Hannu Varjoranta
Building at Avrea.
Founding engineer, focused on better CI. Selected consulting through Varjosoft, alongside my full-time work.
Independent help with your systems.
Avrea is my main focus. Through Varjosoft, I take on selected consulting and advisory work that fits alongside it.
A codebase you need to understand, a data platform that needs attention, or an AI idea you want to put to work.
- Understand the system
- Codebase and architecture reviews. Find the dependencies, risks and constraints before deciding what to change.
- Build or improve it
- Hands-on engineering for data systems, infrastructure and practical AI. Start with one well-defined problem.
- Check the result
- Independent evaluation, reproducible tests and a clear handover. Know what works, what does not, and how to check again.
Tell me what you need. We can agree the scope, timing and fit before committing to anything.
Writing.
I write about systems, AI, trust and the work of checking what we think we know. These pieces are a way to get to know how I think.
A few things on the side.
Varjocraft
My children love Minecraft. I wanted to build something we could develop together and have fun playing together, so I started Varjocraft.
It’s a hobby project: a little woodland game for gathering, crafting and building. It’s open for others to try, too.
Try Varjocraft →Play in your browser with a mouse and keyboard. Still a work in progress.
- Cloop
- I advise the team behind Cloop.
- Valo.ai
- I co-founded Valo.ai, later stepped down, and stayed on as an advisor.
- Spegling
- My personal AI project, focused on memory, continuity and accountable work.
- Dots
- The reading companion on this site, answering questions about the page.
- patterns-starter
- An open collection of working patterns you can adapt for your own projects.
Get in touch.
I’m Hannu Varjoranta. Systems engineer, founder and writer, with two decades in infrastructure, security and data systems, including Spotify and F-Secure. Today I work full-time as a founding engineer at Avrea.
Varjosoft is my own company for independent work alongside that role. I keep it small, with time for writing, advisory work and building things with my children.
The path is a conversation. Tell me about the problem, what help you need and your timing. I’ll let you know whether I can help alongside my work at Avrea.
Or write directly: hannu@varjosoft.com. A person reads it and a person answers.