Classifieds / Trying to fill many (English speaking) job vacancies in Suszec, Poland [2]

We're a Global tech startup company, with a successful programming and engineering team in our Suszec office.

We are expending that office and we need to fill the following job vacancies

Customer service agents
Social media marketing export
SEO export
2D and 3D Designers,
PR experts
Copywriters
Etc.

Where is the best place to find such talent?

We also hire interns for some related jobs.

Can anyone recommend a good (English speaking) recruitment agency in or around Suszec?