On the other side, frontend developers primarily use HTML, CSS, and JavaScript. Python, Ruby, Node.js, and Java are some of the most popular backend programming languages. Front-end developers are frequently referred to as “client-side developers” to separate themselves from back-end developers, who program what happens behind the scenes (like databases).īackend developers must be fluent in programming languages that are used to render an application or website on the server-side. In 3 simple steps you can find your personalised career roadmap in Software development for FREEĪ front-end developer is someone who uses coding languages like HTML, CSS, and JavaScript to construct web designs.