Lead Data Scientist
4 giorni fa
monza, lombardy, Italia
Klarna
Tempo pieno
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In this role you will tackle technically challenging modelling problems in fintech by training transformer-based models on long sequences of real-world transactional events. You will design tokenisation schemes for numerical, categorical, and temporal features, shaping vocabulary size, sequence length, and information compounding. You’ll oversee the full model lifecycle from data prep to production, translating research decisions into systems that steer ML at Klarna. You join a small, high-ownership team where your work directly impacts Klarna’s products. This is a mission-driven opportunity to shape scalable ML infrastructure in fintech.
Train transformer-based models on long sequences of transactions
Plan and optimize vocabulary size, sequence length, and information compounding
Support end-to-end model lifecycle from data preparation to production serving
Translate research decisions into production systems and ML direction for the company
Deep understanding of transformer architectures and sequence modelling
Experience designing tokenisation for heterogeneous features
Proficiency in Python, PyTorch, SageMaker, and Airflow
Experience owning the full model lifecycle from training to serving in production
Ability to work on open-ended technical problems in a small team
autonomy
problem-solving
tokenisation design for numerical, categorical, and temporal features
#J-18808-Ljbffr
Train transformer-based models on long sequences of transactions
Plan and optimize vocabulary size, sequence length, and information compounding
Support end-to-end model lifecycle from data preparation to production serving
Translate research decisions into production systems and ML direction for the company
Deep understanding of transformer architectures and sequence modelling
Experience designing tokenisation for heterogeneous features
Proficiency in Python, PyTorch, SageMaker, and Airflow
Experience owning the full model lifecycle from training to serving in production
Ability to work on open-ended technical problems in a small team
autonomy
problem-solving
tokenisation design for numerical, categorical, and temporal features
#J-18808-Ljbffr