Senior Data Scientist (Tesco Mobile)

Allscreens Nationwide Ltd; None; Ibrido; EUR 105.000 - 140.000; Tempo pieno

Vantaggi offerti da questo lavoro

Annual bonus up to 20%

Private medical insurance

25 days holiday + personal day

Descrizione del lavoro

Tesco Mobile is seeking a Senior Data Scientist to shape smarter, more personalised experiences for customers. You will own end-to-end data science solutions, including propensity modelling, forecasting, and deployment in cloud environments.

The role requires strong Python/SQL/PySpark skills, experience with static and time-series modelling, and the ability to translate data into business impact. Hybrid work with 2 days in the office is supported.

Competenze

• PhD or Masters in a quantitative field.
• Strong grounding in applied statistics and hypothesis testing.
• Proven experience with both static and time series modelling.
• Advanced coding skills in Python, SQL and PySpark; clean, testable code.
• Experience deploying models in cloud environments (Azure) with CI/CD.

Mansioni

• Own end-to-end delivery of data science solutions from problem framing to deployment.
• Build and productionise propensity and forecasting models for customer insights and business impact.
• Design hypothesis-driven analyses and translate results into actionable recommendations.
• Collaborate with stakeholders to define success metrics and monitor model performance.
• Mentor teammates and contribute to best practices in data science.

Conoscenze

Python

SQL

PySpark

Statistics

Experiment design

Communication

Formazione

PhD or Masters

Strumenti

MLflow

Databricks

CI/CD

Azure

Monitoring

Graph databases

Descrizione del lavoro

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 bonus 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 www.tescoplc.com