Principal Product Designer in London

As a Principal Product Designer in Loyalty & Customer Engagement, you will shape and deliver the design vision for experiences that help customers understand, access, and make the most of our brand's loyalty benefits and propositions. Working within either John Lewis or Waitrose, you will lead design across the end-to-end loyalty experience, ensuring it connects seamlessly with the core shopping journey. As an expert practitioner and senior individual contributor, you will turn complex, ambiguous challenges into clear opportunities, compelling concepts, and high-quality experiences, guiding work from discovery through to delivery and continuous improvement.

Expected Salary: Salary up to £80,000, depending on experience

Contract type: Permanent

Location: London Pimlico Head Office

Working pattern/flexible working: The Partnership has adopted a hybrid working approach, meaning you'll be able to work flexibly between the office and home based upon the needs of the business. The team aims for around 2-3 days a week in the office to connect and on a more ad-hoc basis to attend key meetings. Core days will vary. There will be an expectation to travel to our Bracknell Head Office 1-2 times a month.

Key Responsibilities:

• Setting the design vision for loyalty and customer engagement, aligning customer needs, brand direction, and business priorities across relevant product teams.
• Leading complex design challenges to create coherent experiences that help customers discover, understand, and use loyalty benefits.
• Shaping discovery with Product and UX Research, using evidence to challenge assumptions, identify opportunities, and evaluate solutions.
• Delivering hands-on design from journey maps and concepts through to prototypes and detailed interfaces.
• Translating long-term vision into achievable improvements alongside Product and Engineering, balancing customer value, technical constraints, and commercial priorities.
• Partnering with the brand's Design capability to evolve reusable design patterns and improve consistency across loyalty and shopping experiences.
• Aligning stakeholders and coordinating design work across teams through clear storytelling, facilitation, and explicit decisions on priorities and trade-offs.
• Mentoring designers, leading constructive critiques, and sharing learnings to strengthen design craft and practice.
• Using research and performance data to assess and improve benefit understanding, task completion, reward uptake, and engagement.

Essential skills/experience you’ll need:

• Design Leadership: Proven experience leading design direction across multiple teams and complex initiatives within a large organisation.
• Expert Portfolio: Evidence of end-to-end product design craft, from early discovery and strategy to delivered interfaces and measurable outcomes.
• Technical Expertise: Deep knowledge of interaction/visual design for web and mobile, including systems and service design thinking.
• Inclusive Design: Practical expertise in utilising design systems and delivering accessible experiences.
• Stakeholder Alignment: Strong storytelling, facilitation, and influencing skills to balance customer, commercial, and technical needs.
• Mentorship: A proven track record of mentoring other designers and elevating design practice.

Desirable skills/experience you may have:

• Domain Knowledge: Experience designing loyalty, rewards, membership, personalisation, or customer engagement propositions.
• Retail/Ecommerce: Experience in the retail sector, specifically connecting digital and in-store customer journeys.
• Data-Driven: Experience using behavioural data and experimentation to improve experiences.
• In-Store & Motion Design: Experience designing in-store digital products or using motion design to enhance interactions.

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.

At the John Lewis Partnership we’re not just employees; we’re co-owners, and that’s why we’re called Partners. Being a Partner means not only do we all collectively share the responsibilities of being the UK’s largest employee-owned business, but we also share in its rewards and successes. It’s this ownership model that makes the Partnership a very unique place to work.