Our partner is looking for a Senior Data Scientist (m/f/d) based in Spain. This role offers the opportunity to build and improve machine-learning products operating at exceptional scale within the digital advertising ecosystem.
You will work with large, complex datasets and models processing billions of ad requests and users in real time.
The position spans the full data science lifecycle, from research and experimentation through production deployment and continuous optimization.
You will collaborate closely with data scientists, analysts, and machine learning engineers to develop scalable solutions with measurable business impact. Your work will directly contribute to improving product performance, customer outcomes, and the efficiency of programmatic advertising systems. The environment is international, highly collaborative, experimentation-driven, and focused on solving complex problems with practical machine learning.
This is an opportunity for an experienced data scientist to work on challenging problems while having meaningful technical and commercial impact.



AccountabilitiesDevelop, improve, and maintain machine-learning models used within large-scale programmatic advertising systems. Enhance existing models by introducing new features, tuning parameters, and incorporating additional data sources.
Collaborate with Machine Learning Engineers to research, develop, and deploy scalable supervised and unsupervised learning algorithms.
Explore new and existing data sources to identify opportunities for improving models and product performance. Research and evaluate machine-learning approaches that can optimize different stages of the business and technology value chain.
Design, run, and analyze A/B tests to validate hypotheses, measure impact, and guide product and modeling decisions.
Develop solutions capable of handling sparse, large-scale datasets for prediction, clustering, outlier detection, and related use cases.
Contribute to neural-network-based products

📌 Senior Data Scientist (Madrid)
🏢 Jobgether
📍 Madrid