About the role

Marketing is one of Fever's largest investments, and this role exists to answer the question the whole company relies on: does it actually work, and why? You'll follow efficiency across the full chain, from how much we spend and where, through the channel mix and platform setup, down to the creatives themselves. At our scale, a single structural improvement or one well-designed experiment can be worth millions.

The hard part is deciding under uncertainty. Ground truth is often unobservable, clean experiments are not always possible, and calls have to be made with imperfect data. Your value is bringing scientific method to exactly that: forming hypotheses, making your assumptions explicit, and designing the experiments that reveal what genuinely drives incremental results. When a clean test is not feasible, you triangulate across methods instead.

The domain is technical. You'll need to understand how Meta's and Google's delivery algorithms decide where budget flows, how pixels and conversion signals shape what they optimize toward, and how attribution windows distort what you see. You don't need a marketing background. You need real curiosity about how these systems work and the analytical depth to connect them back to business outcomes.
To be clear about what this is not: it is not a media-buying or campaign-management role, and it is not a model-building data-science role. It's for a pragmatic problem-solver who wants to know the truth behind the numbers.

What you'll do

Own the full efficiency chain, connecting spend levels, marketing mix, channel setup and creative performance into one coherent view, and pressure-test what our marketing-automation systems recommend.
Turn open questions into clear test plans, decision frameworks and recommendations, with assumptions and trade-offs stated up front.
Own the signal layer (pixels, events and custom conversions): how it's configured, what the algorithm optimizes toward, and how signal quality changes results.
Dig into the mechanics of paid platforms across Meta, Google and TikTok: campaign structure, bidding, budget optimization, audiences and catalogs.
Design and run experiments that prove what works, from lift tests and geo-lifts to ablation tests and pre/post analyses, with clear metrics, statistical power and decision rules.
Set the standards, playbooks and QA that make experiments rigorous and repeatable, and help raise the craft of the analysts you work with.

Must have

A strong quantitative background: a degree in engineering, mathematics, physics, statistics, computer science or similar, or equivalent hands-on experience in analytical roles.
4+ years in analytics, experimentation, measurement or a comparable quantitative role.
Solid experimentation foundations: A/B and geo experiments, lift and incrementality testing, statistical power and sample-size reasoning, control groups and baselines.
Strong SQL, with enough coding and BI experience to understand what sits behind your analyses.
Real curiosity about how ad platforms work, and comfort operating with imperfect data while being explicit about your assumptions.
Fluent English.

Nice to have

Experience with paid media or growth analytics.
A habit of using AI tools like Claude or Cursor to structure and sharpen your work, while keeping ownership of the logic.
Spanish.

Why you'll love it here

Work in the technical guts of the world's biggest ad platforms, at a scale most people never get to touch.
Run experiments that settle real debates and redirect meaningful budget, instead of sitting in a deck.
Help shape how a world-class data org uses AI to work faster without losing rigor.
Enjoy the Fever experience, with discounts and access to the best live events and immersive experiences.

Benefits & Perks

A compensation package consisting of base salary and the potential to earn a significant bonus for top performance.
Stock options plan.
40% discount on all Fever events and experiences.
Based in Madrid, with a home office friendly setup.
Health insurance and other benefits such as Flexible remuneration with a 100% tax exemption through Cobee.
English / Spanish lessons.
Wellhub membership.
Possibility to receive in advance part of your salary by Payflow.

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