Product Engineer, Experience
Pubblicato il 22-09-2026 - Callimacus in Modena
About Callimacus
At Callimacus, we're working to change how people interact on the web. For the past 30 years, the user experience as we know it has been anchored to a typographic paradigm - predefined navigation trees of pages, sections, and menus - established in the Nineties when the web was born.
As the way people get informed, entertained, and shop evolves, traditional websites and interfaces are losing relevance, and the tools available limit the creative evolution of digital experiences. Callimacus was born from the conviction that the whole web experience can and should be reinvented.
So we built the engine for a different kind of digital experience. Callimacus is a multi-agentic platform that plugs into a company's existing stack and reads multi-dimensional signals to understand what a visitor wants in the moment. Then, in milliseconds, our proprietary technology composes the entire interface around that intent, selecting the most relevant content and components as the person interacts.
Callimacus was founded in 2024 with the early backing of Brunello Cucinelli - one of our first investors, and now one of our customers. We launched in January 2026 to organic interest from enterprise customers, and recently raised from Salesforce Ventures the largest AI investment they have made in Italy, and one of their most significant in Europe.
We are a small, product-focused, founder-led team. We work on hard problems that haven't been solved before - by us or anyone else - and the people who join now get to solve them. We move fast, with high agency and strong ownership.
What you’ll build
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- Own the rendering path. The pipeline that turns composed output into an experience that feels immediate - streaming, hydration, and perceived performance on sites we don't control.
- Build the SDK customers integrate. The TypeScript SDK that drops into enterprise frontends - API design, developer experience, and documentation people actually enjoy using.
- Design the compon