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Data Scientist

Confidential company · Cologne · Posted Oct 15, 2026

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Public summary

Join a leading European e-pharmacy to improve product recommendation experiences by analyzing customer and product data using state-of-the-art machine learning. Collaborate cross-functionally to design, develop, test, and implement machine learning models and features in a tech stack including Python, SQL, Spark, and Azure. Work in a flexible, supportive environment offering remote work options, personal development, and generous vacation.

Location and work setup

Location
Cologne
Remote status
Hybrid
German requirement signal
No German Required Detected
Detected job language
English

Responsibilities

Improve webshop and app product recommendations by analyzing customer behavior and product data. Develop and refine recommendation models using machine learning techniques. Partner with product managers, engineers, and domain experts to implement and continuously improve models. Design and analyze A/B tests to evaluate impact, define metrics, and interpret results. Manage full project lifecycle from data exploration to production, monitoring, and iterative enhancement.

Qualifications

Experience in machine learning model development including data preparation, feature engineering, modeling, and evaluation. Strong coding skills in Python and SQL with version control using Git. Knowledge of production model development, reproducible training, and data pipelines. Expertise in experimental design and A/B testing. Solid understanding of recommendation systems and related machine learning methods. Ability to work iteratively in cross-functional teams translating business goals into technical solutions.

Skills

Python SQL Machine Learning Feature Engineering A/B Testing Recommendation Systems Databricks Spark Experimentation Frameworks MLOps Git CI/CD Azure