Kalatech · Eindhoven

Expressing creativity through software

Kalatech is a software company in Eindhoven, the Netherlands. It builds its own products and helps other companies build theirs.

See our products Contact Kalatech
Products

Software that Kalatech builds and runs

Faktuurtje

Invoices for Dutch freelancers

Faktuurtje makes invoices for Dutch freelancers (ZZP'ers). You type one sentence. Faktuurtje finds the client, the amount, and the service. It then makes an invoice that follows Dutch rules, with a SEPA QR code.

  • Blazor
  • .NET
  • Mistral AI
  • KvK API
Go to faktuurtje.com

Next product

More products are in development. They will appear here when they are ready.

Services

Services for your software team

Kalatech accepts freelance projects in these areas.

.NET and Blazor development

Kalatech builds web and desktop applications with C#, .NET, Blazor, WPF, and EF Core. The code has tests and a clear structure, so your team can maintain it.

Software architecture

Kalatech designs new systems and reviews existing ones, with Domain-Driven Design and Clean Architecture. It also finds and removes performance problems in data-processing code.

AI and NLP integration

Kalatech adds language models to business software. The Faktuurtje engine combines regular expressions with Mistral AI. It reads Dutch invoice text with an F1 score above 90%.

Technical leadership

Kalatech can lead your development team for a limited period. This includes architecture decisions, code standards, Scrum ceremonies, hiring, and coaching of developers.

About

The person behind Kalatech

Portrait of Kaloyan Krastev

Kaloyan Krastev

Founder · Software team lead and .NET architect

I started Kalatech in September 2025. My background is more than 5 years of .NET development, software architecture, and team leadership, mostly for engineering and scientific software.

Now
Team lead for vibration analysis (NVH) software, with real-time and batch data processing and physics-based simulation.
Team work
Code standards, technical direction, and feature planning with product management, design, and customer success.
Before
Lead developer of an in-house ERP system for about 50 users, from the database design to the release.
Education
BSc ICT and Software Engineering, Fontys University of Applied Sciences, Eindhoven. The graduation project was a statistical forecasting algorithm for warehouse stock.
Languages
English, Bulgarian, Spanish
Kaloyan on LinkedIn
Contact

Tell Kalatech about your project

Do you have a project or a question? Send an email with a short description of the work.

Email info@kalatech.net Kalatech on LinkedIn