Klarna is seeking a Senior/Lead Data Scientist for Credit in London. You will tackle technically challenging fintech modelling problems, training large transformer-based models on long transaction sequences, and design tokenisation schemes for complex features.
You will own the full model lifecycle from data preparation to production, shaping how ML runs across Klarna. You will join a small, high-ownership team with real product impact, working in Python with PyTorch, SageMaker and Airflow to