Kalatech · Eindhoven
Kalatech is a software product studio in Eindhoven, the Netherlands. We look for the problem no one wants to fix. And fix it regardless - from the first idea to the product that ships.
Our own products - we come up with them, build them, and run them. One is live today. The next ones are in development.
Invoicing for Dutch freelancers
An invoice management tool. It takes only one sentence - you type what you did and for whom. Faktuurtje finds the client, the amount, and the service. It then makes an invoice that follows the Dutch rules, with the correct VAT and a SEPA QR code. No template, no spreadsheet.
Built with .NET, Blazor, Mistral AI, and the KvK API.
Go to faktuurtje.comMore products are in development. Leave your email address. Kalatech sends one short message when the next product is ready.
One message for each new product. Nothing else. Kalatech does not give the address to other companies. Read the privacy statement.
Most software grows until nobody wants to maintain it. We go the other way. We check the demand before the first line of code. We cut every feature the first users can live without. And when the research says an idea won't work, we drop it - no matter how much we like it.
We go after narrow problems with hard rules - invoices, payments, compliance. Each product solves one of them completely, instead of twenty problems half way. Faktuurtje makes invoices. It does not try to be your accountant.
Before we build, we talk to the people who have the problem. What they need first is what we build first. The rest waits.
The rules are part of the product, not an afterthought. We are not tied to one technology. Most of our work is in C# and .NET, where our experience runs deepest. When a product needs Flutter on a phone or Python in a pipeline, we use that instead.
Every product gets tests, a clear structure, and a face responsible for it. We own the full workflow - from ideation to architecture and delivery. Email us, and the person who built it answers.
You know the rules and the pain points of a niche market. We know how to turn them into software. Bring the problem - we become your technical co-founder and product team.
Deep knowledge of one field. You know the people who have the problem, and why today's tools fail them. And you want to build a company around it, not just sell an idea.
The full product process - validation, UX, architecture, code, and launch. Years of experience in software engineering and product management mean fast delivery.
We work for a stake in the product, not for an hourly rate. Terms agreed before a single line of code.
Founder
I started Kalatech in September 2025, after more than 5 years of .NET development and software architecture. We build the products, write the code, answer the email - all in-house.
Kalatech stays small on purpose. A small company can finish a niche product, keep it working for years, and give you an answer from the person who built it.
Kaloyan on LinkedInSend an email about Kalatech, about Faktuurtje, or about a problem in your field that software still ignores.