Skills

Leadership Python SQL DevOps Monitoring Test Research Architecture Machine Learning PyTorch TensorFlow Data Science Databricks PySpark

Job Specifications

Lead Data Scientist
Location: Midlands based HQ with weekly on-site presence
Salary: 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.

About the Company

Specialising in recruitment across the tech, digital, engineering, and government and defence sectors, iO Associates have extensive experience in securing the best talent to create the products and infrastructure of the future. Our dedicated team of highly experienced and knowledgeable consultants provide bespoke solutions, working with businesses to find the perfect fit across contract, interim, search, and permanent appointments. We offer end-to-end support, from Statements of Work and IR35 determination processes to full... Know more