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 $7M from Balderton Capital and industry icons, this is your chance to join a talent-dense London team and build the 'Generative Audio Workstation' of the future. If you are a systems-thinking engineer who loves music and high-velocity shipping, this is the role for you.
About this role
Role overview
About the company
Mozart AI
SoftwareLondon, United KingdomPre-Seed (VC-backed)
Mozart AI - VC-backed Generative Audio Workstation
Backed by EWOR, New Renaissance Ventures, Atlantis Ventures, Felix Jahn, Stefan Glaenzer.
What you'll do
What you will do
- Lead the end-to-end migration from non-relational to relational databases, ensuring zero-data-loss cutovers and canonical schema design.
- Own the payments and entitlements backbone using Stripe and RevenueCat to handle complex subscription lifecycles and cross-platform parity.
- Architect high-concurrency REST APIs and reliable media processing pipelines with global delivery via CDN caching and signed URLs.
Who you are
Who this is a fit for
- Has 3-5 years of experience with Node.js/TypeScript and deep expertise in relational SQL schema design and migrations.
- Demonstrates a production-ownership mindset with strong instincts for CI/CD, observability, and graceful degradation in high-traffic environments.
- Thrives in a high-velocity startup culture, acting as a "specialist generalist" who cares deeply about outcomes after the code is merged.
Why this role
Why this role is remarkable
- Work at the intersection of AI and creativity on a product used by 100k+ creators, including producers for A$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.
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