Product Designer — Mobile UX & Design Systems

About AceSpeak

AceSpeak is an AI-powered interview and public-speaking coach for iOS and Android, developed by Wistkey UK Limited. We are moving beyond the MVP stage and building a clearer, better-structured product development process.

The role

We are hiring a Product Designer to shape intuitive mobile and web experiences and establish a scalable design system. You will work closely with product and engineering to turn user needs and early product learning into polished, coherent experiences.

What you will do

• Design mobile app screens, user journeys and interaction flows
• Create prototypes and validate ideas through practical usability work
• Build and maintain a scalable design system
• Collaborate closely with product and engineering from discovery through delivery
• Improve onboarding, practice, subscription and progress experiences
• Maintain consistent visual quality across mobile and web

What we are looking for

• 5+ years in product, UX or UI design, ideally with mobile experience
• A strong portfolio covering user journeys, interaction design and polished interfaces
• Advanced Figma or equivalent design-tool skills
• Experience creating design systems and developer-ready specifications
• Clear communication, strong collaboration and a pragmatic approach to iteration
• Good written English and close attention to detail

Nice to have

• Consumer coaching, education or wellbeing product experience
• Mobile accessibility, localisation or motion-design knowledge

AceSpeak candidate exercise

All applicants are required to complete this AceSpeak practice exercise and achieve a total AceSpeak score above 3,000 before submitting an application.

1. Download AceSpeak on iOS or Android.
2. DM @acespeak.uk on Instagram with the role title to request a complimentary analysis token. The token is issued privately; do not purchase a subscription or share it.
3. Record a 90-second to 2-minute response to: “Describe a product or project you helped improve and what you learned.”
4. Practise and re-record until your total AceSpeak score is above 3,000.
5. Include a screenshot showing your score and display name with your application. Please do not send the recording.

The score is one part of a human-reviewed application process and is not used as the sole hiring criterion. If you cannot use Instagram, the app or the scoring format, need another token, or need a reasonable adjustment, email [email protected] and we will arrange complimentary access or an equivalent alternative exercise.

Location and package

Full-time remote or London-based role for candidates in the United Kingdom. £55,000–£75,000, depending on experience.

How to apply

Apply here: https://acespeak.uk/careers/product-designer-uk/

Questions or adjustment requests: [email protected]

Explore AceSpeak careers: https://acespeak.uk/careers/