Diagrams & Architecture
Live
Diagrams.info
Diagramming for visual thinking — sketching systems, flows and ideas so they are easier to reason about and share.
diagrams.info
Technology · Leadership · Experiments
I build things. Lead teams. Break stuff. Learn. Repeat.
I’m JC. I share what I’m building, testing and learning — from software and AI to engineering leadership and the occasional ambitious side project.
Writing
All writing →
Latest thinking
Engineering, leadership, AI and building products.
Writing in progress
The first essays are being written. Nothing is published here until it is worth your time.
From the lab
Visit the lab →
Experiments & build logs
What I tried, what happened, and what I would change next time.
The lab is warming up
No lab notes are published yet. The first experiments are running.
Resources & tools
All resources →
Free stuff worth bookmarking
Checklists, templates and small utilities you can use without signing up.
Free stuff, coming up
The first checklists and templates are being prepared. They will show up here when they are genuinely useful.
See the tools on the workbench →
Projects
All projects →
Things I have built
Products and side projects — with honest status labels.
Security & Web
Live
Ingati.com
Website scanning with insights on SEO, security and technical quality.
ingati.com
Building in Public
Live
Lopperiblodet.no
An overview of flea markets, Christmas markets and second-hand markets across Norway — organisers can list their market for free.
lopperiblodet.no
Building in Public
Building
Vollar.no
This site: my notebook for writing, experiments and free resources.
About
Hi, I’m JC.
I work across software engineering, technology leadership and product building. The common thread is simple: build useful things, share what works, and show what doesn’t.
This site is my notebook for that — the thinking, the experiments and the bits worth giving away.
More about me →