Heidi Tiihonen has extensive experience in financial management and control, currently serving as Business Controller and previously as Finance Manager and Financial Controller at Instru Optiikka Oy since April 2021. Prior roles include Financial Controller at Vallila Interior from August 2016 to April 2021 and Controller at Plan International Finland from February 2010 to August 2016, focusing on internal reporting and process development. Earlier experience includes positions at Microsoft as a Controller and Accountant at Toimistopalvelu Ulla Mursula, along with internship roles at ABB. Heidi Tiihonen holds a Master's degree in Finance and Accounting from the University of Vaasa, earned in 2002.