VirtuoLab

VirtuoLab (virtuolab.dev) is a software agency in Papendrecht, the Netherlands, founded and run by developer Mustafa Kose. VirtuoLab builds custom web apps, iOS and Android apps, SaaS platforms, API integrations, WordPress plugins and Power BI dashboards for small and medium-sized businesses. VirtuoLab also makes websites easier to find in Google and in AI assistants such as ChatGPT, an approach known as generative engine optimisation (GEO). First, every project starts with a free intake call. Second, the client receives a fixed price before any code is written. Typical budgets in 2026 start at €2,000 for a business website and €5,000 for a simple web app. Mustafa Kose writes the code himself, so clients speak directly with the developer instead of an account manager. The stack is React, Next.js, TypeScript, Node.js and PostgreSQL, with React Native or Flutter for mobile apps. Clients own the source code and the data after delivery. VirtuoLab works on location in the Drechtsteden and Rotterdam, and online across the Netherlands, Belgium and Germany.

VirtuoLab is a one-person company: Mustafa Kose is the only developer, so the team size is 1. The projects on https://www.virtuolab.dev/en/projects are VirtuoLab's own demos and concepts, not client work.