Way of work: On site Milano, zona MoscovaKey tech skills: TypeScript (Node.Js), React, AWS, RAG/LLM/agent orchestrationExperience: Middle/SeniorTotal comp: *k **k middle, *k senior) plus equity and benefits About CallimacusCallimacus is reinventing how people interact with the web.
Since the Nineties, digital experiences have been built around a fixed paradigm: predefined pages, menus, and navigation trees, that no longer fits how people browse, shop, and get informed today.Callimacus built the engine for something different: a multi-agentic platform that plugs into a company's existing stack, reads real-time signals to understand what a visitor wants, and composes the entire interface around that intent in milliseconds, selecting the most relevant content and components as the person interacts.Founded in ** with early backing from Brunello Cucinelli, now both an investor and a customer, Callimacus launched in January ** to strong enterprise interest, and recently raised an important investment from Salesforce Ventures, its largest AI investment in Italy.
The team is small, product-focused, and founder-led, working on hard problems nobody has solved before.What you'll buildYou'll join a small senior team at the point where the platform's foundations are still being set.
Callimacus is in production with demanding customers, and the architecture, the performance envelope, and the shape of the developer experience are all still yours to influence.
Decisions you make in your first months will still be load-bearing in three years.Own the orchestration layer.
Design how our agents turn multi-dimensional visitor signals into intent, and intent into a fully composed interface — in milliseconds, in production,



for demanding enterprise customers.Put inference on the critical path — and keep it fast.
Model routing, caching, fallbacks, and latency budgets for a system where "the model is thinking" is not an acceptable state.Build the retrieval and selection pipeline.
Embeddings, vector search, ranking, and the content-selection logic that decides what a visitor sees next.Make agent behavior measurable.
Evals, tracing, and feedback loops, so quality is an engineering discipline rather than a feeling.Shape how customers extend the system.
Tools, guardrails, and configuration — the primitives others will build on.
One note before applyingCallimacus believes working side by side leads to faster progress, stronger ramp-up, and a culture built around community.
For the next months, the team has chosen to be in-person first, they've invested in making the office worth coming to, and are happy to support your commute.They also don't work by tickets: priorities get redefined often, sometimes mid-week, and you'll need to be comfortable with that.
If you're set on remote work or a settled roadmap, this isn't your role.
If you want to be in the room while the platform takes shape, they'd like to meet you.
What you'll buildYou'll join a small senior team at the point where the platform's foundations are still being set.
Callimacus is in production with demanding customers, and the architecture, the performance envelope,



and the shape of the developer experience are all still yours to influence.
Decisions you make in your first months will still be load-bearing in three years.Own the orchestration layer.
Design how the agents turn multi-dimensional visitor signals into intent, and intent into a fully composed interface in milliseconds, in production, for demanding enterprise customers.Put inference on the critical path, and keep it fast.
Model routing, caching, fallbacks, and latency budgets for a system where "the model is thinking" is not an acceptable state.Build the retrieval and selection pipeline.
Embeddings, vector search, ranking, and the content-selection logic that decides what a visitor sees next.Make agent behavior measurable.
Evals, tracing, and feedback loops, so quality is an engineering discipline rather than a feeling.Shape how customers extend the system.
Tools, guardrails, and configuration, the primitives others will build on.
What matters at CallimacusThese are the same for every role.
Callimacus hires people who get the job done and care about the end result: the product, the experience, the people using it.Ownership: you feel deeply responsible for your work and behave accordingly, from design through production and after.
You don't wait to be told what to do; you see problems and act.
"It's not my job" is not part of your mindset.Invention: you light up at hard problems and are creative at finding solutions.
You experiment, get your hands dirty, and land things.
You hold very high standards and always look for ways to improve.Team-oriented: you're someone others can count on.
You support the best idea even when it's not yours, disagree productively, give and take feedback, share c

📌 Product Engineer Ii (Bardi)
🏢 Callimacus
📍 Bardi