Hi, we can develop theming on Drupal for you. We are a team or Drupal developers from Ukraine, our experience in Drupal is 4+ years. We can provide references, as long as required. Please, let me have a look at the current version, you've mentioned, this is the only way to offer you something specific. We usually use Bootstrap, but we can work with another base if you prefer so.
Please, share some details of the project and the best way to contact you to discuss the project.
Thanks,
Max