Senior UI Designer

Quantum; City Of London; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading digital solutions company in the City of London is seeking a Senior UI Designer to lead the visual design of mobile-first websites and product UIs. You will mentor the design team, develop scalable design systems, and collaborate closely with product managers and developers. Ideal candidates have 5+ years of experience and an inspiring portfolio showcasing mobile-first designs. This full-time role offers competitive salary and benefits.

Benefits

Competitive Base Salary

Company Bonus Scheme

Private Health Care (Bupa)

Market Leading Training Programme

Annual Company Conference

Qualifications

• 5 years of UI / digital product design experience in a fast-paced digital-first environment.
• Inspiring portfolio demonstrating excellence in UI design including mobile-first responsive web.
• Strong understanding of front-end principles and collaboration with UX product teams.

Responsibilities

• Lead visual design for mobile-first websites and product UIs.
• Develop scalable design systems and UI libraries.
• Collaborate with teams to deliver cohesive end-to-end journeys.

Skills

UI / digital product design experience

Proven ability to lead UI work

Expert in Figma

Excellent communication skills

Tools

Figma

HTML5

CSS

InVision

Sketch

Job description

Our Company

At Quantum we connect global brands with high-intent consumers. We turn intent into action and complexity into clarity.

Our Mission is clear to help smarter faster buying decisions. Our vision to be the worlds most used digital comparison service delivering value and simplicity to millions.

We drive growth through data-driven affiliate marketing built for performance from day one. Every campaign is measurable optimised in real time and designed to scale.

With in-house tech full-stack analytics and a compliance-first mindset we give our partners an edge. We drive confident decisions and growth in regulated and high-growth sectors. Weve helped ambitious brands grow faster smarter and globally.

The Role

As Senior UI Designer you will be the guardian of interface excellence across our brands and platforms. Working across websites landing pages tools and marketing environments your mission is to lead the visual evolution of our digital products while mentoring and inspiring the wider team.

Youll collaborate closely with product managers UX designers developers and marketers to bring data-informed intuitive and engaging interfaces to life. This is a hands-on role where youll lead by doing applying your design craft while creating systems sharing knowledge and helping establish design standards as we grow.

Key Responsibilities

• Lead visual design for mobile-first websites landing pages and product UIs across QiH brands.
• Develop and manage scalable design systems and UI libraries that ensure consistency across products while supporting rapid testing and iteration.
• Translate strategic goals user needs and data insights into polished usable and conversion-led UI solutions
• Collaborate with Product UX development and marketing teams to deliver cohesive end-to-end journeys
• Uphold consistency accessibility and best practices across all outputs
• Act as a design leader and mentor to the wider team offering regular feedback guidance and support
• Contribute to the evolution of design processes and documentation
• Help champion a culture of design by data collaboration and continuous learning
• Stay ahead of UI trends tools and technologies and bring fresh thinking to the team

What We’re Looking For

• 5 years of UI / digital product design experience in a fast-paced digital-first environment
• Proven ability to lead UI work across multiple projects and stakeholders
• An inspiring portfolio demonstrating excellence in UI design including mobile-first responsive web and conversion-led design

Expert in Figma and design system development

• Strong understanding of front-end principles (you dont need to code but you need to collaborate)
• Experience working with UX product and development teams in agile environments
• A mentors mindset you love helping others grow and build confidence in their craft
• Excellent communication presentation and problem-solving skills
• A proactive adaptable attitude and collaborative spirit

Nice to Have

• Experience in performance marketing iGaming or fintech
• Familiarity with creative automation tools (Bannerflow)
• Knowledge of accessibility standards (WCAG)
• Experience leading or supporting rebrand or product redesign initiatives
• Light prototyping and motion design (e.g. Principle After Effects)

What Youll Get

• Competitive Base Salary
• Company Bonus Scheme
• Private Health Care (Bupa)
• Travel Insurance
• Market Leading Training Programme

Recognition & Reward Scheme

• Annual Company Conference (previous destinations Vienna Bologna Dubrovnik and Thessaloniki)
• Regular Happy Hour / Team Lunches
• Free Coffee Drinks & Snacks

Whats the next step

Our hiring process ensures were recruiting the right people for the role. We ensure that people are as suitable for us as we are for them.

If you like the sound of what were all about at Quantum and want to join a team where you can make an impact please apply or contact us at

Required Experience :

Senior IC

Key Skills

CSS,InVision,Balsamiq,HTML5,Information Architecture,Ux,Usability,UI,IOS,Figma,Responsive Web Design,Sketch

Employment Type : Full-Time

Experience : years

Vacancy : 1