About the Authors

Joost Visser is Head of Research at the Software Improvement Group (SIG). In this role, he is responsible for the science behind the methods and tools that SIG offers to measure and master software. Joost also holds a position as professor of Large-Scale Software Systems at Radboud University Nijmegen. He has obtained his PhD in Computer Science from the University of Amsterdam and has published over 100 papers on topics such as generic programming, program transformation, green computing, software quality, and software evolution. Joost considers software engineering a socio-technical discipline, and he is convinced that software measurement is essential for development teams and product owners to thrive.

Sylvan Rigal has worked as a software quality consultant at SIG since 2011 and has advised clients on managing their IT since 2008. He helps clients achieve lower software maintenance costs and enhanced security by prioritizing improvements in software design and development processes. He holds an MSc in International Business from Maastricht University, The Netherlands. As an active member of SIG’s software security team, Sylvan trains consultants on analyzing software security risks. When he is not assessing the technical health of software, he is training in Brazilian jiu-jitsu, enjoying Amsterdam and its restaurants, or traveling through Asia (approximately in that order).

Gijs Wijnholds joined SIG in 2015 as a software quality consultant in Public Administration. He helps clients get in control of their software projects by advising them on development processes and translating technical risks into strategic decisions. Gijs holds a BSc in Artificial Intelligence from Utrecht University and an MSc degree in Logic from the University of Amsterdam. He is an expert on Haskell and mathematical linguistics.

Zeeger Lubsen started consulting for SIG in 2008 as an all-around expert in software engineering and software quality and is now a senior consultant. Having worked as a web developer during his MSc study at the Delft University of Technology, he found great revelation in learning about how to build high-quality software. In his role as a consultant, he now helps both nontechnical managers and development teams to understand and grasp software. He finds that developing software is a creative and cultural activity, but also one that needs clear and objective guardrails to achieve realistic goals.