Matthijs is member of several Advisory Boards, Expert Groups and Scientific Committees. These include:

• Expert Group on 'Fair and Sustainable Economy', EU-JRC Directorate B
• Advisory Board for the Dutch Knowledge and Innovation Agenda on 'Societal Earning Capacity' / 'Maatschappelijk Verdienvermogen'
• Advisory Board for the Swedish Strategic Innovation Programme consortium on 'Sustainable Governance'
• Scientific Commitee of the RTI Policy conferences REvaluation 2022 and 2024
• Expert Group on Expert Committee on Evaluation of Systemic Innovation and Transition-oriented Policies (2022)

Besides his academic affiliation, Matthijs holds a position as Principal Scientist at Dialogic (Utrecht, NL). Dialogic is a 30fte private research firm highly active in the field of evaluations and strategic studies on science and innovation policy. In his role as the firm’s Principal Scientist, Matthijs oversees many of the studies related to novel methods for analyzing and developing new generations of innovation policies. Often acting as project leader, he has (co-)authored about 85 studies for clients like the Dutch Ministry of Economic Affairs and Climate Policy, Ministry of Education Culture and Science, Ministry of Infrastructure and Water management, Rijkswaterstaat, the European Commission and the OECD. He's also been involved in policy projects in Australia, Greece, Sweden and several other countries.

Matthijs is/was involved in the following studies (selection):

• Evaluation of the Dutch Energy Innovation Policy mix (ongoing)
• Evaluation of the Dutch 'Toekomstfonds' Future Fund (ongoing)
• Evaluation of Invest-NL (ongoing)
• Evaluation of the NWO-TTW Perspectief programme (ongoing)
• Analysis of Fieldlabs in the Zuid-Holland Province (2022)
• Assessment of Groeifonds proposals (2022)
• Development of an ex-ante evaluation framework for ‘key enabling methods’ experiments (2022)
• Assessment of project proposals for National Growth Fund (2021)
• Analysis of mission-oriented innovation systems for 'Aviation in Transition' (2021)
• Evaluation of the PPS allowance scheme 2016-2020 (2021)
• Assessment of the Dutch investment climate (2021)
• Development of a monitoring approach for mission innovation projects and human capital development (2021)
• Explorative analysis of the Mission-oriented Topsector and Innovation policy (2021)
• Evaluation of the Dutch 'Smart Industry' program (2021)
• Development of a monitoring framework for the Dutch regional 'SME Deals' (2021)
• Comparison of 'first come first serve' and competitive bidding in Energy Innovation policies (2020)
• Analysis of Dutch research and innovation ecosystems (2020)
• Development of the ‘Toolbox for Evaluations’ for Ministry of Finance (2020)
• Methodology for evaluation of Australian Industrial Growth Centre Initiative (2020)
• Evaluation of participation Ministry of Infrastructure and Watermanagement in Topsector Logistics (2020)
• Country reviews JRC project on ‘Industrial Transitions in Lagging Regions’ (2020)
• JRC technical report on managing industrial transitions (2020)
• Evaluation of the ‘GO’ Guaranteed Business Financing regulation (2020)
• Evaluation of Green Technologies Programme (2020)
• Evaluation of Innovative Procurement Programme (2019)
• Development Innovation Agenda 2.0 Rijkswaterstaat (2019)
• Research and Innovation Observatory – Country Report for the Netherlands (European Commission JRC, 2019)
• Analysis of location factors for the Dutch high tech industry, for FME (2019)
• Evaluation of knowledge management in the Wadden domain (2019)
• Evaluation of policy experiment with Innovation Performance Contracts (2019)
• Evaluation of WBSO tax credit scheme (2019)
• Evaluation of SEED Capital, Growth facility, Dutch Venture Initiative (2019)
• Evaluation of Valorisation Programme (2018)
• Development and evaluation of two service innovation policy experiments (2018)
• ‘Launching Customership’ possibilities at the Ministry of Infrastructure and Environment (2017)
• Study on the potential of servitization and other forms of product-service provision for EU SMEs (with Technopolis and Cambridge Service Alliance). Commissioned by European Commission, EASME-GROW.
• Evaluation of Energy Innovation Policies (2017)
• Evaluation of SBIR (2017)
• Evaluation of Topsector Approach (2017)
• Evaluation of TKI Allowance for public-private R&D projects (2016)
• Research and Innovation Observatory – Country Report for the Netherlands (European Commission JRC-IPTS, 2014, 2015 and 2016)
• Evaluation of Innovatiebox 2010-2012 (2015)
• Evaluation policy mix for innovation and entrepreneurship (2015)
• Evaluation of ‘Designing a New Economy’ Programme (2015)
• Evaluation of Syntens (2013)
• Evaluation of science convenant Flemish government and Vlerick Leuven Gent Management school (2012)
• Evaluation of Innovation Programmes (2012)