I worked at an agency with a client who had gone through a lawsuit for accessibility (Target, the US retailer). That meant, as a front-end developer, I was obligated to learn about accessibility and work with Target's QA and accessibility teams to ensure our deliverables were accessible. I met some fantastic people at Target who were blind and visually impaired, and my love for accessibility grew.
I learned we can all make a big difference on the web for people with disabilities by designing and developing inclusively. In those early days, I pushed for accessibility in other business verticals such as gaming and arts websites, even if it wasn't a requirement in the contract. There were easy wins I could implement all over the place, such as form labels, alt text and button / link text. And once that door was open, I saw many opportunities for growth. Years later, it's still my favorite web development topic!