Senior Data Scientist — Fintech Transformers & End-to-End ML

Klarna is seeking a talented individual to tackle technically interesting modelling problems in fintech. You will train large transformer-based models using real-world data, design tokenisation schemes, and manage the entire model lifecycle.

The ideal candidate will possess a deep understanding of transformer architectures, hands-on experience with Python and PyTorch, and thrive in a small, high-ownership team. If you have a background in ML infrastructure or large-scale financial data, you will stand out in this role.