Contact us

I'm interested in:

Hearing more about your services

Getting an initial offer

Business Finland 5000€ innovation voucher

Pentagon Design Oy

Vilhonvuorenkatu 11 A 16 (6th floor)
00500 Helsinki


+358 10 843 5500

VAT number : FI10492336


If you are interested in a specific service area, please contact the following people:

Virva Haltsonen, Strategy & Insights
+ 358 040 524 8151

Heidi Hyytiäinen, Innovation & New Value Concepts
+358 44 344 8554

Sauli Suomela, Design & Branding
+358 50 514 8934

Check out our team

Invoicing details

Online invoices:

We prefer to receive all partner and contractor invoices electronically.
Our electronic invoice addresses are:


OpusCapita Solutions Oy (E204503)

EDI= 003710492336

The email address for PDF invoices is:
Please make sure that the attached file(s) are always PDF and our name and address is found on the invoice.

Paper invoices:

Pentagon Design Oy (OpusCapita skannauspalvelu)
PL 23343


Vilhonvuorenkatu 11 A 16 (6th floor)
00500 Helsinki

+358 10 843 5500

For general enquiries, please drop us a line at info(at)


Our beautiful and inspirational 5th floor space is available for renting for meetings and events.

Check our space on Venuu

Rent working space



Information on how to join our team is available on our Careers page.

Check our open positions

Meet the team

Read more