Summary
Toon Alfrink is a hands-on founder and fractional CTO with 14 years of experience turning spreadsheet-and-SaaS messes into production-ready SaaS products and automated workflows. He architects, codes, and operates systems end-to-end—mixing Postgres, Metabase, n8n and custom Python/Node services—while advising on product, hiring, security and investor readiness. Comfortable as the sole senior engineer in tiny teams, he has taken unfinished products to live customers, implemented billing and bank integrations, and mentored junior developers. His background ranges from C#/.NET data pipelines to Shopify storefronts and AI safety education, which lets him pick the right tool for the job rather than defaulting to one language or stack. Based in Amsterdam, he focuses on short-to-medium term engagements across Europe where startups need immediate technical ownership and reliable delivery.
14 years of coding experience
6 years of employment as a software developer
Bachelor's degree, Artificial Intelligence, Bachelor's degree, Artificial Intelligence at Utrecht University
VWO, Economie&Maatschappij, VWO, Economie&Maatschappij at KSG De Breul
French, German, Dutch, English