Industry Speakers
On Wednesday 25/03/2026 REFSQ 2026 participants will have an opportunity to listen to the presentations of practitioners sharing their knowledge and experience.
Anna Czaplicka, Dariusz Walczak (BitByBit Sp. z o.o.)
Bridging Requirements and Validation: Automated Scenario Validation in Monitoring and Control software for Space Systems
Abstract: The success of space missions depends on the flawless operation of complex ground and flight control systems, where thorough validation is essential. This presentation explores how UI-level Selenium tests developed within an extensive scenario-driven framework can serve as a critical link between requirements engineering and validation activities.
Drawing from practical experience collaborating with ESA (European Space Agency), we will examine how automated test scenarios were developed to validate operational requirements. The talk will cover scenario modeling, test structuring, and systematic traceability methods that enable these automated tests to accurately reflect user intent, express business rules, and provide continuous feedback on requirement completeness and system behavior.
The presentation will discuss the bidirectional relationship between requirements and automated tests, including methods for mapping scenarios to test suites. We will also explore the organizational impact of treating automated tests as a shared, evolving source of truth.
BIO:
Anna Czaplicka is the leader of the Automated Software Testing Team at BitByBit, specializing in spacecraft monitoring and control systems such as EGS-CC, MCS-CC, and Pulse.
Dariusz Walczak is the founder and managing director of BitByBit, where he leads the space division and coordinates all space-related projects within the company. With over 20 years of experience in IT and nearly a decade in space domains, Dariusz has established himself as a distinguished leader in the industry.
Piotr Hołubowicz (Google)
Building Products Users Trust: A Practical Guide to Reliability
Abstract: How do you ensure a product used by millions remains reliable and performant? At Google, Site Reliability Engineering (SRE) principles provide a framework for building and operating services at scale. This talk will offer a peek behind the scenes, using Google Photos as an example, to illustrate how we approach and measure the quality of service. We’ll explore the journey from traditional server-centric monitoring to methods that better reflect the actual user experience. Discover practical strategies and lessons learned at Google for engineering more robust and dependable products, and gain insights into evolving your own practices to better understand system health and user satisfaction.
BIO:
Piotr is a Site Reliability Engineer at Google. He has been a member of the Health and Photos SRE teams, focusing on observability, incident response and capacity management. He is a Poznań University of Technology graduate. Outside of work, Piotr loves to run - especially off the path with a compass and a map in his hands.
LinkedIn: https://www.linkedin.com/in/piotr-hołubowicz-76607281
Jacek Kobusiński, PhD (Nexus Sp. z o.o.)
The Art of the Impossible: Managing Requirements in a World of Unreal Deadlines and Indecisive users.
Abstract: Although hospital-based patient care appears to be a highly regulated and demanding domain, the development of Hospital Information System (HIS) software is far from straightforward. Using real-life examples, this talk highlights the challenges that an average software producer encounters in this market. While no universal solution exists, the presentation will describe how, in practice, these challenges can be approached—sometimes more effectively, sometimes less—based on day-to-day experience.
BIO: With more than 25 years of experience in developing Hospital Information Systems, Jacek Kobusiński has built a career deeply rooted in healthcare technology. Over the course of his professional path, he has held a wide range of roles, including programmer, development team lead, director of customer support, and ultimately Vice President responsible for product development and administration at Nexus Polska, one of Poland’s leading HIS providers. Along the way he completed a PhD in the area of distributed systems. He also devoted many years to academia, sharing his expertise as a researcher and lecturer at the Poznań University of Technology and the Poznań University of Medical Sciences..
LinkedIn: https://www.linkedin.com/in/jacek-kobusiński-37390018/
The full list of speakers will be announced soon!
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