Content design: Ensure content is written in plain language and headings, images, and links are accurately labeled.
Visual design: Ensure that designs are accessible, pages are laid out in a logical order, and content meets color contrast requirements.
UX design: Ensure that overall experience is built and designed in an accessible fashion, conduct usability testing with people who need accessibility features.
Ensure your team members know where to find the accessibility guidelines for their role and follow them from the start of a project. The guides are located here: front end, content design, and visual design.