21 set - Milano
Callimacus
About CallimacusbrTutti i candidati sono invitati a leggere attentamente la seguente descrizione del lavoro e le relative informazioni prima di candidarsi.brAt 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.brAs 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.brSo 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.brCallimacus was founded in **** with the early backing of Brunello Cucinelli — one of our first investors, and now one of our customers.
We launched in January **** to strong 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.brWe 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.brWhat you'll buildbrYou'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.brOwn the orchestration layer.brDesign 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.brPut inference on the critical path — and keep it fast.brModel routing, caching, fallbacks,
and latency budgets for a system where "the model is thinking" is not an acceptable state.brBuild the retrieval and selection pipeline.brEmbeddings, vector search, ranking, and the content-selection logic that decides what a visitor sees next.brMake agent behavior measurable.brEvals, tracing, and feedback loops, so quality is an engineering discipline rather than a feeling.brShape how customers extend the system.brTools, guardrails, and configuration — the primitives others will build on.brWhat matters to usbrThese are the same for every role at Callimacus.
We hire people who get the job done and care about the end result — the product, the experience, the people using it.brOwnership.brYou 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.brInvention.brYou 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.brTeam-oriented.brYou're someone others can count on.
You support the best idea even when it's not yours, disagree productively, give and take feedback, share credit, and take on unglamorous work when that's what the team needs.brThe craft bar for this role:brStrong TypeScript and Node.js, with a track record of shipping production systems.
AI systems literacy: RAG, embeddings, vector databases, and agent orchestration are part of your working vocabulary.
You don't need to have trained a model; you do need to know what breaks when inference sits on the critical path.brWhere you might be strongbrWe're early, and nobody is strong in all of these — we don't expect you to be.
Depth in two or three, plus curiosity about the rest, is what wins.
If that's you, apply even if you don't tick every box.brAgent orchestration and multi-step LLM workflowsbrRAG, embeddings,
and vector databases in productionbrPrompt and eval engineering at scalebrStreaming and real-time systemsbrBackend performance work — latency budgets, caching, loadbrData pipelines feeding AI systemsbrBonus pointsbrExperience as an early engineer at a startup or fast-growing companybrShipped inference-heavy or data-intensive productsbrOpen-source work in the AI tooling spacebrWhat we offerbrWe'll ask a lot of you, and we give a lot in return.
We want Callimacus to be a place where talented, driven people flourish, and we take that commitment seriously.
A few things you'll find (and there's more):brA product that will light you up.brYou'll work at the frontier of what AI can do today, on problems nobody has solved before — which means most weeks you'll be reasoning from first principles rather than looking up how it's done.
What you land becomes the way it works.brAn exceptional opportunity for growth.brYou'll work directly with the founders in a small, senior, talent-dense team, with high agency from day one, and play an essential role in the growth of the company.brTop-of-the-Italian-market salary and equity.brYou'll own a real piece of what you're building, aligning your growth with the company's long-term success.brAmazing offices in the centre of Milan.brIn the Moscova neighbourhood, one of the liveliest areas in the city and twenty minutes from anywhere.brTop-of-the-market health insurance.brComprehensive cover, for you and the people who depend on you.brA welfare budget you decide how to spend.brGym, mental health, museums, courses, travel — whatever actually makes your life better.brGenuinely good food all day.brHigh-quality, restaurant-level meals, including breakfast, lunch, and all-day snacks.brOne note before applyingbrWe believe working side by side leads to faster progress, stronger ramp-up, and a culture built around community.
For the next year we have decided to be in-person first.
We've invested in making our workplace worth coming to, and we're happy to support your commuting.
And we 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 or on a settled roadmap, this isn't your role.
xjncmbx If you want to be in the room while the platform takes shape, we'd like to meet you.brLocation:brOn-site, central Milan (Moscova area)brStack:brTypeScript (Node.js), AWS, RAG/LLM/agent orchestrationbrExperience:br4–6 years (Mid) or 6+ years (Senior)brGross annual salary:br€*****k (Mid) / €*****k (Senior), plus equitybr
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