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.

We are looking for a technical fraud analyst to join our growing fraud team. You’ll work at the intersection of data, product, engineering, and CS. Using your analytical and technical skills, you will identify fraudulent behaviour, monitor for credential stuffing attacks, bot attacks, build pro-active rule based defenses, and influence the roadmap to keep Kleinanzeigen safe marketplace.

This is a hybrid role, based in Barcelona Spain.

Job Requirements

- 4+ years of experience in fraud analytics, trust & safety, or a similar technical role in a C2C marketplace or traditional e-commerce environment.
- Strong proficiency in SQL and experience with data analysis tools (Tableau, Python, etc.).
- Familiarity with bot detection,

📌 Technical Fraud Specialist (Barcelona)
🏢 Adevinta
📍 Barcelona