Rolf Kalbermatter
Technical Engineer Electronics at Kalbermatter Engineering
Randstad, Netherlands
Summary
👤
Senior🎓
Top SchoolRolf Kalbermatter is a seasoned technical engineer with 17+ years blending embedded electronics and software integration, currently supporting research and projects at Delft University of Technology while running his own engineering consultancy. He brings deep expertise in LabVIEW/LabWindows CVI, instrument control, multi-platform C/C#/Java development, and C interfacing—skills honed through roles from National Instruments to project leadership at Averna. Rolf has practical experience stabilizing and extending open-source OPC UA stacks (open62541), improving Windows build compatibility and API cleanliness, reflecting a focus on robust, interoperable systems. Comfortable across Windows, macOS and Linux, he pairs electro-technical training with pragmatic large-application design and network protocol know-how. Colleagues value him for turning complex measurement and control requirements into maintainable, field-ready solutions.
17 years of coding experience
23 years of employment as a software developer
Bachelor, Electrotechnics, Bachelor, Electrotechnics at Berner Fachhochschule - Technik und Informatik - Biel (früher HTL Biel)FEAM, Electronics, FEAM, Electronics at Berufschule Solothurn
English, German, Dutch, German
Stackoverflow
11reputation
5kreached
1answer
0questions
Github Skills (9)
c1710
pubsub10
c1110
open6254110
opc-ua10
cmake8
windows7
vb66
shell6
Programming languages (3)
Github contributions (5)
open62541/open62541
Dec 2023 - Mar 2025
Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0
Role in this project:
Back-end Developer
Back-end DeveloperContributions:42 PRs, 53 comments, 2 issues in 1 year 2 months
Contributions summary:Rolf primarily focused on fixing bugs and improving the stability of the OPC UA implementation. They addressed function parameter type mismatches, corrected compilation issues for Windows systems, and updated the build process to include necessary dependencies. The contributions also involved refactoring the code to align with the latest function naming conventions and improving the handling of configurations. In addition, the user added new features, such as moving configuration loading from ByteString to the public API.
iectsnlicensediec-62541opcua
Open-G/lvzip-library
Jan 2009 - Oct 2019
Contributions:4 releases, 176 commits, 1 PR in 10 years 11 months
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