Marketing Engineer

About fonio
===============

We grew from $1M to $10M ARR in under 12 months and now serve 10,000\+ customers.

Fonio is Europe’s market leader for AI phone agents for SMBs. Now we’re expanding globally and into new products.

We move fast, take ownership, give direct feedback, and avoid politics and unnecessary meetings.

Join one of Europe’s fastest\-growing companies.

Your Role
=============

As our Marketing Engineer, you sit at the intersection of data science and paid media. You'll consolidate scattered customer signals into a single source of truth, build ML models that score leads by their real value, and feed those insights back into our ad platforms \- making our marketing smarter than the platforms' out\-of\-the\-box optimization. It's a hands\-on, build\-from\-scratch role with full ownership over both the models and the impact they create.

What to expect
==================

• Build our predictive CLTV modelling from the ground up: consolidate customer signals into a database, develop ML models on user behavior to score leads


• Feed those scores back into the ad platforms (Meta, Google, and more) to sharpen targeting and bidding


• Own tracking and conversion infrastructure: Tag Manager, Search Console, offline uploads, server\-side setups


• Turn raw behavioral data into measurable performance impact


• Work closely with the Performance Marketing team and Go\-to\-Market managers

• You're comfortable building data pipelines and ML models \- Python, SQL, and modern ML tooling are second nature


• You understand paid media well enough to know what signals matter and how platforms consume them


• Experience with attribution, conversion APIs, or offline conversion uploads is a strong plus


• Hardworking, analytical, structured, and a natural fit for a direct, ambitious culture


• Strong English skills, as English is our company language


• German skills are a big plus

• Competitive Salary: €65\.000\-€130\.000


• Equity \- you build it, you should own a piece of it.


• Food \& drinks \- at our Vienna office, lunch and dinner are on us (plus all the drinks your heart desires, and yes, we have protein bars and vitamins too).


• Relocation bonus (if you still need to move to Vienna)


• Equipment of your choice \- whatever makes you happy.


• Regular team offsites.

• 15 min intro call


• 30 min skill interview


• 15 min Culture fit with the founders

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