Join a talent-dense team of eight building the future of music creation. As a Backend Engineer, you will architect the foundation for millions of users, transitioning from NoSQL to Postgres while scaling media pipelines and payments. This is a high-ownership role for a systems-thinker ready to ship relentlessly in a fast-growing startup.
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Backend Engineer at Mozart AI
Join Mozart AI, the VC-backed startup revolutionizing music creation for over 100k users. We are looking for a Backend Engineer to own our core infrastructure—from leading a massive NoSQL to Postgres migration to scaling media pipelines that power professional-grade music generation. Backed by $7M from Balderton Capital and industry icons, this is your chance to join a talent-dense London team and build the 'Generative Audio Workstation' of the future. If you are a systems-thinking engineer who loves music and high-velocity shipping, this is the role for you.
About this role
Role overview
About the company
Mozart AI
SoftwareLondon, United KingdomPre-Seed (VC-backed)
At Mozart AI we’re reimagining how music is made. Our vision is to make music creation as universal and engaging as listening is for billions today. Our mission is to build products and experiences that turn musical intuition into studio-quality songs that are easy to share, monetise, and earn recognition for great taste.
We’re a venture-backed company supported by some of the best investors in the world, including a tier-1 VC (undisclosed for now), as we build the future of music creation.
Backed by EWOR, New Renaissance Ventures, Atlantis Ventures, Felix Jahn, Stefan Glaenzer.
What you'll do
What you will do
- Lead the end-to-end migration from non-relational to relational databases, ensuring zero-data-loss cutovers and canonical schema design.
- Own the payments and entitlements backbone using Stripe and RevenueCat to handle complex subscription lifecycles and cross-platform parity.
- Architect high-concurrency REST APIs and reliable media processing pipelines with global delivery via CDN caching and signed URLs.
Who you are
Who this is a fit for
- Has 3-5 years of experience with Node.js/TypeScript and deep expertise in relational SQL schema design and migrations.
- Demonstrates a production-ownership mindset with strong instincts for CI/CD, observability, and graceful degradation in high-traffic environments.
- Thrives in a high-velocity startup culture, acting as a "specialist generalist" who cares deeply about outcomes after the code is merged.
Why this role
Why this role is remarkable
- Work at the intersection of AI and creativity on a product used by 100k+ creators, including producers for A$AP Rocky and Avicii.
- Backed by $7M+ from top-tier investors including Balderton Capital and the founders of Eventbrite and Frame.io.
- High-impact ownership of critical infrastructure, from database migrations to real-time collaboration primitives in a rapidly scaling environment.
Jack & Jill
How Jack & Jill work together
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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.
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