Senior Frontend Engineer, Design System
Role Summary
Join Synthesia as a Senior Frontend Engineer to develop an AI-friendly design system, ensuring scalability and accessibility for global teams.
About the Organisation
As a Senior Software Engineer on our Design System team, you'll be a co-owner of the shared UI foundation that every Synthesia product is built on. You will be shaping direction and making key decisions together with the team, likely with a focus area of your own but context across the whole system. This is a hands-on engineering role: your primary output is high-quality component code and the tooling around it.
The defining challenge of this role is making that foundation AI-friendly: a design system that both people and AI can build with. As AI tools generate more of our UI, the system has to make it effortless to produce interfaces that are on-brand, accessible and correct by construction, whether the author is a human or an agent.
We're living the golden age of AI. The next decade will yield the next iconic companies, and we dare to say we have what it takes to become one. Here's why,
Minimum Requirements
- At least five (5) years as a software engineer, including three (3) at senior level, building frontend platforms, with real ownership of a design system or shared component library used across multiple products.
- Deep frontend expertise: expert HTML, CSS and JavaScript/TypeScript, with strong React and familiarity with modern build tooling.
- A strong command of component API design, versioning and the developer experience of shared libraries.
- Experience (or strong interest) in making component libraries consumable by AI
- Solid understanding of responsive design, cross-browser compatibility and web performance.
- Comfortable building components to WCAG 2.2 AA / EN 301 549 and verifying them yourself with a keyboard and screen reader — accessibility is part of your definition of done, not a separate pass.
- A strong sense of craft and attention to detail, and the ability to balance design intent with engineering constraints.
- Strong communication and collaboration skills, and a passion for improving developer productivity and end-user experience.
- A strong design sensibility — an eye for visual detail and the judgement to push back on and improve design decisions, not just build them.
- Experience implementing multi-brand theming in production.
- Experience with localization and internationalization (including RTL) for a global audience.
Eligibility Criteria
Candidates should be skilled in frontend development, particularly in React and TypeScript, and be capable of working in a collaborative, AI-focused environment.
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