Roald Nefs
Chief Technology Officer (CTO) at Warpnet B.V.
Groningen, Groningen, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolRoald Nefs is a pragmatic CTO with 11 years of hands-on experience in cybersecurity, SRE and platform engineering, who believes the best security is invisible to engineers. He has driven secure, compliant platforms at Warpnet and across the Dutch public sector, translating complex standards like NIS2 and ISO27k into practical engineering controls. A developer at heart, Roald built and open-sourced tooling such as salt-lint and contributed code and docs to the widely used SaltStack project, including a Telegram returner and cron fixes. He combines product ownership and team leadership—having overseen Secure Dropzone and coached DevOps/SRE teams—with an inclination for hardware hacking and community building through BSides and Cloud Native meetups. Based in Groningen, he pairs technical depth in Python, automation and security with a knack for making compliance usable rather than obstructive.
11 years of coding experience
11 years of employment as a software developer
Bachelor's degree, HBO-ICT (major Network ＆ Security Engineering), Bachelor's degree, HBO-ICT (major Network ＆ Security Engineering) at HanzeProgramming in C/C++, Programming in C/C++ at University of Groningen
English, Dutch
Stackoverflow
1,382reputation
240kreached
30answers
1question
Github Skills (21)
cron10
python10
pyside10
configuration-management10
telegram10
documentation10
yaml9
infrastructure-as-code9
refactoring9
remote-execution8
automations8
automation8
cloud-manager8
build-automation7
django-middleware6
Programming languages (17)
Github contributions (5)
atlas0fd00m/rfcat
Jan 2019 - Jun 2019
RfCat - swiss-army knife of ISM band radio
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:17 commits, 8 PRs, 18 comments in 4 months
Contributions summary:Roald primarily focused on modernizing and refactoring the `rfcat` project, a Swiss-army knife for ISM band radio. They migrated the `ccspecan` module to use PySide2, updating the UI framework. The user also refactored and ported the `rflib` module to be compatible with Python 3, incorporating necessary adjustments for print statements, absolute imports, and exception handling. They also made changes to the project's build and setup files.
rtlsdrsoftware-defined-radioarmybandaudio
saltstack/salt
Mar 2017 - Jan 2018
Software to automate the management and configuration of infrastructure and applications at scale.
Role in this project:DevOps Engineer & Technical Writer
DevOps Engineer & Technical WriterContributions:14 commits, 18 PRs, 25 comments in 10 months
Contributions summary:Roald primarily contributed to documentation and infrastructure-related tasks within the SaltStack repository. Their work involved fixing documentation formatting issues, particularly concerning the `mattermost_returner` and `local` returner modules, and making improvements to code examples. Furthermore, the user implemented a new Telegram returner module and related tests. The contributions also include fixes in the cron module and associated state management, along with updates to documentation.
pythonzeromqevent-streaminfrastructure-managementcloud-providers
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