About CHECK24\n\nCHECK24 is the comparison portal: We are the market leader and a dynamic startup in one. With over 20 million customers, state-of-the-art technology, and data-driven decisions, we shape the future of online comparison every day. In the Internet tariff comparison sector, we offer up-to-date DSL, cable, fiber optic, and 5G offers from over 350 providers -- and rely heavily on Machine Learning & Data Science to deliver the best possible user experience to our customers.\n\nBecome part of our Data Science & BI team at CHECK24 Vergleichsportal Telekommunikationsdienste GmbH as a (Junior) Data Scientist (m/f/d) and contribute your ideas to exciting projects: from ranking and recommendation systems to fraud detection models and innovative operator use cases with AI.\n\n### Your Responsibilities\n\n* Design & Develop: You will build machine learning models for ranking, recommendation, fraud detection, and operator use cases -- from data preparation and training to integration into the product.\n* Experiment & Optimize: You will manage your training with modern MLOps frameworks (MLflow, etc.) and take our models to the next level.\n* End-to-End Responsibility: You will accompany your models until go-live and work closely with developers, analysts, and product managers.\n* Drive Innovation: You will identify new AI approaches, from NLP to generative AI (e.g., Transformers, LLMs like ChatGPT) -- and examine how we can translate them into real product features.\n\n### Your Qualifications\n\n* A very well-completed degree in Mathematics, Physics, Statistics, Computer Science, Electrical Engineering, or a comparable field of study.\n* Practical experience in developing machine learning services, preferably with initial insights into ranking and recommendation systems and NLP.\n* Sound knowledge of the Python Data Science stack (Pandas, SKLearn, SciPy) as well as experience with deep learning frameworks (Pytorch, Tensorflow).\n* Strong conceptual thinking combined with the ability to solve problems using statistics and machine learning. Always with a clear focus on impact.\n* Motivation for interdisciplinary work between IT and product management and for knowledge exchange within the CHECK24 Data Science Community.\n* Very good English skills, both written and spoken (min. C1); German language skills are an advantage.\n\n### Additional Information\n\nDevelopment and Responsibility\n\n* Your commitment pays off -- we foster your talent and offer you a steep learning curve.\n* Ownership of your topics -- contribute your own ideas, try new things, and take responsibility for real impact.\n* Benefit from internal training by specialized coaches as well as an annual budget for external further education.\n\nTeam Spirit and Modern Workspace\n\n* We live team spirit in everyday work and beyond -- whether during joint lunches, foosball, or after-work gatherings -- and celebrate our successes at regular company and team events.\n* An inspiring environment -- our modern office offers high-quality equipment such as MacBooks and height-adjustable desks.\n\nFlexibility and Balance\n\n* Decide for yourself whether you work from home on Fridays, collect up to 18 additional vacation days per year, or opt for a salary increase instead. This gives you up to 46 days of paid vacation.\n* Reach the office stress-free with your free Deutschlandticket or a subsidized company bicycle.\n* Every day, enjoy free fresh lunch, well-stocked drink refrigerators, as well as fruit, muesli, and snacks -- ideal for exchanging ideas with colleagues.\n* Stay fit with our internal sports courses or use the subsidized external sports offer (including EGYM Wellpass) for the perfect balance.\n\nBenefits: Team Events\n\nRemote Model: Hybrid\n\nCountry Code: de
