While not absolutely necessary, a brief company description can be beneficial on a resume, especially when your experience includes roles at lesser-known companies, start-ups, or specific industry niches. It can help provide context about the scope and scale of your responsibilities. It may also highlight the relevance of your experience if the company operates in the same industry as the jobs you're applying to.

However, if you worked for well-known companies, it might not be necessary to include a description since recruiters are likely to be familiar with them already. In these cases, it may be better to use the space to elaborate more on your roles, responsibilities, and achievements. Remember, your resume should ideally be concise and fit within one or two pages, so prioritize information that adds the most value to your application.

It's also important to note that company descriptions should be brief (one to two lines at most) and should focus on details like the company's industry, size (number of employees or revenue, if impressive), and the products or services it offers. For example, a company description could be: "ABC Company - A mid-sized software development firm specializing in customized ERP solutions for the healthcare industry."