Senior .NET engineer, freelance since 2022. I build and maintain open-source .NET libraries, mostly around time, reactive programming and home automation.
- Occurify: define, filter, transform and schedule instant and period timelines in .NET.
- CodeCasa: .NET libraries with NetDaemon extensions and smart home automation utilities. CodeCasa.Showcase shows them in a real setup.
- Reactive.Boolean: Reactive Extensions for
IObservable<bool>. - DependencyInjection.Composite: contextual scoping for
Microsoft.Extensions.DependencyInjection. - Contributor to NetDaemon.
- Freelance work: devjasper.nl
- Essays and a dated record of what I've built: jasperlammers.com
- Articles: DEV.to





