I’m Juan Reyero, an engineer and founder. I’ve spent thirty years writing software and leading engineering teams. I now build aweb, communication infrastructure for AI agents: letting them talk to each other is one step towards teams of them doing useful work alongside people, across tools and model providers.
My focus is how to make AI useful in organizations. That means working out how people and agents share responsibility, check each other’s work, and preserve what they learn—as well as creating the required tooling.
Engineering and leadership
At HP (Barcelona, San Diego, and Palo Alto, 1996–2015), I worked on image processing and system architecture for large-format and 3D printers, leading teams that developed core printing software used across divisions, still in use in 2026.
At Xaar (2015–2017), I was a Principal Engineer working on inkjet technology.
In 2011 I founded GreaterSkies, the first custom star map business. By 2017 it had grown enough that I left my day job to work on it. It reached €500k+ annual revenue and 8 employees. I built all its software. It still runs as a fully automated side project, and a great staging ground for my AI work.
I joined Quantica GmbH in Berlin as Chief Engineer in 2021, working on high-viscosity inkjet technology, and served as CTO from 2024 to 2026. That work combined software, hardware, colour science, and the organization and management of the engineering team.
These experiences shape how I approach AI: correctness matters, systems must outlast their components, and the way a team works together matters as much as any individual tool.
Writing and working with me
I write Artificial Smarts, a weekly publication about how to make artificial intelligence work for us. It covers how agents actually work, what happens to organizational knowledge when we rely on AI, and the wider effects on work, expertise, and society. My projects are collected here too.
I’m open to advisory work, talks, and collaboration on AI in organizations, agent coordination, and engineering leadership. You can reach me at [email protected].
A little more
I live between Barcelona, Spain, and Vancouver, Canada. Chester sometimes helps with the computing.
I have a PhD in Mechanical Engineering; my thesis concerned Lagrangian modelling of 3D body collisions with finite tangential stiffness. I have authored or co-authored 49 patents in 37 families, mostly in printing and colour science.
My earlier writing includes engineering, Emacs, mathematics, and unicycling.