Web Accessibility Interview Questions and Answers
WCAG, ARIA, keyboard navigation and inclusive design.
Whether you are preparing for entry-level Web Accessibility interview questions for freshers or senior software engineer interview questions addressing concurrency, scalability, and system architecture, this track provides peer-reviewed model answers with syntax walkthroughs, edge cases, and practical interview tips.
1 How do you build a custom widget that follows an ARIA authoring pattern? Hard
When no native element supports the interaction, you implement an ARIA design pattern and must replicate all the expected behaviour. A custom combobox, for example, needs role="combobox", aria-expanded, aria-controls and aria-activedescendant, plus a popup with role="listbox" containing role="option" children with aria-selected. Keyboard support is part of the contract: arrow keys move the active option, Enter selects, Escape closes and returns focus, and typing filters. Managing aria-activedescendant is often easier than moving DOM focus, but the active id must stay in sync.
Common failures include using role="button" without Space and Enter handling or keyboard focus, missing or stale aria-expanded on disclosure widgets, focus traps that cannot be escaped, and redundant ARIA that conflicts with native semantics.
Follow the WAI-ARIA Authoring Practices examples closely, prefer a tested headless library such as Radix, Headless UI or React Aria over hand-rolling, and verify with keyboard-only use and a screen reader.
2 How do you test and audit accessibility properly? Hard
Automated tools catch roughly a third of issues, so a complete audit combines them with manual and assistive-technology testing. Static checks include axe DevTools, Lighthouse, WAVE and lint plugins such as eslint-plugin-jsx-a11y or eslint-plugin-vuejs-accessibility in CI. These find missing alt text, contrast failures, missing labels and invalid ARIA.
Manual checks cover what tools cannot judge: meaningful reading order, sensible heading structure, keyboard-only operation of every flow, visible and logical focus, clear error identification and suggestions, and whether alt text actually describes the image's purpose.
Test with real assistive technology: NVDA or JAWS on Windows, VoiceOver on macOS and iOS, TalkBack on Android. Navigate by headings, landmarks, links and form fields, and try completing core tasks with the screen reader on. Include users with disabilities where possible.
Document conformance against WCAG 2.2 AA, track issues, and add regression tests so fixes do not break. Accessibility is a continuous practice, not a one-time audit.
Frequently Asked Questions About Web Accessibility Interviews
What do hiring managers evaluate in Web Accessibility technical rounds?
Technical interviewers look for foundational fluency, idiomatic syntax, clarity when communicating complex logic, and awareness of performance trade-offs (e.g. memory footprint, render performance, and network latency) in production environments.
What are the best interview tips for practicing Web Accessibility questions?
Use active recall: summarize each answer in your own words before revealing the model solution. Focus on explaining why a certain approach is chosen rather than just memorizing code syntax.