Senior Design System Engineer (London) in Kennington

About Fresha

Fresha is the leading AI-powered operating system for the global beauty and wellness industry, giving businesses everything they need to run smarter, grow faster and build stronger client relationships. Our mission is simple: help beauty and wellness businesses grow by giving them the technology they need to attract clients, manage their operations and run their business in one place.

Role Overview:

You'll join the Design System team and report to its Team Lead. The team owns Fresha's two design systems, one for the partner app businesses use and one for the consumer marketplace, and each runs across three platforms: web, iOS and Android. This role is primarily web-focused.

What You'll Do:

• Build the foundations: Design and ship the components, primitives, tokens and patterns every Fresha surface is built from.
• Keep their APIs consistent and hard to misuse.
• Build for every language: Ensure components handle RTL layout, text expansion and locale-aware formatting.
• Build the quality gates: Accessibility checks, visual regression, lint rules and tests that make accessibility the default.
• Make the system legible to agents: Treat component data, usage guidance and examples as a product agents consume.
• Close the gap with design: Work with designers so Figma and code describe the same system.
• Work with your users: Sit with product teams, find where the system slows them down, and fix it.
• Run the machinery: Own the infrastructure that keeps the system moving.
• Retire what came before: Migrate product code off legacy components and styling.

Our stack:

On web, where this role focuses, React and TypeScript, styled with Panda CSS and built on React Aria for accessible behaviour. Components are developed in Storybook and tested with Vitest and Playwright.

What We're Looking For:

• Experience: 7+ years building frontend software in production.
• AI first: AI is your default way of working.
• React and TypeScript, deeply: You design component APIs that are consistent and hard to misuse.
• CSS at the system level: You understand styling architecture, theming, tokens, and how styles behave at scale.
• Accessibility: You know what WCAG and ARIA cover.
• Internationalisation: You understand what it takes for UI to work across languages and scripts.
• Design fluency: You're comfortable in Figma.
• Systems thinking: You think about the system, not the screen.
• Generalist under the hood: You're happy outside React.
• Communication and EQ: You communicate clearly, listen well and build strong working relationships.

Nice to have:

• Zero-runtime or atomic CSS: Experience with Panda CSS, StyleX or Tailwind.
• Native experience: Hands-on Swift or Kotlin.

Your Opportunity at Fresha:

• Room to specialise: A team whose whole job is design systems.
• Your work is on every screen: Two design systems across web, iOS and Android.
• Your users sit next to you: Product engineers and designers who'll tell you within a day whether what you built helps.
• A design system for the agent era: Agents are already building UI against our system in daily use.
• Foundations already laid: One styling path, an accessibility baseline and an agent interface are in place.

Interview Process:

• Screen Stage - Video call with a member of the Talent Team (30min)
• 1st Stage - Video/in-person interview with the Hiring Manager (60min)
• Tech Stage - Video/in-person interview with the Hiring Team (up to 2 hrs)
• Final Stage - Video/in-person interview with the CTO (up to 30min)

Inclusive workforce:

At Fresha, we are creating a culture where individuals of all backgrounds feel comfortable. We want all Fresha people to feel included and truly empowered to contribute fully to our vision and goals.