Senior Software / ML Engineer (Python) (f/m/d)

Galaxus, the leading Swiss online retailer with more than 3,500 staff across Switzerland, Germany and Serbia, is expanding its reach and looking for a senior engineer to help shape the ERP and webshop experience that serves over four million shoppers. The position sits inside a multidisciplinary software and machine‑learning group that builds the backend for the Order Management and Finance sections of the platform. In this role you will join a Scrum‑based development squad focused on order processing and financial flows. Your main tasks involve steering the growth and upkeep of a distributed document‑processing pipeline that classifies files and pulls structured information from PDFs through vision‑language models. You will also own the testing framework that validates scoring algorithms, stay current with emerging large‑language‑model advances, and act as the Python authority among colleagues who primarily code in C#, guiding them toward best practices while gradually contributing across the full technology stack. The ideal candidate holds a computer‑science degree from an institution such as ETH, a