You will own the end-to-end mobile experience for a viral music creation platform used by over 100,000 creators. As a key early hire, you'll build a high-performance React Native foundation, ship major features from prototype to production, and ensure the app feels 'Instagram-fast' while integrating professional-grade AI audio tools.
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London, United Kingdom£60k-£100k + Equity
Mobile Engineer at Mozart AI - VC-backed music tech startup
Join Mozart AI, the Balderton-backed startup where 100k+ users have already created 1M+ songs. We're looking for a React Native expert to own our mobile experience end-to-end. If you want to build the 'Instagram of music creation' alongside a talent-dense team in London and ship features that reach millions of listeners, this is your role. You'll get significant equity, work with top-tier AI audio tech, and help define the future of how the world creates music.
Overview
Role overview
Company
Mozart AI
SoftwareLondon, United KingdomPre-Seed (VC-backed)
Mozart AI - $7M+ VC-backed music technology startup
Backed by EWOR, New Renaissance Ventures, Atlantis Ventures, Felix Jahn, Stefan Glaenzer.
Responsibilities
What you will do
- Architect and ship major React Native features while maintaining high-performance standards and p95 metrics for media loading.
- Lead the integration of complex mobile subscription states and revenue integrity using RevenueCat and native store kits.
- Collaborate directly with the CTO and Growth Lead to build a robust analytics foundation for data-driven product evolution.
Candidate profile
Who this is a fit for
- Proven expert in React Native who has shipped and maintained production apps on both iOS and Android stores.
- Experienced in optimizing media-heavy feeds, handling background audio playback, and managing complex local/global state tradeoffs.
- Strong background in implementing in-app purchases and managing the technical edge cases of subscription lifecycles and entitlements.
What makes it remarkable
Why this role is remarkable
- Join a rocket ship that reached 1M+ songs created and 10M+ Spotify streams within months of its viral beta launch.
- Backed by $7M+ from elite investors including Balderton Capital and the founders of Eventbrite and Frame.io.
- High-impact ownership where you define the mobile architecture and standards for a product used by world-class music producers.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Meet Jack
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How does this work?
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If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
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