Management Team
Johanna Valkama
General Counsel
Member of the Management Team since 2025
Born 1980
Finnish citizen
Master of Laws
Work history
- General Councel at Spinnova Plc since 2025
- Legal Director at Spinnova Plc between 2024 and 2025
- Senior Legal Counsel at Hologic Inc. (Mobidiag Oy) between 2020 and 2024
- Legal Business Partner at Wiidare Oy during 2020
- Legal Advisor at Seasoned between 2018 and 2019
- Legal Counsel at Kesko Oyj between 2012 and 2017
- Various legal counsel roles at Deloitte & Touche Oy between 2006 and 2012
Janne Poranen
Chief Executive Officer from 2025
Chair and Member of the Board since 2022
Co-founder of the company
Born 1972
PhD in Physics
Finnish citizen
Not independent of the company, independent of major shareholders
Company shareholding: 2 663 030 shares and 8 000 2020 B options (Each 2020 B option entitles to subscribe to 30 shares)
Work history
- CEO at Spinnova Plc from 2025-
- CEO at Spinnova Plc between 2014 and 2022
- Principal Scientist at VTT Technical Research Centre of Finland Ltd between 2014 and 2015
- Head of Research Area, Fibres and Biobased Materials at VTT Technical Research Centre of Finland Ltd during 2014
- Technology Manager at VTT Technical Research Centre of Finland Ltd between 2006 and 2013
- Key Account Manager at VTT Technical Research Centre of Finland Ltd during 2006
- Group Manager at VTT Technical Research Centre of Finland Ltd between 2005 and 2006
- Deputy Group Manager at VTT Technical Research Centre of Finland Ltd between 2002 and 2004
- Team Leader, VTT Processes, Fluid Dynamics Team at VTT Technical Research Centre of Finland Ltd during 2002
- Senior Researcher, VTT Processes at VTT Technical Research Centre of Finland Ltd between 2001 and 2002
- Expatriate, VTT Processes (University of Maine, Department of Chemical Engineering) at VTT Technical Research Centre of Finland Ltd during 2001
- Research, VTT Energy at VTT Technical Research Centre of Finland Ltd between 1999 and 2001
- Researcher positions at the University of Jyväskylä during 1997
Santeri Heinonen
Chief Finance (CFO) and People Officer
Member of the Management Team since 2023
Born 1974
Finnish citizen
Master of Science (Economics)
Company shareholding: 15 648 shares
Work experience:
- Chief Finance (CFO) and People Officer, 2025
- Chief HR Officer, Spinnova Oyj, 2023-2025
- Senior Manager, Global Talent Development, Valmet Oyj, 2013-2023
- Manager, Compensation & Benefits, Metso Shared Services Oy, 2009-2012
- HR Controller, Metso Paper Oy, 2005-2009
- Business accounting, Global Service Operations, Metso Paper Oy, 2003-2004
- Various HR roles, Metso Paper Oy, 2000-2003
Shahriare Mahmood
Chief Product and Sustainability Officer
Member of the Management Team since 2021
Born 1976
Finnish and Bangladeshi citizen
Doctor of Science (Tech)
Company shareholding: 5 968 shares, 3 000 2018 options, 55 000 2022 A3 options and 55 000 2022 B3 options (each 2018 option entitles to subscribe to 30 shares and each 2022 option entitles to subscribe to 1 share)
Work history
- R&D and Sustainability Director, Reima, 2016-2020
- Production Manager, Environmental and REACH Coordinator, MASI Company Oy, 2009-2016
- Production Manager, MASI Company AS, 2007-2009
- Production Manager, Sangar Valga Vabrik AS, (Estonia), 2004-2006
- Factory Manager, Opex Group, Kanchpur, Dhaka (Bangladesh), 2003-2004
- Project Manager, Unique Group, Gazipur, Dhaka (Bangladesh), 2002–2003
- Sales Engineer, Greenmac International Pte Ltd, Dhaka (Bangladesh), 2001-2002
- Production Engineer, Imperial Group, Hariharpara, Fatullah, Narayanganj (Bangladesh), 1999-2001
Juha Salmela
Chief Technology Officer, Co-founder
Member of the Management Team since 2014
Member of the Board of Directors 2014-2024
Born 1973
Finnish citizen
Master of Science degree
Not independent of the company, independent of major shareholders
Company shareholding: 1 972 132 shares and 8 000 2020 B options (each 2020 B option entitles to subscribe to 30 shares)
Work history
- Researcher, Team Manager, and Principal Investigator at VTT Technical Research Centre of Finland Ltd between 1997 and 2014
- Expat at the University of British Columbia in Canada between 2004 and 2005