Mobile Engineer at music technology startup

Mobile Engineer

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.

Fast-growing music technology startup

As a Mobile Engineer, you will own the end-to-end mobile experience for a high-growth social creation platform. You will build and optimize a media-heavy React Native application, ensuring seamless performance and robust subscription logic. Working closely with the CTO, you will shape the architecture and deliver features that make professional‑grade creation accessible to everyone.

London, UK

• Work on a category-defining product backed by top‑tier VCs and industry‑leading angel investors.
• Join a talent‑dense, high‑velocity team where mobile is treated as a first‑class product rather than an afterthought.
• Influence the future of social expression by building tools used by hundreds of thousands of creators globally.

• Lead the development and release of major React Native features from initial prototype to production deployment.
• Optimize media feeds and lists to ensure high performance, targeting specific p90/p95 latency metrics.
• Manage the integrity of mobile revenue systems, including complex subscription states and cross‑platform entitlements.

• Proven expertise in shipping and maintaining high-performance React Native applications in production environments.
• Deep understanding of mobile media pipelines, including audio playback, buffering, and background processing.
• Strong experience implementing and debugging in-app purchases and subscriptions using tools like Revenue Cat or Store Kit.

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.

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.