Senior Machine Learning Engineer

Machine Learning Scientist UK | Remote | Outside | 3 - 6 months A leading global marketplace is looking for a Machine Learning Scientist to help shape how millions of people discover and interact with products every day. You’ll join a collaborative team focused on applying cutting-edge ML techniques to solve large-scale ranking and recommendation challenges. What you’ll do • Design and build machine learning models that improve personalisation and search relevance • Run large-scale experiments to validate ideas and guide product direction • Partner with teams across engineering, product, and data to translate business needs into scalable ML solutions • Stay up to date with new ML research and apply emerging methods across NLP, vision, and recommendation systems • Present findings clearly to both technical and non-technical audiences What you’ll bring • Experience as a Machine Learning Scientist or similar, delivering models into production • Strong understanding of ML concepts and experience with frameworks such as PyTorch, TensorFlow, or Transformers • Proficiency in Python and a good grasp of MLOps and data engineering practices • Collaborative mindset and comfort working in cross-functional teams • Curiosity and eagerness to learn new techniques Nice to have • Experience with learning-to-rank or recommendation systems • Knowledge of deep learning or large language models • Familiarity with A/B testing, Databricks, PySpark, or AWS