and feasibility of your projectin artificial intelligence.
- Development of innovative solutions focused on AI & LLMs(chatbot, RAG, open-source LLM, AI agent chain, langchain, langGraph, etc.).
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Jurni Careers
    Malt logoOn Malt
    AI architecture audit - Development of a personality and job fit test platform
    DIGITAL AND IT
    September 2025 - March 2026 (6 months)
    - Advanced AI & LLM agent chain for personality tests
    - Chatbot in coach mode to guide the user in their responses
    - Complete backend development of the AI platform (LLM, MongoDB, authentication, tests, stripe)
    - Docker deployment
  • Region Lovers
    Malt logoOn Malt
    Development of a travel assistant (with audio)
    TRAVEL AND TOURISM
    March 2025 - July 2025 (4 months)
    Lille, France
    Development of a travel assistant (chatbot with audio) for cruise passengers:
    - creation of an LLM agent chain
    - audio management
    - dynamic information gathering
    - creation of personalized activities and audio

    Development of an AI scraper returning a complex structured JSON object generated from a database
    This automation has accelerated the work of many collectors and greatly improved productivity
    AI Agent Chatbot LangGraph Prompt engineering Langchain
  • Synthetix IA
    Fullstack AI Developer - Implementation of agent chains / RAG
    SOFTWARE PUBLISHING
    September 2024 - April 2026 (1 year and 7 months)
    Lausanne, Switzerland
    Development of agent chain graphs with Langgraph & Langchain
    - Implementation of a Python backend with FastAPI
    - Development of agent chains with Langgraph, Langchain involving the React framework
    - Implementation of RAG with the Qdrant database to improve graph performance
    - Agent chain for generating and executing code
    - Dashboard generation
    - SQL query generation
    Langchain LangGraph FastAPI Generative AI AI Agent

Reviews

5.0

Out of 18 ratings

T

Thaïs

CEO & co-founder - Jurni Careers

Reviewed on 3/25/2026

Another very successful collaboration with Dimitri who proposed optimal integration solutions (in terms of cost and time) and delivered a robust and high-quality version, always on time. A true trusted partner for evolving a product on AI topics!
T

Thaïs

Jurni Careers

Reviewed on 10/20/2025

Great collaboration with Dimitri who, in addition to the backend development of our application, truly took on a CTO role to propose a solution adapted to our situation, our medium-term objectives, and our specific constraints. I highly recommend!

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Recommendations

MC
JF
Bryan RassenBR
Monseigneur Champagne and 2 other people have recommended Dimitri

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Education

  • AI Engineer
    OpenClassrooms
    2026
    L’expert en ingénierie et science des données a pour rôle de conduire des projets complexes, qu’il s'agisse de conception de modèles d’intelligence artificielle, de déploiement de systèmes d’apprentissage automatique ou la création d’infrastructure nécessaire au traitement des données. Ces professionnels sont en mesure d’apporter des solutions concrètes aux défis métiers tels que la prédiction, la classification, la gestion de données structurées et non structurées, et la gestion d’environnement cloud pour le déploiement des modèles.
  • Master 2 Corporate Lawyer and Business Advisor - DJCE, Business Law
    DJCE (Diplôme de Juriste Conseil d'Entreprise)
    2016
    Master 2 Juriste et Conseil d'Entreprise - DJCE, Droit des affaires

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