Online Trading Experimentation Analyst

About the roleAs an experimentation analyst, you will drive data-informed decisions through rigorous analysis of website and app experiments. You will delve into experiment data to extract key insights, producing clear reports and actionable recommendations that guide optimisation efforts. You will also partner with optimisation specialists and cross-functional teams to ensure accurate measurement and interpretation of experiment results.

Beyond individual experiments, you will also identify overarching trends within our experimentation programme to drive continuous improvement of our methodologies and ways of working. You will contribute to fostering an experimentation culture by providing consultancy and training on A/B testing and personalisation to wider Waitrose teams.

• Salary - £51,000.00 - £75,000.00

• Contract type - This position is a permanent contract.

• Working pattern/flexible working - The Partnership has adopted a hybrid working approach, meaning you'll be able to work a mixture between the office and home based upon your personal needs whilst balancing the needs of the business.

• The experimentation team aims for around one to two days a week in the office to connect and on a more ad-hoc basis to attend key meetings.

• Location - our head office is located in Bracknell.

• Interview Dates - week commencing 29/09/25 with interviews being conducted virtually.

Key Responsibilities

• Implement tracking and tagging requirements to accurately capture experiment data using web analytics and experimentation platforms

• Monitor ongoing experiments, ensuring data integrity and identifying any potential issues or anomalies

• Conduct in-depth analysis of individual experiment results, leveraging statistical methods to determine significance and identify key trends

• Create detailed reports that clearly communicate experiment findings, key learnings, and recommendations to stakeholders

• Collaborate with the optimisation specialists to translate data findings and meta-analysis insights into actionable hypotheses and future experiment ideas

• Design, develop, and maintain interactive Tableau dashboards to visualise experiment performance, key metrics, and overall programme trends for various stakeholders

• Perform meta-analysis of the experimentation programme to identify overarching trends, successful patterns, and areas for strategic improvement

• Contribute to the documentation of experiment processes, met

• hodologies, and results

• Support the team in fostering a data-driven culture by providing clear and understandable data insights and program-level summaries.

• Upskilling and inspiring digital teams on experimentation and personalisation

• Stay up-to-date with industry trends, events, tools and techniques

Essential skills/experience you’ll need

• Bachelor's degree in a quantitative field such as Statistics, Mathematics, Economics, Computer Science, or a related discipline

• Strong understanding of statistical principles and their application to A/B testing and data analysis

• Proficiency in using web analytics tools (e.g., Google Analytics, Adobe Analytics) for data extraction, manipulation, and reporting

• Proficiency in SQL for manipulating data including navigating data warehouses, retrieving/transforming data and query optimisation

• Functional understanding/experience with GTM (or other TMS platform)

• Proven expertise in designing and developing interactive and insightful dashboards using Tableau

• Strong communication and prioritisation skills with the ability to translate business requirements into technical designs/specifications

• Appreciation of robust delivery processes: wireframing, documentation, proactive risk/dependency management etc

Desirable skills/experience you may have 

• Working knowledge of Monetate and/or Firebase

• Grocery retail experience

• Python experience/foundational skills

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#LI-REMOTE About The Partnership

We’re the largest employee owned business in the UK and home of our cherished brands, John Lewis and Waitrose. We’re not just employees, we’re Partners, driven by our purpose to build a happier world. As we look to our future, there’s never been a more exciting time to join us.  

We’re ruthlessly focused on being brilliant at retail. We continue to innovate, adapt and diversify. Never Knowingly Undersold on price, quality and service in John Lewis and passionately serving food-lovers in Waitrose.   

As Partners we all share the responsibility of ownership and in its rewards. We use our voices to contribute to our success, working together through the good and challenging times, holding true to our behaviours and treating everyone with kindness and respect. 

We all own making the Partnership somewhere we belong. Embracing our differences and creating an environment where we’re free to be ourselves and can THRIVE. Growing ourselves individually, and as a collective. 

As Partners, we make all the difference. And, we all own it.  

Important points to note:  

It’s important to note that some of our roles are subject to pre-employment vetting (which may include DBS checks for successful candidates). If required, you’ll be informed and provided with information about vetting during the recruitment process and we encourage you to complete any vetting documents quickly to avoid delays. Any DBS checks required will be carried out by a third-party registered body and financial probity checks may also be required for some of our roles.  

We also recommend that you apply as soon as possible as vacancies can close early if we see a high number of applicants.  

We want all of our Partners to have a good work-life balance and we support flexible working. This might mean flexible or compressed hours, job sharing or shorter hour contracts, where possible. Please discuss this further with the hiring manager during your interview.