Senior Mobile Engineer — iOS & Android

About AceSpeak

AceSpeak is an AI-powered interview and public-speaking coach for iOS and Android. It scores a short speaking clip across gestures, facial expression, pace, intonation and pauses, helping users prepare for interviews and presentations. AceSpeak is a product operated by Wistkey UK Limited.

The role

Build and improve AceSpeak's native iOS and Android app experience. You will work on recording, playback, scoring and progress-tracking features that help users practise speaking confidently.

Responsibilities

• Develop native app features for iOS and Android
• Improve recording, playback and clip-review flows
• Ship app updates with strong stability and performance
• Collaborate with product, design and backend teams
• Support App Store and Google Play release processes

What we're looking for

• 5+ years building mobile apps, preferably on both iOS and Android
• Strong Swift/SwiftUI or Objective-C skills, plus Kotlin/Java
• Experience with native audio/video capture and playback
• A user-focused approach and high attention to detail
• Good written English and strong collaboration skills

Nice to have

• App Store / Google Play release experience
• Subscription and in-app purchase experience
• Mobile accessibility and localisation knowledge

Apply

Email [email protected] with your CV and a short note on a mobile app you helped ship. Full role details and application page: https://acespeak.uk/careers/senior-mobile-engineer-uk/