# Senior Frontend Engineer - Design System at Synthesia

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Co-own and evolve the shared design syst

- **Company:** Synthesia (https://jobs.trythestack.co/companies/synthesia)
- **Location:** United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** React, TypeScript, HTML, CSS, JavaScript, Design Systems, Component API Design, WCAG 2.2 AA, Storybook, Responsive Design, Web Performance, Theming, Localization, RTL Support, Version Control, Frontend Architecture
- **Posted by employer:** 2026-07-06
- **Added to The Stack:** 2026-07-07
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.ashbyhq.com/synthesia/f7a77b1b-e458-497c-8c76-d33a114bec04 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/senior-frontend-engineer-design-system-synthesia

## About the role

Responsibilities:
- Co-own and evolve the shared design system: component library, tokens, documentation and Storybook.
- Design component APIs and machine-readable interfaces so both humans and AI agents can compose UI correctly.
- Ensure components are accessible by default (WCAG 2.2 AA) and implement theming, localization and RTL support.
- Produce high-quality React/TypeScript code, improve performance and maintainability of components.
- Improve developer experience: docs, versioning, migration paths and tooling for adoption across teams.
- Partner with design, product and accessibility engineers to define patterns and measure adoption.

Requirements:
- 5+ years software engineering experience with ~3 years in senior roles owning design systems or component libraries.
- Deep expertise in React and TypeScript, Storybook and component API design.
- Strong knowledge of accessibility standards (WCAG 2.2 AA) and best practices for globalization.
- Experience building developer tooling, documentation and measurable adoption-focused improvements.
- Excellent collaboration and communication skills to work with design, product and engineering stakeholders.

## Responsibilities

Co-own and evolve the shared UI foundation, focusing on building high-quality, accessible components and tooling. Extend the design system to be AI-friendly, ensuring it is easily consumable by both human developers and AI agents.

## Requirements

Requires at least five years of software engineering experience, including three years at a senior level with ownership of a design system. Must possess deep expertise in React, TypeScript, and accessibility standards (WCAG 2.2 AA).

## FAQ

- **Is this Senior Frontend Engineer - Design System role still open?** It was posted on 2026-07-06. Listings more than 30 days old may no longer be active, so check Synthesia's site before applying.
- **Does Synthesia offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Synthesia's site.
- **Where is this role located?** The listing gives the location as United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: React, TypeScript, HTML, CSS, JavaScript, Design Systems, Component API Design, WCAG 2.2 AA, Storybook, Responsive Design, Web Performance, Theming, Localization, RTL Support, Version Control, Frontend Architecture.

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## Notes for agents

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