What does a web developer do?
A web developer builds websites. From a design and a brief they write the front end, the HTML, CSS and JavaScript that make a page look and behave as designed on every screen, and often the back end, the server code, databases and content management systems that store the content and serve the pages. They integrate forms, analytics, e-commerce, video, search and whatever else the site has to do, make it fast, make it accessible, make it secure and keep it running after launch.
The role divides into front-end, back-end and full-stack developers, and in agencies it often divides again by platform: WordPress, Shopify, Webflow, custom frameworks. A developer on a marketing site is less concerned with the architecture of a large application and more with speed, polish and the fidelity of the design, which is its own discipline.
Why it matters
Why a web developer matters
A design is a promise; the developer keeps it. The difference between a site that looks like the mockup and one that nearly does is the developer's care, and visitors feel it in the small things: the transition that is smooth, the page that loads before they notice, the form that works on a phone. Developers also decide, in practice, how fast the site is, how well search engines can read it and how easily the marketing team can change it without calling anyone, which is most of what a site costs to run over its life.
In practice
How a web developer works in practice
- 01
The developer starts with the designs, the content model and the technical requirements, and chooses the stack to fit: the platform, the hosting, the integrations. They build the templates and components to match the design, wire them to the content system so that editors can publish without touching code, and test across browsers and devices as they go. Performance and accessibility are built in, because retrofitting both is expensive.
- 02
Before launch they set up analytics, redirects from the old site, search console, security and backups, and run through the checklist that catches the broken link and the missing image. After launch they maintain: updates, fixes, new templates, and the performance work that keeps a site fast as content grows. A good developer treats the site as something that lives rather than something that shipped.
At RIOT
Web developers at RIOT
We build what we design. This glossary runs on a site we develop in-house, and our products are code too: Krova, our production software; AltSounds, our music video channel; Muvvoo, our music video database. Having developers in the same studio as the designers and the filmmakers means the site that shows our work is built with the same care as the work, and changes when we want it to.
Watch out
What people get wrong about web developers
Hiring the developer after the design is finished. A developer in the first meeting can say what will be slow, what will be expensive and what the platform does for free, and a design made without that knowledge is rebuilt in the browser. The other mistake is judging the build on launch day. A site is fast and clean when it launches and slow and cluttered two years later unless someone is maintaining it, and that someone is the developer.
