At a Glance
- Tasks: Lead the visual redesign of a mobile app and create a scalable design system.
- Company: Join COCONE UK, a dynamic subsidiary of a Japanese company focused on emotional mobile experiences.
- Benefits: Enjoy a hybrid work model, competitive salary, and opportunities for professional growth.
- Other info: Collaborate with a creative team in an international environment.
- Why this job: Make a real impact on user engagement through innovative UI/UX design.
- Qualifications: 5+ years in product design with a strong portfolio and experience in design systems.
The predicted salary is between 60000 - 75000 € per year.
About Us
COCONE UK is the subsidiary of Cocone ONE Corporation, a Japanese company known for avatar-based social mobile experiences. We build consumer-facing mobile products focused on emotional connection, engagement, and long-term user relationships.
About the Role
We are looking for a Senior UI/UX Designer (UI & Design System-led) based in London (hybrid model) to take creative ownership of the visual experience of a live mobile product on Android and iOS with built-in gamification. This role is centered on a full visual redesign of the product and the creation of a scalable design system that defines how every screen, component, and interaction looks and feels. You will translate our target audience, brand, and emotional positioning into a cohesive, high-craft UI and continue to refine user flows where they intersect with the visual layer. You will work closely with product managers, engineers, and artists to ensure design decisions are grounded in user needs while supporting business objectives.
What You'll Do
- Lead an end-to-end visual redesign of a consumer-facing mobile application built in Unity, raising the bar on craft, hierarchy, and emotional tone.
- Build and own a scalable design system: typography, color, components, iconography, motion, and usage guidelines.
- Translate audience insights, brand positioning, and product goals into a cohesive visual language across all screens and features.
- Design high-fidelity UI for core features and systems, ensuring consistency and quality across the product.
- Conduct UX audits to identify visual inconsistencies, usability friction, and opportunities to elevate the experience.
- Refine user flows, information architecture, and wireframes where they intersect with the visual redesign.
- Define UX hypotheses, validate them through testing, and iterate based on insights.
- Collaborate closely with product and engineering teams to ensure designs are feasible and faithfully implemented.
- Analyze user behavior data, usability testing results, and qualitative feedback to inform design decisions.
- Establish clear recommendations for improving usability, consistency, and accessibility.
Requirements
Experience
- 5+ years of professional product design experience for consumer-facing mobile applications, with a strong portfolio of shipped UI work.
- Demonstrated experience building and scaling a design system from the ground up (typography, color, components, iconography, motion).
- Proven experience leading a full visual redesign or major UI overhaul of a live product.
- Experience owning UI for complex systems and feature sets, not just individual screens.
- Strong track record of collaboration with product managers and engineers.
- Experience contributing to product improvements tied to engagement or retention metrics.
Skills
- Exceptional visual design skills: typography, color theory, layout, hierarchy, iconography, and component design.
- Deep understanding of design systems — how to structure, document, and scale them.
- Strong sensibility for emotional tone, brand expression, and craft in consumer mobile UI.
- Solid understanding of mobile platform conventions and constraints (Android and iOS).
- Strong grasp of UX principles, interaction design, and information architecture.
- Ability to diagnose UX problems and propose effective, scalable solutions.
- High proficiency with modern design tools (Figma or equivalent), including advanced use of components, variables, and tokens.
- Ability to clearly articulate design decisions and rationale.
- Experience leveraging data, user feedback, and usability testing to guide design decisions.
- Understanding and ability to apply gamification principles in UI/UX.
Soft Skills
- High level of ownership and accountability.
- Strong communication and cross-functional collaboration skills.
- Comfort working in an international environment.
- Proactive, problem-solving mindset.
- Strong attention to product quality and user experience.
Nice to Have
- Experience designing for social features, avatar systems, fashion/customization, or emotionally-driven digital experiences.
- Experience designing for female-skewing or lifestyle-oriented consumer audiences.
- Familiarity with accessibility best practices.
- Experience mentoring or guiding other designers.
- Experience implementing UI assets in Unity.
Interview Process
- Initial Interview (30–45 minutes)
- Practical Test (2–3 days)
- Design Review & Deep Dive (60–90 minutes)
- Final Interview & Offer Discussion (30–40 minutes)
- 3-Month Probation Period
How to Apply
- CV
- Portfolio showcasing high-fidelity UI work, design system samples, and shipped consumer mobile products (mandatory)
- Optional: a brief written reflection on a redesign or design system project you led
Senior UI/UX Designer in City of London employer: Cocone UK
COCONE UK is an exceptional employer that fosters a creative and collaborative work environment, perfect for a Senior UI/UX Designer looking to make a significant impact on consumer-facing mobile products. With a hybrid working model in London, employees benefit from a strong focus on emotional connection and user engagement, alongside opportunities for professional growth through hands-on experience in building scalable design systems and leading visual redesigns. The company values innovation and craftsmanship, making it an ideal place for designers passionate about creating meaningful user experiences.
StudySmarter Expert Advice🤫
We think this is how you could land Senior UI/UX Designer in City of London
✨Tip Number 1
Get your portfolio in tip-top shape! Make sure it showcases your best UI work and any design systems you've built. Highlight projects that demonstrate your ability to create emotional connections through design.
✨Tip Number 2
Network like a pro! Reach out to other designers, product managers, and engineers in the industry. Attend meetups or online events to make connections that could lead to job opportunities.
✨Tip Number 3
Prepare for interviews by practising your design rationale. Be ready to explain your design decisions and how they align with user needs and business goals. This will show you’re not just a pretty face but a strategic thinker too!
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive about their job search.
We think you need these skills to ace Senior UI/UX Designer in City of London
Some tips for your application 🫡
Show Off Your Portfolio:Make sure your portfolio is front and centre! We want to see your high-fidelity UI work and any design systems you've built. Highlight projects that showcase your skills in consumer-facing mobile applications, especially those with emotional connections.
Tailor Your CV:Don’t just send a generic CV! Tailor it to highlight your experience in UI/UX design, especially focusing on your work with mobile apps and design systems. We love seeing how your past roles align with what we’re looking for.
Craft a Thoughtful Reflection:If you choose to include the optional written reflection, make it count! Share insights from a redesign or design system project you led. We’re keen to understand your thought process and how you tackle challenges.
Apply Through Our Website:We encourage you to apply through our website! It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at COCONE UK!
How to prepare for a job interview at Cocone UK
✨Showcase Your Portfolio
Make sure your portfolio is up to date and highlights your best work, especially any projects that involved a full visual redesign or building a design system. Be ready to discuss the thought process behind your designs and how they align with user needs and business objectives.
✨Understand the Company’s Vision
Research COCONE UK and their products thoroughly. Understand their focus on emotional connection and engagement in mobile experiences. This will help you tailor your responses to show how your design philosophy aligns with their goals.
✨Prepare for Practical Tests
Since there’s a practical test involved, brush up on your design skills using tools like Figma. Practice creating components and design systems quickly, as well as refining user flows. This will help you demonstrate your ability to think on your feet during the interview.
✨Collaborate and Communicate
Highlight your experience working closely with product managers and engineers. Be prepared to discuss how you’ve collaborated in the past to ensure designs are feasible and meet user needs. Strong communication skills will be key in showcasing your ability to work in cross-functional teams.
