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Ludwig Hagen LetzigLH

Ludwig Hagen Letzig

Data Scientist and Machine Learning Engineer

€300/day
Berlin, DE
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ludwig Hagen

I am available for new projects starting October 13, 2025, after completing my internship.

I am a competent and ambitious Master's student in Data Science & AI, nearing the completion of my studies. I am always eager to learn, open to new ways of thinking and approaches, while always maintaining a critical perspective. I always approach new tasks with initiative and interest.

With two completed and one ongoing internship in various application areas, I already have some experience with practical Machine Learning, Deep Learning, and Data Science. My strengths lie in the systematic analysis and visualization of complex datasets, as well as the implementation and adaptation of various Machine Learning algorithms for problems such as clustering and classification.

Upon completion of my studies, I am looking for short-term employment over the winter to finance long-term travel next year, before continuing my academic career with a PhD.
  • German

    Native or bilingual

  • English

    Fluent

  • French

    Basic

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

Experience

  • Volkswagen AG
    Data Science Intern
    AUTOMOBILE
    April 2025 - Today (1 year and 2 months)
    Braunschweig, Germany
    As part of the Center of Excellence, the Test and Experimentation department plans and conducts battery tests.
    In my team, we analyze fleet data from the Volkswagen fleet to design better, more suitable battery tests.
    My tasks involve Python-based data analysis. On one hand, I developed a score and a corresponding algorithm to evaluate battery aging based on this data. On the other hand, I implement, test, and compare methods to cluster the fleet data into user groups.
    The internship ends on October 10, 2025.
    Python Statistical Modeling Clustering Algorithms Pandas
  • Inria
    Data Science Research Intern
    PUBLIC SECTOR
    May 2024 - July 2024 (2 months)
    Antibes, France
    During my research internship at the French national research institute INRIA, I independently conducted a research project. Here, I investigated possibilities to transfer the concept of RAG (Retrieval Augmented Generation) to classification problems, i.e., to improve classification algorithms with potentially online retrieved information.
    Large Language Models Classification RAG Deep Learning Python
  • data experts gmbh
    Deep Learning Intern
    SOFTWARE PUBLISHING
    March 2023 - September 2023 (6 months)
    Neubrandenburg, Germany
    Data experts gmbh is a software development company with several branches in Germany, particularly in Neubrandenburg, Mecklenburg-Vorpommern.
    Here, as part of automation efforts for official application processes, I tested various methods for classifying scanned documents.
    My main focus was on implementing multi-modal transformer models for simultaneous processing of text and image data using Python and specifically Pytorch.
    Python Deep Learning Transformers Pytorch

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Education

  • Master of Science - Data Science & Artificial Intelligence
    Université Côte d'Azur
    2025
    Englischsprachiges Masterstudium im Bereich Data Science und Artificial Intelligence mit dem Anwendungsbereich Medizin.
  • Bachelor of Science - Mathematics
    Technische Universität Berlin
    2023
    Studium der Mathematik mit Anwendungsfach Informatik. In der Mathematik habe ich mich auf Wahrscheinlichkeitstheorie und Diskrete Mathematik spezialisiert. Im Anwendungsfach Informatik habe ich mich bereits im Bereich Machine Learning vertieft.

Skill set

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