She usually runs a startup company from Cape Town.
But when the war broke out, Jessika Nilsson began to think about how she could support Ukraine.
"Pretty quickly I realized that I could build a tracker for Russian oligarchs' luxury yachts," says the tech contractor at Ekonomibyrån.
She pitched the idea to a bunch of friends.
Within a few days, they had built a website with a map where you can see how the boats of sanctioned oligarchs move around the world.
Linked to the website is a Twitter account that is updated automatically when the yachts change course.
The tool is based on so-called AIS technology, public information that larger vessels are required to send out so that, for example, authorities and other boats can see where they are.
The ambition is to help authorities seize the yachts.
Tried to tip the FBI
A few weeks ago you could see how many set course for Turkey.
- Then they moved through European waters.
So it was a little frustrating that they were not taken then, because we knew they were going to Turkey where they will probably be safe.
Another "hotspot" is the Maldives, according to Jessika Nilsson.
- There are very many who go to the Maldives.
I can only speculate that they have some kind of "safe haven" there.
So as a protected place.
- Then there is a lot about Panama.
There, however, we could see how a yacht happened to go into American waters, unfortunately only very short.
So we tried to tell the FBI about it but it was too late.
"Hope they get angry"
Yachts such as Jessika Nilsson and her colleagues have contacted authorities several times if they have been seized.
The plan is to continue with the project until the war ends.
- As long as there are chances to take yachts, we want to contribute to doing so.
- My hope is that the oligarchs will become very angry and that they will put pressure on Putin to stop this invasion, says Jessika Nilsson.