Web developers build and maintain websites, working with clients to bring their products and services online. They solve logical problems and experiment with new technologies. Web development offers a good work-life balance and comfortable salaries. Front-end developers use technologies like HTML, CSS, and JavaScript to ensure effective content presentation and user experience. Back-end developers use languages like Java and Python to store and serve data to front-ends. Full-stack developers are comfortable with both front-end and back-end development, working across client and server sides.