Senior Frontend Engineer - Design System at Synthesia
May no longer be active — verify on the employer site
At a glance
- Company
- Synthesia
- Location
- United Kingdom
- Work arrangement
- On-site
- Employment type
- Full-time
- Experience
- 5–10 years
- Working hours
- 40 hours
- Visa sponsorship
- Offered, according to the listing
- Posted
- Added to The Stack
✨ The Stack take on this Synthesia job
- 🏢 Synthesia has 7 jobs here, 7 with visa sponsorship see all
- 🛂 Skilled Worker visa. Standard minimum salary: £41,700 a year guide
Updated 2026-11-05, from our data and official sources.
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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).
Key skills
- React — in 277 other listings on The Stack
- TypeScript — in 467 other listings on The Stack
- HTML — in 23 other listings on The Stack
- CSS — in 31 other listings on The Stack
- JavaScript — in 141 other listings on The Stack
- Design Systems — in 29 other listings on The Stack
- Component API Design — not in any other listing on The Stack
- WCAG 2.2 AA — in 7 other listings on The Stack
- Storybook
- Responsive Design
- Web Performance
- Theming
- Localization
- RTL Support
- Version Control
- Frontend Architecture
On The Stack (as of 2026-11-05)
Frequently asked questions about Synthesia
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.