Technical writing gives little space for creativity and is commonly used for laying out a company's procedures or giving very specific or educational information to their audience. This content includes manuals, guides, product instructions, etc. In most instances, you will be given the information you need to use, and your job will be to transform it into engaging and easily-read content.
A degree in English or a similar field would be beneficial but not absolutely necessary. A history writing technical copies, on the other hand, is essential to attract recruiters. Take a look at this impressive technical writer’s resume.