What can be said
Worldwatch.market BV is based in Amsterdam and builds one product for one trade. The team is small, and small enough that the same people write the software, answer the support mail and talk to dealers. There is no arrangement where an engineer is kept away from the people using what they built.
The trade knowledge is not optional. A watch is a serial number, a service history, a purchase invoice and a margin, and software that treats it as a product with a price loses all four. Anyone joining is going to have to learn that, and someone who already knows it starts a long way ahead.
Writing in anyway
The contact form reaches us, and it is the right route even without a listed vacancy. Say what you have built or sold, and what you would want to work on here. A small team hires when the right person turns up rather than when a plan says to.
Before you write
Read about for why the product exists and features for what it currently does. If you have sold a watch professionally, say so in the first line.