To thrive as a Web Accessibility Developer, you should possess strong knowledge of web standards (HTML, CSS, JavaScript), accessibility guidelines (such as WCAG), and experience with assistive technologies. Familiarity with accessibility testing tools like Axe, WAVE, or Lighthouse, as well as certifications like CPACC or WAS, is highly valued. Excellent problem-solving, attention to detail, and clear communication skills enable you to advocate for accessibility across varied teams. These competencies are crucial to ensuring web applications are inclusive, legally compliant, and accessible to all users.