Accessibility Engineer, Design Systems

Make accessibility the default for an enterprise design system

We are looking for a senior Accessibility Engineer to join a design systems team on a contract basis. The team owns a web component library used by product teams across a large global organisation to build accessibly by default. An ongoing accessibility sweep has produced a sizeable backlog, and you will bridge engineering, testing and design systems to clear it and raise the bar for everything that follows.

This is a European role (Barcelona preferred, London also considered), with EN 301 549 central to the work. The contract starts as soon as possible and runs to 30 June 2027. You will need to overlap with US colleagues until around 2pm ET (8pm CET) on Tuesdays to Thursdays; Mondays and Fridays are flexible.

What you will do

• Remediate: pick up existing sweep findings, understand them in a design system context and fix them as a developer through to release.
• Assess: test components not yet swept using the team's established framework, combining automated, semi-automated, manual and usability testing against WCAG and EN 301 549, and raise clear tickets.
• Document: write guidance that works both for people who read documentation and for people building with AI.
• Shape the future: bring accessibility expertise into the team's agentic AI workflow so new output starts accessible, and help create skills for teams composing with the components.

What you will bring

• Strong TypeScript and Web Components experience, including what Shadow DOM means for accessibility, plus Node and standard build and deploy pipelines.
• In-depth knowledge of WCAG and EN 301 549, grounded in fundamentals that let you spot and call out AI errors.
• Hands-on testing with Deque axe DevTools, NVDA, JAWS and VoiceOver, keyboard-only testing, screen magnification and contrast tooling.
• A real understanding of how disabled people use assistive technology, with a usability-first approach rather than box-ticking compliance.
• Clear written communication: what the issue is, why it matters and its impact on the user, plus accurate ticket scoping and estimation.
• A self-sufficient, proactive mindset that drives work forward once you are up to speed.

Nice to have

• Switch access testing experience
• Mobile accessibility testing
• IAAP WAS certification
• Experience with Copilot, Claude Code or other agentic workflows
• Some React exposure

How you will work

You will join a Scrum team with daily contact, a product owner and sprint planning, working closely with an accessibility developer and tester. There is a weekly sweep triad and a weekly remediation session with the accessibility team, within a wider group of around 30 people across the US.

The interview process has two stages: a live walkthrough of how you would test and approach an unseen component, then a short exercise reviewing AI-generated component output, presenting your findings, user impact and fix sizing.