Senior UI Designer, Mobile, B2C, Marketplace | London, Hybrid, UK Remote (Or 1 Day Hybrid from [...]

Owen Thomas | Pending B Corp; Greater London; Hybrid; GBP 70,000 - 85,000; Full time

Job summary

A leading digital marketplace based in the UK is looking for a Senior UI Designer to enhance their design system across web and mobile platforms. The ideal candidate will have proven UI design experience, particularly in e-commerce, and a solid portfolio showcasing their design craft. This role offers a salary of up to £85,000, flexible hybrid working options, and a progressive benefits package to support work-life balance and wellbeing.

Benefits

Private health and mental wellbeing coverage

25 days annual leave

Pension matching

Life insurance

Qualifications

• Proven experience as a UI Designer, Visual Designer, or similar role.
• Strong portfolio showcasing design craft and attention to detail.
• Hands-on experience contributing to a design system.

Responsibilities

• Contribute to the ongoing evolution of the company’s design system.
• Deliver pixel-perfect, production-ready UI focused on usability.
• Collaborate with product designers, engineers, and product managers.

Skills

UI Design

Visual Design

System Thinking

Figma

Collaboration

Accessibility Standards

Job description

Senior UI Designer, Mobile, B2C, Marketplace | London, Hybrid, UK Remote (Or 1 Day Hybrid from London) | Up to £85,000

Our client is an extremely well known, digital marketplace focused on sustainable e‑commerce. With over 35 million active users globally, they’re redefining how people buy and sell second‑hand fashion, aiming to make the future of style both circular and accessible.

The company has offices in the UK, EU and US and has experienced significant growth, especially around the US market and now operates as part of a leading global e‑commerce group. They pride themselves on fostering inclusivity, creativity, and innovation and values that extend to both their community and their teams.

The organisation champions diversity, equal opportunity, and flexible working. They offer a progressive benefits package designed to support wellbeing, learning, and work‑life balance.

About the Role

We’re seeking a Senior UI Designer to join the Design System team on a 12‑month fixed‑term contract. This role focuses on shaping and evolving the company’s design language across web and mobile platforms (iOS and Android).

You’ll play a key role in developing scalable, high‑quality UI components that enable product teams to create cohesive, accessible, and beautiful user experiences.

This position is ideal for someone who thrives on detail, loves system‑level design thinking, and can strike the right balance between consistency, creativity, and usability.

Key Responsibilities

• Contribute to the ongoing evolution of the company’s design system — creating, maintaining, and documenting reusable UI components and patterns for use across digital platforms.
• Deliver pixel‑perfect, production‑ready UI with a focus on usability, accessibility, and brand identity.
• Collaborate closely with product designers, engineers, and product managers to ensure design components are functional, scalable, and easy to implement.
• Identify opportunities to streamline workflows and standardise design patterns to improve product development efficiency.
• Champion system‑led design consistency across web and native platforms.
• Design engaging UI elements, transitions, and microinteractions that enhance the user experience.
• Optimise designs for multiple platforms, ensuring consistency across iOS, Android, and responsive web.
• Confidently present design concepts to stakeholders and wider teams.

Requirements

• Proven experience as a UI Designer, Visual Designer, or similar role within a digital product environment.
• A strong portfolio showcasing design craft, attention to detail, and experience in system thinking.
• Hands‑on experience working with or contributing to a design system.
• Advanced proficiency in Figma, including components, variants, and library management.
• Solid understanding of accessibility standards and inclusive design principles.
• Excellent collaboration skills and experience partnering with cross‑functional teams.
• Familiarity with design tokens and design‑to‑code workflows.
• Prior experience within e‑commerce, marketplace, or fashion‑related products.
• Working knowledge of motion design principles and interaction design.

What can they offer you?

• Private health and mental wellbeing coverage, including access to counselling and coaching.
• Salary of up to £85,000.
• 25 days annual leave, plus additional company‑wide rest days and volunteer leave.
• Flexible hybrid working, with the option to work abroad for limited periods.
• Pension matching, life insurance, and recognition for service milestones.

If you are interested in the Senior UI Designer, Mobile, B2C, Marketplace | London, Hybrid, UK Remote (Or 1 Day Hybrid from London) | Up to £85,000 then drop over your CV and we will give you a call if we think you are a good fit!