Lead Data Scientist
Christy Media Solutions
Aylesbury, United Kingdom
20 days ago
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Experience level
Senior Compensation
£ 100KJob location
Aylesbury, United Kingdom
Tech stack
Artificial Intelligence
Airflow
Python
Machine Learning
TensorFlow
SQL Databases
Reinforcement Learning
Google Cloud Platform
Deep Learning
PySpark
Video Streaming
Job description
We're hiring a Lead Data Scientist to shape how millions of users discover content on a large-scale video streaming platform.
You'll lead the development of recommendation and personalisation models, working closely with engineers, product managers, and fellow data scientists across international teams. This is a hands-on role covering everything from feature creation and experimentation through to production deployment - with opportunities to work on foundation models and reinforcement learning.
What You'll Do
- Lead and evolve recommendation and personalisation models
- Develop and deploy ML solutions at scale (real-time and batch)
- Work with deep learning, graph-based methods, and GenAI technologies
- Partner cross-functionally to turn complex data into real product impact
- Influence technical direction and mentor other data scientists
Requirements
- 5+ years' experience in machine learning or applied data science
- Deep learning expertise (TensorFlow), plus Python, SQL, and PySpark
- Experience deploying ML on Google Cloud Platform (Vertex AI, Kubeflow, Airflow)
- Advanced degree in a quantitative field (or equivalent experience)
Benefits & conditions
- Massive scale & real impact - your work directly shapes user experience
- Modern ML challenges - from deep learning to GenAI and reinforcement learning
- End-to-end ownership - see models go from idea to production
- Smart, collaborative teams - work with experts across data, engineering, and product
- Room to lead - influence strategy, tools, and how data science is done