The role of a web developer encompasses designing, building, and maintaining websites and web applications. They work with various technologies, including HTML, CSS, JavaScript, and server-side languages to create user-friendly and functional sites. Web developers collaborate with designers and clients to meet specific project requirements, ensuring that the final product is visually appealing and performs well across different browsers and devices. Their responsibilities may also involve website optimization for speed and search engine visibility, as well as troubleshooting technical issues. Overall, web developers play a pivotal role in shaping the online presence of businesses.