What is a good company for doing 301 redirects on a website?

[Tommy]

Hi Joe,
You don't need any company's help to get 301 redirect set up on your site. If your company manages the site yourself, in the Content Management System (CMS), depending on what you using, you should be able to 301 redirect the pages yourself.
If you are working with another agency to host/create/manage your site, you can reach out to that agency to do it. You should be able to do everything through the CMS.

Side Note - If you are using Wordpress as CMS as a lot of people are using, you can download a redirect plugin to redirect your pages or if you are already using a SEO plugin, that should do the job too.