SENIOR PRODUCT DESIGNER • MOBILE APP • 2024 - 2026

Cazoo Mobile App

OVERVIEW

Cazoo is a UK-based digital marketplace for buying used cars, combining large-scale inventory, transparent pricing, and mobile-first design to simplify the car-buying journey.

I led product design within a cross-functional product teams alongside senior engineers and PMs focused on improving discovery, engagement, and conversion across the Cazoo mobile app. My work at Cazoo spanned across the entire app from end-to-end on key areas such as Onboarding, Home search journey, Search Results Page (SRP) and Vehicle Information Page (VIP).

THE PROBLEM

When I joined Cazoo, I was tasked with designing and evolving a used car marketplace experience that could support users in navigating a large and complex inventory.

The vehicle discovery journey presented several usability challenges, particularly across search, filtering, and evaluation. Users needed to efficiently find relevant cars, understand key information, and confidently progress through each journey.

OUTCOMES

1M+

App store installs across iOS & Android

4.8/5

★ App / Google Store Rating

350K+

Monthly user sessions

36K+

Month-on-month increase in Leads

  • Positioned as a major challenger to Auto Trader in the UK market

  • Built on a network of 270,000+ dealer listings (MOTORS ecosystem)

PRODUCT SQUAD

  • Product Design Lead (Me)

  • UX Researcher

  • Product Manager

  • Tech Lead

  • Senior React Native Engineers (5)

  • Quality Assurance

BUSINESS OPPORTUNITY

  • Opportunity to increase engagement, retention, and conversion across the vehicle discovery journey

  • Reduce friction and improve clarity within high-traffic areas such as search and vehicle detail pages

  • Enable users to effectively navigate large inventories and progress toward purchase decisions

  • Strengthen overall product quality, usability, and trust in the platform

Home

The Home screen acts as the primary entry point into the product, designed to quickly capture user intent and guide them into the vehicle discovery journey.

I focused on creating a streamlined and intuitive experience that enables users to start searching with minimal friction, while also supporting re-engagement through personalised and contextual content such as recently viewed vehicles.

BUSINESS OPPORTUNITY

  • Increase search initiation rates (Home → SRP progression)

  • Support both high-intent (search-driven) and low-intent (browse-driven) users

HYPOTHESIS

  • Simplifying search inputs (make + model) would increase search initiation rates

  • Prominent call-to-action (“Search cars”) would drive faster progression into SRP

  • Category shortcuts (e.g. SUV, Hatchback) would support users with lower intent or browsing behaviour

MEASURES OF SUCCESS

  • Increased search initiation rate from Home

  • Higher click-through rate to Search Results Page (SRP)

  • Increased interaction with category shortcuts (e.g. SUV, Hatchback)

GOAL

  • Enable users to quickly initiate a search and enter the discovery journey

  • Reduce friction in early-stage exploration

  • Support re-engagement through personalised and relevant content

Search Results Page (SRP)

The Search Results Page (SRP) was a critical touchpoint within the vehicle discovery journey, serving as the primary interface for users to browse, compare, and refine large inventories of available cars. I focused on designing a scalable and intuitive browsing experience that balanced high information density with clarity, enabling users to quickly evaluate listings while maintaining context around their search criteria.

The experience introduced structured filtering, clear pricing visibility (including monthly finance), and scannable listing cards to support faster decision-making across thousands of results.

BUSINESS OPPORTUNITY

  • Improve engagement across high-intent browsing sessions

  • Support conversion by surfacing key decision-making factors earlier (price, finance, trust signals)

  • Enable users to navigate large inventories more efficiently, reducing drop-off

GOAL

  • Enable users to efficiently browse and evaluate large volumes of vehicle listings

  • Improve clarity and scannability of key information (price, specs, dealer trust signals)

  • Support seamless refinement through filtering and sorting

HYPOTHESIS

  • Improving the visual hierarchy and structure of listing cards would increase engagement with individual vehicles

  • Clear metadata (mileage, fuel type, transmission, distance) would accelerate comparison and reduce cognitive load

MEASURES OF SUCCESS

  • Increased click-through rate (CTR) from SRP to VIP

  • Higher interaction with filtering and sorting controls

01 ) Modular Header Component Design

The header was designed as a modular component that adapts to user context and applied filters. This ensures consistency while enabling flexible, scalable states across the search experience.

Standard Header

Default state providing quick access to sorting and filtering, supporting efficient browsing at scale.

Filter Selection

Displays active filters, giving users clear visibility and easy control over their selections.

Pre-set Filters

Surfaces popular or suggested filters to help users quickly refine results with minimal effort.

The filtering system was designed as a full-screen experience to support deeper refinement across large inventories. It enables users to efficiently narrow down results using multiple criteria, improving clarity, control, and overall decision-making within the browsing journey.

02) Filtering System (Expanded)

All Filters

A full-screen filter hub that allows users to refine results across multiple criteria in one place.

Filters - Select Model

A focused selection view enabling users to search and multi-select specific models with clear feedback.

Filters - Select Body Type

A simplified selection state for choosing vehicle types, supporting quick comparison and multi-selection.

The filtering system was also designed as a lightweight bottom sheet to enable quick, in-context refinements without disrupting the browsing experience. It allows users to adjust key criteria efficiently while maintaining continuity within the results view.

03) Filtering System (Minimised)

Sheet - Select Make

A lightweight bottom sheet allowing users to quickly search and select vehicle makes without leaving the results view.

Sheet - Select Model

A contextual sheet for selecting models based on chosen makes, supporting quick multi-selection and refinement.

Sheet - Price

A focused sheet for setting price ranges, enabling fast adjustments between cash and monthly preferences.

Vehicle Information Page (VIP)

The Vehicle Information Page (VIP) serves as a high-intent decision-making touchpoint, where users transition from browsing to evaluating a specific vehicle in detail. I focused on designing a clear, trustworthy, and conversion-optimised experience that surfaces key information upfront while supporting deeper exploration when needed.

BUSINESS OPPORTUNITY

  • Increase conversion from vehicle views to dealer contact (Message / Call)

  • Improve user confidence through transparency and trust signals

  • Support monetisation through finance visibility and “Apply now” pathways

  • Reduce drop-off at a critical decision-making stage

GOAL

  • Enable users to confidently evaluate a vehicle and progress toward action

  • Surface key decision-making information clearly and efficiently

  • Reduce friction between interest and conversion (contacting dealer / applying)

HYPOTHESIS

  • Prioritising pricing (cash + monthly finance) would increase conversion intent

  • Elevating trust signals (dealer rating, reviews, history check) would reduce hesitation

  • Structuring specifications into scannable sections would improve comprehension

  • Prominent and persistent CTAs (Message, Call) would increase user action rates

  • High-quality imagery would improve emotional engagement and perceived value

MEASURES OF SUCCESS

  • Higher conversion rate from VIP → lead generation

  • Increased engagement with primary CTAs (Message, Call, Apply now)

Design System

Alongside feature development, I helped to establish a scalable and evolving mobile design system to support consistency, speed, and quality across the entire product. As the marketplace experience expanded across multiple surfaces (Home, Search, SRP, VIP), it became critical to establish a unified set of components and patterns that could be reused and adapted efficiently.

I worked closely with engineering to ensure components were aligned with React Native implementation, enabling a shared language between design and development using Design Tokens. 

DESIGN TOKENS

  • Established a consistent set of design tokens across colour, typography, spacing, and elevation to ensure visual cohesion across the app

  • Defined semantic colour usage (e.g. primary actions, success states, pricing emphasis, trust indicators) to improve clarity and accessibility

  • Standardised typography scales to support clear hierarchy across dense information surfaces such as SRP and VIP

ATOMIC PRINCIPLES

  • Adopted an atomic design approach to structure the system into reusable building blocks (atoms, molecules, organisms)

  • Built foundational components such as buttons, icons, tags, and inputs to ensure consistency across interactions

  • Composed more complex components such as listing cards, filter modules, and pricing blocks from these foundational elements

Reflections

SUCCESS & LEARNINGS

  • Successfully contributed to the evolution of a large-scale mobile marketplace, improving key journeys across discovery, evaluation, and conversion

  • Strengthened my ability to design for complex, high-density information environments, balancing usability with business needs

  • Deepened my understanding of retention and behaviour-driven design, particularly how small UX improvements can influence engagement at scale

This work reinforced the importance of designing beyond individual screens and thinking in terms of end-to-end product journeys and systems. It highlighted how effective product design sits at the intersection of user needs, business goals, and technical constraints.

Moving forward, I would look to deepen measurement of impact through closer alignment with data, enabling more direct connections between design decisions and commercial outcomes.

Don’t just take my word for it…

“Very impressed, excellent selection, very easy to use.”

TrustPilot Review

“Really easy service platform to use and navigate. I found looking for my ideal car easier than actually going to the showroom.”

TrustPilot Review