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Leo DayanLD

Leo Dayan

Full Stack Developer | React | Nodejs | Python

€550/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Leo

Full Stack Developer specializing in generative artificial intelligence, with a strong background in computer science (BSc) and a keen interest in innovative technologies. I have designed and deployed several custom AI portals for large corporations, integrating language models (LLMs) into scalable and secure architectures.

I am proficient in developing solutions in React, Node.js, Python, as well as API integration and pipelines for text, image, or audio generation. My stack includes FastAPI, MongoDB, Docker, CI/CD, and I design user experience-oriented systems around content generation, conversational assistants, and automatic summarization.

Constantly monitoring the latest advancements in generative AI, I am interested in embeddings, data vectorization, retrieval augmented generation (RAG), and dynamic response personalization.

My approach is centered on product efficiency, intelligent automation, and the business value that AI can generate.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Vinci Airports
    Full Stack Developer
    February 2024 - February 2025 (1 year)
    Development of an AI-driven software
    Development of a versatile artificial intelligence platform, designed to optimize business processes, offering personalized productivity tools and ensuring secure management of sensitive company information.

    Development of a data governance application
    Development of a data governance application essential for VINCI Airports' operations, enabling data collection across its various entities through file ingestion, generation of key performance indicators (KPIs), and interactive visualization of data traceability.
    React Fast API Docker
  • Groupe Clarins
    Full Stack Developer
    July 2024 - December 2024 (5 months)
    France
    Creation of a multifunctional AI-based software platform
    Design of a versatile artificial intelligence software suite, integrating advanced generative AI tools, intelligent data processing, automation capabilities, as well as secure and personalized interfaces, optimized for various professional applications.
  • European Digital Group
    Full Stack Developer
    March 2024 - July 2024 (4 months)
    France
    Development of an AI-based software solution
    Development of a complete software ecosystem powered by artificial intelligence, designed to optimize employee performance and streamline workflows.

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Education

  • Bachelor of Science in Computer Science
    Reichman University (IDC Herzliya)
    2020
    Bachelor of Applied Science - BASc, Computer Science

Skill set

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