This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network

The next step is to speak to Jack.

Job Title: Mobile Engineer

Salary: £60k-£100k + Equity

Company Description: Mozart AI - $7M+ VC-backed music technology startup

Job Description:

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.

Location: London, UK

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.

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.

The ideal candidate:

• 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.

Who are Jack & Jill?

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.

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.

Next steps

Step 1. Visit our website.

Step 2. Click 'Talk to Jack'.

Step 3. Talk to Jack so he can understand your experience and ambitions.

Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.

Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.

Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.