I’m Malte Buttjer, an entrepreneur with 20+ years of experience in tech and business. I founded, raised significant funding for, sold and closed companies, served as Managing Director and CTO. I led product development, defined tech stacks, built software teams, created brands, visual and software assets, and managed core operations.
Hands-on leadership with one standard: create the conditions for teams to work effectively and reach their full potential.
Currently building automation-first ventures: Cardmuseum and Shield N Show run with zero employees on 52 n8n workflows with LLM orchestration. And I’m open to the right challenge.
Projects
All projects →Active
Lumi Fave — Cardmuseum & Shield N Show
Two complementary automation-first businesses: Cardmuseum, a revenue-generating e-commerce operation, and Shield N Show, a long-term B2B product brand. They run with zero employees on 52 n8n workflows with LLM orchestration and custom integrations across marketplace and ERP systems; running them takes about two days a week, almost none of it operations.
Active
n8n-decanter
A guard proxy for AI agents editing n8n workflows: Code node source lives in git, one write is blocked. MIT-licensed and on npm.
Writing
All writing →24 August 2026AITOOLS
The image pipeline: Source, Design, Translate, Compose, Review, PublishMy method, my stack and a plan you can hand to a coding agent
Producing product imagery at catalogue scale, in three parts: the six-stage method and the invariants that make a run repeatable, the concrete stack I would choose again with the price of each choice, and a fill-in-the-blanks build plan written for a coding agent.
5 August 2026AITOOLSOPEN SOURCE
Free your Code nodesA guard proxy for AI agents editing n8n workflows: Code node source lives in git, one write is blocked
n8n Code node source is a string in a JSON blob: no diff, no types, no review. n8n-decanter moves the source into git and guards the one MCP write that would bypass it.
1 July 2026VENTUREAI
Closing the loopsAutomating a business, eight months in: methodology and first numbers
One event queue, three closed loops, and humans reduced to approve/deny. Sixteen hours a week, still four times away from the four-hour workweek.
10 March 2026VENTUREAI
Kompatibel mitNotes on the translation pipeline behind Cardmuseum and Shield N Show, and the guards it grew after a marketplace enforcement week
How a two-person cards-and-accessories venture sells in nine languages without a translator: glossary-as-config, hash-based staleness, deterministic compliance words, and validation that refuses to write.