Senior Mobile Engineer (iOS & Android)

About AceSpeak

AceSpeak is an AI-powered interview and public-speaking coach for iOS and Android. It helps users practise interviews and presentations through structured feedback. AceSpeak is a product brand operated by Wistkey.

The role

Build and improve AceSpeak's native iOS and Android app experience. You will work on recording, playback, user feedback and progress-tracking features while helping turn an early MVP into a reliable, well-structured product.

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, backend and AI teams

• Support App Store and Google Play release processes

• Help establish maintainable engineering practices as the product grows

What we are looking for

• 5+ years in mobile engineering

• Strong native iOS or Android development experience, with willingness to work across both platforms

• Experience shipping and maintaining production mobile apps

• Solid API integration, debugging, testing and performance skills

• A pragmatic, product-minded approach

• Good written English and strong collaboration skills

Nice to have

• Audio or video capture and playback experience

• Flutter or React Native experience alongside native development

• Subscription, analytics or mobile accessibility experience

• Experience helping an MVP mature into a structured product

AceSpeak candidate exercise

Shortlisted candidates will be asked to complete a short AceSpeak practice exercise and achieve a total AceSpeak score above 3,000.

1. Download the AceSpeak app.

2. Record a 90-second to 2-minute response to: “Describe a product or project you helped improve and what you learned.”

3. Practise and re-record until your total AceSpeak score is above 3,000.

4. Send us a screenshot showing your score and display name. Please do not send the recording.

We will provide shortlisted applicants with free access for this exercise; you do not need to purchase a subscription. The score is one part of a human-reviewed application process and is not used as the sole hiring criterion. If the app or scoring format is not accessible to you, or you need a reasonable adjustment, email [email protected] and we will arrange an equivalent alternative exercise.

Location and package

Full-time hybrid role based on Hong Kong Island. HK$40,000–HK$60,000 per month, depending on experience.

How to apply

Email [email protected] with your CV and a brief note about a mobile app you shipped.

Full details: https://acespeak.uk/careers/senior-mobile-engineer-hk/

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