Senior Data Scientist
At a glance
Senior Data Science role at Quantum. London · full-time · no salary stated · we estimate £105,000–£112,500.
Quantum has not published a salary for this role. The figure below is our estimate, not theirs.
dataroles summary, based on the employer's posting.
What you'll do
- Build and maintain the data pipelines and algorithms behind tailored reporting, owning how the models perform
- Run experiments that test hypotheses and improve forecasting
- Choose and assess statistical or machine learning approaches for each problem
- Turn model results into clear reports on how customers and clients interact with the business
- Work with the analytics team to raise modelling standards and challenge AI outputs
What you bring
- You have several years of experience putting statistical and machine learning models into production
- You are fluent in Python and SQL and can manage model infrastructure end to end
- You can design experiments, select models and judge their performance rigorously
- You can explain complex modelling through clear reporting that non-technical stakeholders can use
Who this fits
This senior role suits someone who combines hands-on production modelling with clear communication and collaborative work. You’ll work in a hybrid setup with three office days each week in London.
From the employer
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.
In this role you will own the models that drive our forecasting and strategy, from the data infrastructure behind them to the experiments that prove them out, turning statistical and machine learning work into reporting the business actually acts on.
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
What’s the next step?
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.
If you like the sound of what we're all about at Quantum and want to join a team where you can make an impact, please apply or contact us at careers@quantum.media.
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