Data Scientist

fonio GmbH; Wien; Presencial; EUR 65.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Equity

Lunch and dinner provided at Vienna HQ

Relocation bonus

Equipment of your choice

Team offsites

Descripción de la vacante

fonio GmbH is seeking a Marketing Engineer in Vienna to bridge data science and paid media. You will build end-to-end ML models that score leads and feed insights back into ad platforms, owning both models and the impact on performance.

You will consolidate signals into a single source of truth, optimize tracking infrastructure, and collaborate with Performance Marketing and Go-to-Market teams to sharpen targeting and bidding. English is mandatory; German is a plus.

Formación

• Experience building data pipelines and ML models using Python and SQL.
• Understanding paid media signals and how platforms consume them.
• Experience with attribution, conversion APIs, or offline conversion uploads is a strong plus.
• Hardworking, analytical, structured, and a direct, ambitious culture fit.
• Strong English skills; German skills are a plus.

Responsabilidades

• Build predictive CLTV modelling from the ground up; consolidate signals into a database, develop ML models on user behavior to score leads.
• Feed those scores back into 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.
• Collaborate closely with Performance Marketing and Go-to-Market teams.

Conocimientos

Python

SQL

ML tooling

Data pipelines

Paid media analytics

English proficiency

German language

Herramientas

Tag Manager

Search Console

Google Analytics/GA4

Offline conversions

Descripción del empleo

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

Who We're Looking For

• 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

What We Offer

• 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.

Hiring Process

• 15 min intro call
• 30 min skill interview
• 15 min Culture fit with the founders