Senior Mobile Engineer — iOS & Android

Job Description

AceSpeak is looking for a Senior Mobile Engineer to build and improve our 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 AceSpeak candidate exercise All applicants are required to complete a short AceSpeak practice exercise and achieve a total AceSpeak score above 3,000 before submitting an application. Download AceSpeak on iOS or Android. 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. Record a 90-second to 2-minute response to: “Describe a product or project you helped improve and what you learned.” Practise and re-record until your total AceSpeak score is above 3,000. Send us a screenshot showing your score and display name. 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 hello@acespeak.uk and we will arrange complimentary access or an equivalent alternative exercise. Employment: Full time. Location: Remote / hybrid within the UK; London preferred. Salary: £60,000–£80,000 / year. Email hello@acespeak.uk with your CV and a short note on a mobile app you helped ship.