A Decade at TNO-ESI: My Journey to Principal Scientist at TNO

Ten years after joining TNO-ESI, I am proud to announce that I have been promoted to Principal Scientist for Model-based System Performance Engineering.

A Principal Scientist at TNO is a senior scientific leader who combines deep expertise with the ability to shape research directions and drive impact. They act as a bridge between science, industry, and strategic partners, ensuring that cutting-edge research is translated into real-world solutions. Principal Scientists are internationally recognized in their field, lead complex and high-impact research programs, and contribute to TNO’s long-term scientific and strategic agenda. In addition, they serve as role models within the organization, mentoring colleagues, inspiring others, and helping develop the next generation of scientists.

My positioning for the role built on a combination of three key pillars: (1) fundamental research, enabled by my appointment as Endowed Professor at the University of Amsterdam; (2) applied research at TNO-ESI in collaboration with industry partners such as Thales, Philips, and ASML; and (3) science management, through my roles as TNO-ESI Science Lead and Science and Technology Manager at unit ICT, Strategy & Policy (ISP). Through this combination, I have developed a strong overview of the innovation chain across technological readiness levels, as well as a clear understanding of how science connects with market and operations. This has enabled me to shape scientific programs and connect academia, research organizations, and industry within my field and beyond.

I am grateful for the recognition expressed in the announcement on the ESI website and look forward to continue my work in this role. Lastly, I would like to take this opportunity to thank past and present peers, managers, and directors that supported me during my journey and believed in me, even when I doubted.

Excited to share that our NWO OTP project DESIRE has been accepted!

Together with ASML, University of Amsterdam, Leiden University, and TNO-ESI, we are starting a new research project on design-space exploration for complex distributed cyber-physical systems. Thank you ASML and TNO-ESI for contributing to the project, and to Philips, Canon Production Printing, Thales, Vanderlande, Eindhoven University of Technology, and University of Twente for joining the user committee.

Design-space Exploration for Complex Distributed Cyber-Physical Systems (DESIRE) builds on our earlier work in DSE 2.0, extending it toward an advanced holistic and automated approach to exploring alternative hardware platforms, software changes, and mappings — helping engineers answer critical what-if questions on performance and cost in increasingly complex systems. In particular, we will focus on:
1) Capturing realistic system behavior from traces while scaling to industrial systems with partial observability and complex environments
2) Bridging software and hardware characterization to enable model-based exploration of performance across heterogeneous platforms.
3) Handling extremely large, heterogeneous, multi-objective design spaces.

At the same time, it’s great to see how earlier results are already being picked up, matured, and experimented with in practice by TNO-ESI and ASML, closing the loop between academic research and industrial impact.

Looking forward to this next step in the collaboration!

The announcement of the grant from NWO is available here.

Reflections on a PhD Defense: Real-Time Guarantees in the Edge–Cloud Continuum

Today, I served on the PhD committee of Nasim Samimi, who defended her dissertation titled “Edge-Cloud-Assisted Real-Time Cyber-Physical Systems.” This work addresses the challenge of providing predictable real-time guarantees for cyber-physical systems deployed across the edge–cloud continuum. As CPS increasingly rely on distributed, shared, and dynamic infrastructures, traditional design-time schedulability analysis becomes insufficient. The dissertation proposes a set of online admission control, scheduling, and orchestration techniques that provide per-job deadline guarantees and controlled service degradation under bursty workloads. The main contributions span formal job-level admission control for multicore servers, weakly-hard real-time guarantees using (M,K)-firmness, and practical deployment mechanisms for real-time workloads in Kubernetes-based edge–cloud platforms. Together, these contributions aim to bridge the gap between real-time theory and modern cloud-native practice.

I very much enjoyed reading this dissertation, as it tackles an important problem at the intersection of real-time systems, cyber-physical systems, and edge–cloud computing. I particularly appreciate the combination of solid theoretical foundations in the early chapters with increasingly practical contributions in the later chapters. A great example of this is the KubeDeadline technology, which extends Kubernetes to schedule Linux containers according to the well-known SCHED_DEADLINE policy and guarantee them a portion of CPU bandwidth with bounded latency. This work successfully translates classic real-time scheduling concepts into modern edge-cloud software architectures.

The defense went well, and shortly after the beadle pronounced the end of the defense (“Hora est!”), Nasim became Dr. Samimi. Congratulations on this achievement! It was a pleasure to serve on this committee, and I wish Nasim all the best in her future career.