You are always welcome to send an unsolicited application. When we do have openings, you may also find it on our career page here: https://www.rws.com/about/careers/
That page also have a form at the bottom where you can contact us and write a message.
Our "big" languages such as French, Italian, German, Spanish are fairly covered in-house at the moment, but "smaller" languages are in need.
For in-house positions, if your native language is Norwegian, Hungarian, Croatian, Romanian, Czech, Swedish, Danish, Finnish, Greek, Slovak, Slovenian - we would love to hear from you to see if we can work with you somehow.
If you are native Icelandic, Estonian, Latvian, Lithuanian, Maltese - we are in need on a freelancer basis, but we have no in-country Language Office for those languages.