Senior Data Scientist

Quantum; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Private Health Care (Bupa)

Hybrid Working (3 days in office)

Travel Insurance

Competitive Base Salary

Company Bonus Scheme

Paid for AI Subscription (Claude /Chat

ChatGPT / Gemini

Market-Leading Training Programme

Recognition & Reward Scheme

Annual Company Conference

Regular Happy Hours & Team Lunches

Free Coffee, Drinks & Snacks

Job summary

Quantum is seeking a Senior Data Scientist in London to own model infrastructure and deliver scalable reporting. You will design experiments, validate forecasting methods, and apply the best statistical and machine learning models for business outcomes.

You will translate complex modelling into clear reporting for stakeholders, challenge AI usage, and collaborate in a fast-paced team. Hybrid work, competitive rewards, and ongoing training accompany the role.

Qualifications

• Several years building and shipping statistical and machine learning models in production.
• Ability to own model infrastructure end to end and translate results to business impact.
• Comfort translating complex modelling to clear reporting for non-technical stakeholders.

Responsibilities

• Own the infrastructure and outcomes of our models, building algorithms and pipelines to merge, manage and interrogate data for tailored reporting
• Design and run experiments to test hypotheses and sharpen how we forecast
• Select, build and evaluate the most appropriate statistical and machine learning models for each problem
• Turn model output into clear, decision-ready reporting that shows how customers and clients interact with our business
• Raise the modelling bar across the analytics team, challenging and working alongside AI rather than deferring to it

Skills

Python

SQL

Experiment design

Model development

Team player

Job description

Our Company

At Quantum, we connect global brands with high-intent consumers. We turn intent into action and complexity into clarity.

Our Company

At Quantum, we connect global brands with high-intent consumers. We turn intent into action and complexity into clarity.

Our Mission is clear, to help smarter, faster buying decisions. Our vision, to be the world’s most used digital comparison service, delivering value and simplicity to millions.

We drive growth through data-driven affiliate marketing built for performance from day one. Every campaign is measurable, optimised in real time, and designed to scale.

With in-house tech, full-stack analytics, and a compliance-first mindset, we give our partners an edge. We drive confident decisions and growth in regulated and high-growth sectors. We’ve helped ambitious brands grow faster, smarter, and globally.

The Role

Our Business Analytics team is growing! We’re looking for a Senior Data Scientist to join our team in London.

Key Responsibilities

• Own the infrastructure and outcomes of our models, building algorithms and pipelines to merge, manage and interrogate data for tailored reporting
• Design and run experiments to test hypotheses and sharpen how we forecast
• Select, build and evaluate the most appropriate statistical and machine learning models for each problem
• Turn model output into clear, decision-ready reporting that shows how customers and clients interact with our business
• Raise the modelling bar across the analytics team, challenging and working alongside AI rather than deferring to it

About You

• Several years building and shipping statistical and machine learning models in production, ideally in a commercial or performance-driven setting
• Fluent in Python and SQL, and comfortable owning model infrastructure end to end
• Strong on experiment design and model selection, and honest about how to evaluate what actually works
• Able to translate complex modelling into clear reporting that non-technical stakeholders can act on
• You challenge AI rather than lean on it, using it to move faster without losing rigour
• You thrive when working as part of a team
• Comfortable in a fast-paced environment
• Have excellent written and verbal English skills
• Last but not least, you’ll have no ego!

What You’ll Get

• Private Health Care (Bupa)
• Hybrid Working (3 days in office)
• Travel Insurance
• Competitive Base Salary
• Company Bonus Scheme
• Paid for AI Subscription (Claude / ChatGPT / Gemini)
• Market-Leading Training Programme
• Recognition & Reward Scheme
• Annual Company Conference
• Regular Happy Hours & Team Lunches
• Free Coffee, Drinks & Snacks

Our hiring process ensures we're recruiting the right people for the role. We ensure that people are as suitable for us as we are for them.