Bertil Chapuis is a professor and seasoned software engineer with 11 years of experience building and teaching scalable, location-aware and distributed systems from Switzerland. He blends academic rigor (PhD in Information Systems) with hands-on engineering across startups and research labs, co-founding Astrocast and architecting backend and cloud deployments at scale. His work spans web technologies, CI/CD and Kubernetes automation, and large-scale evaluations—having automated grading for 600+ students and run distributed experiments on clusters of up to 200 VMs. An active open-source contributor, he has extended geospatial capabilities in the high-profile Apache Calcite project, integrating JTS and advanced spatial functions. Colleagues know him for turning complex research into practical systems and for teaching students to experiment, design and build reliable software.
11 years of coding experience
12 years of employment as a software developer
PhD, Information Systems, PhD, Information Systems at University of Lausanne
BS, Bachelor, communication-engineering-management (comem+), BS, Bachelor, communication-engineering-management (comem+) at HEIG-VD
MPT, Maturité Professionnel Technique, MPT, Maturité Professionnel Technique at Centre professionnel du Nord vaudois
Contributions:30 reviews, 11 commits, 22 PRs in 3 months
Contributions summary:Bertil primarily focused on implementing and extending spatial type functions within the Apache Calcite project. Their contributions involved adding support for new spatial functions like ST_CoveredBy, ST_FlipCoordinates, and measurement functions, as well as enhancing existing ones. They also worked on integrating external libraries such as JTS and addressing issues related to data type conversions and precision, indicating a strong understanding of geospatial data processing within the Calcite framework. Furthermore, the user contributed to implicit type conversions between CHAR, VARCHAR and Geometry.
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