Job Description
Lead Data ScientistLocation: Midlands based HQ with weekly on-site presenceSalary: Up to £75,000 plus competitive bonus and benefits
A large UK consumer eCommerce business is scaling a new internal advertising and monetisation platform and is hiring a Lead Data Scientist to take technical ownership of its core algorithms. This is a technical leadership role with end-to-end ownership of the algorithm roadmap. You will set direction, make architectural decisions, and lead delivery from experimentation through to production in a high-scale environment.
What you will do
* Own the technical and algorithm roadmap for a large-scale internal ads platform.
* Design, test and deploy advanced predictive and ranking models such as Two-Tower architectures, RNNs and learning-to-rank approaches.
* Lead architecture, model selection and production design decisions.
* Improve feedback loops to increase responsiveness to real-world events and outcomes.
* Set best practices for production ML, testing, monitoring and deployment.
* Act as the technical authority for data science across the ads domain.
* Work closely with engineering, product and commercial teams.
* Present outcomes and recommendations to senior stakeholders in clear business terms.
What you bring
* Strong background in data science applied to personalisation, recommendations or ranking problems.
* Proven experience owning and delivering production machine learning systems.
* Advanced hands-on experience with PyTorch or TensorFlow.
* Strong Python and SQL skills with experience in distributed processing such as PySpark.
* Comfortable making technical trade-offs in complex, ambiguous environments.
* Able to translate complex technical work into commercial impact.
Nice to have
* Experience in AdTech or monetisation systems.
* Familiarity with MLflow, Databricks and modern DevOps tooling.
* Experience working in large-scale consumer or eCommerce environments.
Working style and benefits
* Weekly on-site presence with flexible working.
* Competitive base salary with annual performance bonus
* Sharesave scheme.
* Private medical insurance.
* Pension contribution.
* 25 days holiday plus bank holidays with buy and sell options.
* Staff discounts.
* Subsidised food and on-site facilities.
* Gym discounts.
* Digital GP service and wellbeing support.
Why join
You will be joining a business operating at national and international scale, investing heavily in applied machine learning that directly impacts revenue. This is not a research role. Your work will be put into production, used at scale, and you will be accountable for its impact.