Job Description Kleinanzeigen reaches 36M+ monthly users and is Germany's leading online classifieds market. We are a sustainability-focused platform where you won't just write code; you will power the services that bridge our high-traffic backend with seamless user experiences.
You'll work at the intersection of data, product, engineering, and CS. This is a hybrid role, based in Barcelona Spain.
Strong proficiency in SQL and experience with data analysis tools (Tableau, Python, etc.).
~ Experience writing technical rules with rule engines (Threatmetrix, Arkose, Sift, internal-rule based system, etc.)
~ Profecient with Python for more advanced data analysis & automation
~ Experience to authentication, behavioural biometrics, and fraud stemming from user generated content such as ads and messages

Analyze fraud patterns using marketplace and behavioral data to uncover new attack vectors, emerging threats, and operational gaps.
The chance to be a key player in a growing, highly skilled team
~ Benefits like private health insurance.
~ Career development, including individual training budget.
~ 26 days of holidays

📌 SQL Technical Specialist (Barcelona)
🏢 Adevinta
📍 Barcelona