Salary: Competitive with Excellent Benefits Package
At Tesco Mobile, we're passionate about connecting people—and data is at the heart of everything we do.
We're looking for a
Senior Data Scientist
to join our team and help shape smarter, more personalised experiences for our customers.
If you enjoy solving complex problems, building scalable models, and seeing your work drive real-world outcomes, this could be the perfect next step for you and we'd love to meet you.
Why Join Us?
Work on
high-impact projects
that influence real business outcomes
Be part of a collaborative, forward-thinking team
Combine deep technical work with real-world application
Grow your expertise in a supportive and innovative environment
This role can be based in
Welwyn Garden City or our Slough
office with occasional travel required.
Team collaboration is key—you'll attend a
fortnightly team meeting
(typically in Slough or London)
We embrace hybrid working, with
a minimum of 2 days per week in the office
You will be responsible for
In this hands-on role, you'll work on both
static and time series data (including propensity models and forecasting models)
, developing innovative models that enhance customer experiences and drive business performance.
From
personalised communications
and
marketing optimisation
to
customer lifetime value, churn reduction, and demand forecasting
, your work will directly influence key decisions.
You won't just build models—you'll
bring them to life
, owning the journey from concept to deployment and beyond.
Own end-to-end delivery of data science solutions—from problem framing, feature engineering, monitoring, evaluation and deployment
Design and execute hypothesis-driven analysis and statistical testing (e.g., experiment design where applicable, assumption checking, uncertainty quantification) and translate results into clear business recommendations
Build and productionise propensity models to support targeting,



next-best-action and other decisioning use cases
Build and productionise time series forecasting models for demand and stock perspectives; perform back-testing and continuously improve forecast accuracy
Partner with stakeholders to define success metrics and deliver meaningful outcomes
Build, validate and optimise robust data pipelines and model code (testing, performance, reproducibility, documentation and security considerations)
Contribute to team growth through knowledge sharing, mentoring, and best practice
You will need
We're looking for someone who is both technically strong and commercially minded, with the ability to translate data into impact.
Demonstrated ability to solve ambiguous problems and deliver
end-to-end analytical solutions
Strong grounding in
applied statistics
(hypothesis testing, experiment design, uncertainty analysis)
Proven experience with
both static and time series modelling
Advanced skills in
Python, SQL, and PySpark
, with a focus on clean, testable, reproducible code
Experience deploying models in
cloud environments
(Azure preferred), including CI/CD and monitoring
Strong communication skills—able to simplify complex ideas for non-technical audiences
PhD or Masters Degree
You'll stand out if you also have:
Experience with tools such as
MLflow, PyTorch, Databricks, or graph databases
A passion for continuous improvement and sharing knowledge
A collaborative mindset with excellent stakeholder engagement skills
What's in it for you
We're all about the little helps.




That's why we make sure our Tesco colleague benefits package takes care of you – both in and out of work.
Annual premio scheme of up to 20% of base salary
Holiday starting at 25 days plus a personal day (plus Bank holidays)
Private medical insurance
26 weeks maternity and adoption leave (12 months service required at the qualifying date) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave
Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing
The above information is a shortened summary, refer to our policies for full details
About us
Tesco has become a market leader by doing the little things that really matter for our customers and colleagues.
It's part of what makes Tesco such a great place to work, and we're proud to have been accredited as one of Britain's Top Employers again this year.
We're the UK's number one retailer and we pride ourselves on offering a great shopping experience.
We are passionate about our food, merchandise and services and will always try to get things right for our customers.
But did you know we also offer great job opportunities?
With stores, distribution centres and offices across the UK, and a vast variety of roles, we are always looking for people who have a hunger to work with customers and colleagues across our exciting business.
We believe in treating each other with respect and giving everyone an equal opportunity to get on.
It's our people that make the difference every day - helping us make a difference for our customers
Should you be successful in your application, your offer will be subject to and conditional upon you providing your bank account details before your agreed start date.
For more information about us please visit
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📌 Senior Data Scientist (Tesco Mobile) (Montà)
🏢 Allscreens Nationwide
📍 Montà