Hiring a full-stack developer is a good option when you need to turn your business solution into a competitive prototype, create a website from scratch or build and maintain an application, including API integrations, performance optimization etc. Specifically, a front-end developer can make your software product or service more user-friendly, and a back-end developer is responsible for robust databases and responsiveness. In case you have no designer in your existing team, then you will likely need to hire both a designer and a developer.
Analyze your project requirements to decide what kind of web developer to hire and craft the job description which reflects your demand.
If you are looking to strengthen your team with specialists proficient in certain technologies, clarify this right in the job title, like React developers or Node.js engineers.