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Siina Jokinen has worked at various companies throughout their career. Siina started at Nokia in 2004 as a Summer Trainee. Siina then moved on to Tampere University of Technology in 2005, where they worked as an Academic Education Coordinator until 2007. In 2008, they joined Idean as an Interaction Designer and later became a Senior Designer. Siina then transitioned to M-Files Corporation in 2011, where they held several roles including Key Account Manager, Enterprise Account Manager, and Sales Director for Key Accounts in Finland. Siina'swork experience at M-Files continues to the present day. Overall, Siina has a diverse background in sales, design, and education coordination.

Siina Jokinen's education history includes the following:

- In 1998-2004, they attended Tampere University of Technology and obtained a Master of Science (M.Sc) degree in Information Technology. Siina'sfield of study focused on Software Engineering.

- In 2007, they participated in the OHKO (Ohjelmistoprojektin vetäjien koulutusohjelma) program at Tampere University of Technology. The exact duration of this program is not specified.

- In January 2012, Siina Jokinen obtained the certification of M-Files Certified User from M-Files Corporation. The details of this certification are not provided beyond the institution and the month/year of obtaining it.

This information comprehensively summarizes Siina Jokinen's education history based on the given chronological information, without making any assumptions beyond what is provided.