(Junior) Data Scientist - Focus on Large Language Models (LLMs) and Generative AI (GenAI) | (Junior) Data Scientist (m/w/d) – Fokus auf Large Language Models (LLMs) und GenAI Mietwagen

CHECK24 Services Personal GmbH

Augsburg, Bayern, Bayern, Deutschland
Published Dec 15, 2025
Full-time
Permanent

Job Summary

This role involves developing and implementing innovative Generative AI (GenAI) and Large Language Model (LLM) solutions to enhance customer interactions and automate business processes within the market-leading car rental comparison platform. The Data Scientist will be responsible for the end-to-end implementation of AI models, including seamless integration into existing IT systems, collaborating closely with product management and IT teams. Key responsibilities also include monitoring model performance, identifying improvements, and driving scalability using state-of-the-art technologies. The ideal candidate has a strong background in Computer Science or Data Science, practical experience in GenAI/LLM development (e.g., Prompt Engineering, fine-tuning), and proficiency in Python, Git, and Docker. This is an excellent opportunity for a motivated professional to work in an agile E-commerce environment with short decision paths and a focus on continuous innovation.

Required Skills

Education

Very good university degree in Computer Science, Data Science, or a related discipline

Experience

  • First practical experience in developing Generative AI solutions and LLMs (e.g., Prompt Engineering or fine-tuning)
  • Experience integrating AI solutions into existing IT systems via MCP (Model Control Plane, reasonably inferred from context)
  • Professional experience with technical tools including Python, Git, and Docker

Languages

German (Fluent)

Additional

  • Not specified