Founding Designer

September 25, 2026

Office

Senior

London, UK

May rule you out

Office-only work

Worth knowing

English is required

Description

Mozart AI, a London-based music creation startup backed by over $7M from Balderton Capital, is hiring a Founding Designer to own the entire visual and product experience. The role spans consumer brand identity, design systems in Figma and code, product UX, landing pages, lifecycle email and marketing assets. You will define what Mozart looks like, sounds like and feels like, then turn it into a system anyone can ship on-brand work from, including AI agents writing code. This is a full-time, in-person role in Central London with relocation support.

Responsibilities

Define the consumer brand: identity, typography, colour, illustration, voice and motion
Own how the product looks, feels, behaves and navigates across every surface
Build the design system in Figma and in code: tokens, primitives, components and patterns as one source of truth
Own in-app moments, notifications and lifecycle email design and copy
Own the landing page design and copy, testing and rewriting until it converts
Set the standard for marketing assets: static ads, email templates, app store and reusable templates
Shape the visual look of social content so the accounts read as a brand
Prototype in hours, use AI tools and ship frontend yourself when that is the quickest path
Treat every design as a hypothesis with a target cohort and a measured outcome, then iterate on data

Requirements

Figma expert able to build full interactive prototypes
Proven track record shipping real consumer brand identities: logo, type, colour, illustration and voice
Experience building a design system engineers actually used, in Figma and in code, with tokens and components kept in sync
Strong consumer product sense designing apps people come back to and know when to remove a step
Ability to write copy for landing pages, ads and in-product moments as part of the design
Experience designing for every surface: ads, email, app store and social, not only the product
Data-driven approach: reading cohort data, tying design decisions to metrics and iterating fast
High ownership, low ego, shipping fast and caring about outcomes after release

Conditions

Full-time employment
In-person work from the Central London office 5 days per week
Right to work in the UK preferred; visa sponsorship possible for exceptional candidates
Relocation to London supported

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