Mid-level Frontend Engineer
Mozart AI - VC-backed Generative Audio platform with $7M+ raised from Balderton Capital and the founders of Eventbrite and Frame.io.
Job Description
Join a talent-dense team of eight building the future of music creation. You will own major product milestones end-to-end for a platform already serving 100k+ users. You'll lead a critical migration to server-side rendering and redesign the frontend architecture, ensuring the codebase remains scalable and performant as the product evolves rapidly.
Location
London, UK
Why this role is remarkable
* Work on a category-defining product backed by top-tier investors like Balderton Capital and industry icons from Eventbrite and Frame.io.
* Exceptional traction with 1M+ songs already created by a diverse user base ranging from shower singers to A$AP Rocky’s producer.
* High-impact founding culture where you have significant equity and the autonomy to shape the architectural future of a high-growth AI startup.
What you will do
* Redesign the frontend architecture to establish clean component structures and scalable state management patterns using React and TypeScript.
* Lead the incremental migration to server-side rendering (Next.js) to optimize SEO and performance for high-value user-facing pages.
* Partner with backend engineers to execute a critical database migration from non-relational to relational systems with zero data loss.
The ideal candidate
* 3-5 years of experience with deep expertise in React internals, TypeScript mastery, and professional-grade state management (Zustand/Redux).
* Proven track record of shipping server-side rendering (SSR) in production environments and managing complex, media-heavy frontend performance.
* A founding-team mindset characterized by high velocity, low ego, and a first-principles approach to solving technical and product challenges.
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