Featured Citizen – Jon Jarnsäter


It is with great pleasure that we welcome Jon Jarnsäter to Cortex City!

This one is a rare combination of solid engineer and creative artist. He looks younger than he is, works harder than you think, and is a great example of a jack of all trades, something that we value deeply here in the city. In short, he can probably do absolutely anything — but don’t tell him that.

It wasn’t easy to find the time to sit down and have a chat with Jon, but we’ve finally managed to make it happen. Read on and get to know a very intriguing citizen!

Who is Jon, professionally?

Hidden beneath a fancy title I’m a software developer at heart. When people ask me what I do, I tend to say I’m a professional nerd, but a proud one. I consider software devlopment to be a true craftmanship, and appreciate all the pieces of it, from the optimized algorithms to the user experience. If I had to choose, I’d say the user experience part is “my precious” though. I like the challenge of trying to see something from another person’s point of view. Probably also rooted in my lack of patience with bad UX 🙂

Check out this video for some great “Jon moments”:

What do you do when not working?

When I’m not working, I enjoy spending time with my family: My wife Monia, my two kids Linus and Linn, my dog Diesel and my Gibson guitar (not in prio order). Yes, I realize that we picked a bad-ass brutal dog name for a small cute furry thing, but at least he’s got the black color right. Music is a big part of my life and I have played in everything from Pantera-like groove metal to Irish folk music. I enjoy many forms of music, and I think all genres have something special to give. If I had to select a single personal guitar hero, it would probably be Django Reinhardt.

No, Diesel is not the powerful creature on the top. It’s the tiny squirrel at the bottom of the picture…

How do you know the Mayor?

I got to know the Mayor working within the same company. I always found him to have this sort of “professional positivity” (word patent pending) that rubs off on people nearby, including myself.

What brings you to Cortex City?

I was drawn to Cortex City by the “oh, something new and shiny!” factor, but stayed because of the people in it. It seems the same type of people as myself are building this city. Passion is something that drives me in all I do, and I need to to have the same kind of people around me to do a good job.

How about the rumor that you want to be a rock star, any comments?

The rumors of me wanting to be a rock star have been greatly exaggerated. Although, with my only super-power being able to sneak in back stage at concerts, maybe there is something nagging unconsciously.

What are your three favorite computer science books of all time?

When it comes to computer science books, I come from the non-traditional way of learning software development by googling my way forward, so quoting my favorite ones would not really be fair considering the number of contestants. I have read a few on design patterns and some on user experience, but that’s about it. And no, I’m sorry to say that I have still not had the pleasure of experiencing the magic of Beyond the C++ Standard Library: An Introduction to Boost. I assume it’s a love story of some kind?

[Editor’s note: It contains mild sexual language, mainly directed at naughty C++ templates.]

Do you have any special future goals that you’d like to share with us?

Regarding future professional goals, I must admit that even though I like to plan ahead, I’m not the kind of person that makes 10 year plans. Maybe it’s my lack of fear for change that’s behind that (surprise me!), or maybe just that I don’t want to get disappointed, hmmm, I’ll have to bring that up with my future shrink 🙂  On the personal side though, I have just re-discovered painting and would like to pursue that a bit more. And, a continuous goal has always been to practice more music in different forms. I guess this means I have to cut down on working hours (or start sleeping less) at some point, but I’ll let future Jon take care of that problem.


We found a more representative picture of “the beast” known as Diesel, Jon’s dog/squirrel

Join me in welcoming Jon “Diesel” Jarnsäter to our community! Perhaps we can get him to play something for us on the guitar on the Cortex City summer party?

Bjorn “The Mayor” Karlsson


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