What does a Front-End Developer do?
A Front-End Developer builds the part of a web application people see and use, turning designs and data into interfaces that work across browsers, devices, and abilities.
Hire for the quality of the interfaces the developer has shipped, not only the frameworks they list. Accessibility, performance, and testing separate strong front-end engineers from the broader pool.
Responsibilities
The role covers building components and pages, managing application state, integrating APIs, writing tests, meeting accessibility and performance standards, and collaborating with designers, product managers, and back-end engineers.
Build the interface
Turn designs into reusable components and pages using React, Angular, or Vue with TypeScript.
Manage state, routing, forms, and API integration so the interface behaves correctly with real data.
Make it accessible and fast
Use semantic HTML, keyboard support, and ARIA correctly so people with disabilities can use the product.
Measure and improve load times, rendering, and responsiveness on real devices and networks.
Keep it maintainable
Write unit, component, and end-to-end tests, review code, and contribute to shared components and standards.
Keep the codebase understandable as features and team members are added.
What product context is the developer joining?
The same title covers very different work. Before writing the description, define what the developer will inherit.
- Framework and codebase. React, Angular, or Vue, the version, and whether the code is modern TypeScript or an older JavaScript application that needs modernization.
- Product type. A public website, a customer-facing application, an internal tool, or a data-heavy dashboard.
- Design maturity. Whether a design system and component library already exist or need to be built.
- Quality bar. Accessibility obligations, performance targets, browser support, and testing expectations.
- Team structure. A dedicated front-end team, a cross-functional product squad, or a small team where front-end developers also touch the back end.
A developer who will extend a mature design system in a large product team needs different strengths from one who will modernize an older Angular application on their own.