Cees Michielsen

Requirements Engineer | Trainer at High Tech Institute | Co-owner, Pace Tech 

Cees Michielsen is a Dutch systems and requirements engineering specialist whose career spans more than three decades of software development, process architecture and systems engineering. He is co-owner of Pace Tech in Eindhoven, creator of the IMPULS3 systems engineering method and a trainer at High Tech Institute, where he teaches the System Requirements Engineering training and gives the System Requirements Engineering Awareness workshop. 

His work addresses one of the most persistent problems in product development: keeping requirements complete, consistent and traceable as they cascade from stakeholder needs through successive abstraction layers down to component –level specifications. For more than thirty years, he has built and rolled out requirements engineering programs at companies including Philips, Océ, DAF Trucks, Punch Powertrain, Vanderlande, Eurocontrol, ProRail, Rijkswaterstaat and ASML. 

Michielsen began his career in 1986 at Philips EMT in Eindhoven, the team that later became Assembléon and ultimately Kulicke & Soffa, working on SMD component placement robots for automotive customers including Ford, GM and Chrysler. His entry point was technical informatics, but Philips quickly reshaped his trajectory toward cross-disciplinary systems thinking – a shift that defined the next decades. He progressed through roles as software developer, process improvement specialist, quality assurance manager, project leader, product creation process manager and systems engineer before settling on requirements engineering as his core discipline. 

At DAF Trucks, he built a complete requirements engineering process in three years, training hundreds of engineers. The experience –including a subsequent assignment at Daimler – taught him that implementation succeeds or fails on organizational design as much as on technical methods. 

Through his consultancy, Michielsen developed the IMPULS3 systems engineering method, which focuses on the interaction between requirements and design and on managing the distinctions, dependencies and coherence between datasets across the full product information structure. As of 2024, he has been transitioning his activities to Pace Tech, a new venture he co-founded with his son Paul. 

A recurring theme in his teaching is what Michielsen calls the cascade: ensuring that information flows without loss from the highest stakeholder level through every abstraction layer to the lowest component specification, and that every requirement at every level can be fully justified back to its origin. He equally stresses the importance of recording not just decisions but the decision-making process itself: Without that record, he argues, every design change forces engineers to reconstruct the entire reasoning from scratch. 

Selected publications 

Fischer, J.W.; Michielsen, C.; Rebel, M.; Haße, A. “PLM-integriertes Anforderungsmanagement: SITIO.” Zeitschrift für wirtschaftlichen Fabrikbetrieb 107 (3), 163––167 (2012). DOI: 10.3139/104.110717 

Rebel, M.; Fischer, J.W.; Haße, A.; Michielsen, C. “Enhancing interpretation  – Quality of requirements using PLM integrated requirements  – Communication in cross company development processes” (book chapter, 2013). 

Haße, A.; Michielsen, C. “The missing link – between requirements and design.” CSDM Posters 2013, pp. 59-74. CEUR-WS Vol-1085. 

Michielsen, C.; Haße, A. “Design decisions – the missing link.” Tag des Systems Engineering 2014. Affiliation: R&D Studio BV, High Tech Campus 9, 5656 AE Eindhoven. 

At High Tech Institute, Cees Michielsen teaches: 

• System Requirements Engineering–a two-day training for engineers working in multi-disciplinary projects. 
• System Requirements Engineering Awareness–a half-day in-company session intended for architects, planners, testers, integrators, line management and product management who need a working understanding of the discipline without the full course. 

What distinguishes his teaching is the direct link between the IMPULS3 method and the concrete implementation problems he has encountered across different sectors. His method teaches participants how to structure and organize their data throughout the whole product life cycle, without losing information during the transformations of requirements into design and derived requirements. 

Cees Michielsen is co-owner of Pace Tech and a trainer at High Tech Institute, where he has taught system requirements engineering since the institute’s founding years. He studied technical informatics at Delft University of Technology (TU Delft) and is the creator of the IMPULS3 systems engineering method.