Workshop Co-Chair for the 7th International Workshop on Human Factors in Modeling / Modeling of Human Factors (HuFaMo 2023), co-located with the ACM/IEEE 26th International Conference on Model Driven Engineering Languages and Systems (MODELS 2023), 1-3 October 2023, Västerås, Sweden.

Workshop Co-Chair for the 6th International Workshop on Human Factors in Modeling / Modeling of Human Factors (HuFaMo 2022), co-located with the ACM/IEEE 25th International Conference on Model Driven Engineering Languages and Systems (MODELS 2022), 23-25 October 2022, Montreal, Canada.

Workshop Co-Chair for the 5th International Workshop on Human Factors in Modeling / Modeling of Human Factors (HuFaMo 2021), co-located with the ACM/IEEE 24th International Conference on Model Driven Engineering Languages and Systems (MODELS 2021), 10 and 12 October 2021, Virtual Event (originally in Fukuoka, Japan).

Workshop Co-Chair of the 4th International Workshop on Human Factors in Modeling (HuFaMo 2019), co-located with the ACM/IEEE 22nd International Conference on Model Driven Engineering Languages and Systems (MODELS 2019), 16 September, Munich, Germany.

Workshop Co-Chair for the 4th International Workshop on Human Factors in Software Development Processes (HUFO 2019), co-located with the 20th International Conference on Product-Focused Software Process Improvement (PROFES 2019), November 27-29, Barcelona, Spain.

Workshop Co-Chair for the 4th International Workshop on Human Factors in Modeling (HuFaMo 2018), co-located with the ACM/IEEE 21st International Conference on Model Driven Engineering Languages and Systems (MODELS 2018), 14-16 October 2018, Copenhagen, Denmark.

Workshop Co-Chair for the 3rd International Workshop on Human Factors in Modeling (HuFaMo 2017), co-located with the ACM/IEEE 21st International Conference on Model Driven Engineering Languages and Systems (MODELS 2017), 17-22 September 2017, Austin-TX, USA.

Workshop Co-Chair for the 3rd International Workshop on Human Factors in Software Development Processes (HuFo 2017), co-located with the 18th International Conference on Product-Focused Software Process Improvement (PROFES 2017), November 29 - December 01, 2017, Innsbruck, Austria.

Workshop Co-Chair for the 2nd International Workshop on Human Factors in Software Development Processes (HuFo 2016), co-located with the 17th International Conference on Product-Focused Software Process Improvement (PROFES 2016), 22-24 November 2016, Trondheim, Norway.

Workshop Co-Chair of the 1st International Workshop on Human Factors in Software Development Processes (HuFo 2015), co-located with 16th International Conference on Product-Focused Software Process Improvement (PROFES 2015), Bozen-Bolzano, Italy, December 2, 2015.

Organizing Committee Member of the 2013 AADL (Architecture Analysis and Design Language) User Day & Standard Committee Meeting, Valencia, Spain, February 4-7, 2013, Promoted by the Society of Automotive Engineers (SAE) and the Software Engineering Institute (SEI) at Carnegie Mellon University, USA.

Program Co-chair of the 3rd International Workshop on Experiences and Empirical Studies in Software Modelling (EESSMod 2013), co-located with the ACM/IEEE 16th International Conference on Model Driven Engineering Languages and Systems (MODELS 2013), Sept. 29th - Oct. 4th, 2013 – Miami, USA.

Program Co-chair of the 2nd International Workshop on Experiences and Empirical Studies in Software Modelling (EESSMod 2012), co-located with the ACM/IEEE 15th International Conference on Model Driven Engineering Languages and Systems (MODELS 2012), Sept. 30th - Oct. 5th, 2012 – Innsbruck, Austria.

Program Co-chair of the 2nd International Workshop on the Interplay between User Experience and Software Development (I-UxSED 2012), co-located with the 7th Nordic Conference on Human-Computer Interaction (NordiCHI 2012), October 14th-17th, Copenhagen, Denmark.

Program Co-chair of the 1st International Workshop on Experiences and Empirical Studies in Software Modelling (EESSMod 2011), co-located with the ACM/IEEE 14th International Conference on Model Driven Engineering Languages and Systems (MODELS 2011), Wellington, New Zealand, October 17, 2011.

Program Co-chair of the 1st International Workshop on 1st International Workshop on Quantitative Methods in Software Product Line Engineering (QMSPLE 2011), co-located with the 15th International Software Product Line Conference (SPLC 2011), Munich, Germany, August 26, 2011.

Program Co-chair of the 2nd International Workshop on Quality in Web Engineering (QWE 2011), co-located with the 11th International Conference on Web Engineering (ICWE 2011), Paphos, Cyprus, June 20-21, 2011.

Program Co-chair of the International Workshop on the Interplay Between User Experience and Software Development (I-UxSED 2010), co-located with the 6th Nordic Conference on Human-Computer Interaction (NordiCHI 2010), Reykjavik, Iceland, October 16-20, 2010.

Program Co-chair of the 1st International Workshop on Quality in Web Engineering (QWE 2010), co-located with the 10th International Conference on Web Engineering (ICWE 2010), Vienna, Austria, July 5 - 9, 2010.

Program Co-chair of the 2nd International Workshop on the Interplay Between Usability Evaluation and Software Development (I-USED 2009), co-located with the 12th IFIP TC13 Conference in Human-Computer Interaction (INTERACT 2009) Uppsala, Sweden, August 24.

Program Co-chair of the 2nd International Workshop on Web Usability and Accessibility (IWWUA 2008), co-located with the 9th International Conference on Web Information Systems Engineering (WISE 2008), September 1, Auckland, New Zealand.

Program Co-chair of the International Workshop on the Interplay Between Usability Evaluation and Software Development (I-USED 2008), co-located with the 2nd Conference on Human-Centred Software Engineering (HCSE 2008), September 24, Pisa, Italy.

Program Co-chair of the 1st International Workshop on Web Usability and Accessibility (IWWUA 2007), co-located with the 8th International Conference on Web Information Systems Engineering (WISE 2007), December 3, Nancy, France.

Program Co-chair of the International Workshop on Usability of User Interfaces: From Monomodal to Multimodal (IWUUI 2007), September 3-4, Lancaster, UK– co-located with the 22nd International Conference on Human-Computer Interaction (HCI 2007), Lancaster UK.

Organizing Committee Chair of the 2nd International Workshop on Software Quality and Estimation (IWSQE'03), Denia, Spain, May 2003.

Organizing committee member of the 1st International Workshop on Software Quality and Estimation (IWSQE'02), Denia, Spain, September 2002.

Organizing committee member of the 5th Ibero-american Workshop on Requirements Engineering and Software Environments (IDEAS'2002), La Habana, Cuba, April 2002.

Organizing committee member of the International Workshop on Conceptual Modeling of User Interfaces (TIMIU'2002), Spain, March 2002.

Organizing committee member of the International Workshop on Web Oriented Software Technology (IWWOST’02), co-located with the ECOOP 2002, Málaga, Spain.

Organizing committee member of the International Workshop on Web Oriented Software Technology (IWWOST’01), Valencia, Spain, June 2001.