About Publicit

About Publicit. Be everywhere. Publicit is the European self-service platform for omnichannel advertising: one dashboard that puts a campaign on connected TV, billboards, digital screens in the street, metro stations, mobile apps and press. Things that used to take three agencies and six weeks now take a few minutes and a work email.

Underneath that simple dashboard sits the hard part, our own hybrid ad exchange . Every time an ad slot opens anywhere in our network, a TV in a living room or a screen in a metro corridor, an auction has to run and finish before anyone notices it happened. Milliseconds. Not "fast for a web app" milliseconds; the kind where garbage collection pauses are a bug, and where a query to a database you didn't need to make is the difference between winning and losing.

Most of the industry solved this by stacking more cloud servers on the problem and accepting the latency. We took the opposite bet: rebuild the decision path from the ground up, in Rust, with hardware acceleration and GPU-based decisioning, so we can afford to actually think about each auction. Is this ad relevant to this viewer? Is this placement safe for this brand? What is it genuinely worth? All of it in the time most exchanges spend on network overhead alone.

We're a small engineering team in Barcelona building real infrastructure in a market where most players stopped building years ago. Nobody here is maintaining someone else’s platform.

The role

This role sits across both halves of the company: the exchange that runs the auctions, and the platform our customers actually touch. Very few engineers work across that line. The ones who do end up making the decisions that matter,



because nearly every hard question here turns out to be a question about the seam between them.

An advertiser sets a budget in a form. Somewhere downstream that becomes pacing logic in a system with a millisecond budget, and when the two disagree, somebody has to hold the whole picture in their head to see why. That person is you.

Half your week is building. The other half is making sure the right things get built, in the right order, by the right people.

We know where we're going and we have the roadmap to get there. What we're looking for is someone to take a piece of it and own it end to end: how it's shaped, how it's built, who builds it with you, and the number that says whether it worked.

This role grows with the company. You'll set how we build here, and over time, who builds it.

What You'll Do

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- Own the connection between the exchange and the platform. Campaigns, budgets, targeting and reporting all have to mean the same thing on both sides of that line. Keeping them honest is one of the highest-leverage jobs in the company.

- Lead delivery on what you own. Break the work down, sequence it, keep it moving, and unblock the people around you. Not by running a process, but by being the person who sees the whole thing.

- Build. TypeScript and React across the product surface, plus the backend work a feature needs to actually exist.



You ship what you argue for, and the people you work with will read your code.

- Set the technical direction for the product side. How it's structured, what the standards are, what we stop doing. The bar you hold yourself to becomes the bar.

- Own scope. Decide what ships now, what ships later, and what doesn't ship at all. Then defend it.

- Talk to advertisers constantly. Onboarding calls, support conversations, watching over someone's shoulder while they try to launch. The best decisions here come from noticing where somebody hesitated.

- Own the numbers. How many people who sign up launch a campaign. How many come back and launch a second. Where they drop, and why. Instrument it, then move it.

- Raise the people around you. Review code like it matters, explain the reasoning, and make the person better rather than just the pull request.

What We're Looking For

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- Around 4 to 6 years building software that real people used. Not years in a seat. Things that shipped and that you can talk about honestly.

- You've owned a product or an area end to end. You decided what got built, you shipped it, and you lived with the consequences when you were wrong. That matters much more to us than how many people reported to you.

- Strong TypeScript and React. You build what you argue for, so the building has to be real.

- You're comfortable being the least expert person in the room, then not being. You won't know the exchange side on day one. Nobody does. We care that you can get deep enough, fast enough, to make good calls across it.

- You have product opinions and you change them with evidence. Both

📌 Product Engineer (Cataluña)
🏢 Publicit
📍 Cataluña