Visit a TE Office to register as a jobseeker. For the Hämeenlinna TE Office contact details, see here.

When you visit the TE Office for the first time, bring with you

• your passport or a certificate of your passport being held by the police
• residence permit
• an extract from the Population Information System from a Local Register Office, a Kela card or other document showing that you have a Finnish personal identity code
• certificates of employment and education translated into Finnish, Swedish or English.

Source: TE Office