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Sebastien NguyenSN

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Freelancer profile translated to English.
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About Sebastien

Graduated with a Master's degree specializing in Artificial Intelligence, I develop AI/Data and web development solutions, with a strong analytical and problem-solving capacity. Agile and adaptable, I collaborate effectively in a team and can clearly explain technical results.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • Devoteam
    AI Research Engineer Intern
    July 2025 - December 2025 (5 months)
    92300 Levallois-Perret, France
    Design of a GenAI agent translating natural language queries into GraphQL queries for interrogating cloud pricing APIs (Infracost – AWS, Azure) and generating cloud architecture. Orchestration of reasoning and tool calls with LangChain and LangGraph, multi-model support (GPT, Gemini, open-source models via NVIDIA NIM) and traceability ensured with LangSmith
    Langchain external-api-integration LLM Python Research
  • THALES
    Development Engineer Intern
    April 2024 - August 2024 (4 months)
    92230 Gennevilliers, France
    Development of a security gateway for a military naval communication system, handling HTTP requests (GET, POST) in XML format exchanged between servers. Manual tests performed with Postman to verify XML message compliance and proper server transaction flow. Implementation of cybersecurity mechanisms with Apache and Nginx, and gateway development in Python/Flask.
    Python Nginx Cybersecurity Apache Servers

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Education

  • Double Degree MSc
    SKEMA Business School
    2025
    Double diplôme MSc
  • Computer Engineering Degree - CTI
    ESIEA
    2025
    Diplôme Ingénieur Informatique- CTI

Skill set

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