From Q-tech, we are collaborating with a large European technology company, part of a leading international retail and distribution group, that is looking for a Data Engineer to join a highly innovative squad within the Marketing & Communication domain. Youll work on one of the companys most strategic products: one of the largest customer loyalty apps in Europe, with over 130 million users, managing massive-scale customer and transactional data to power advanced segmentation, personalized campaigns and data-driven decisions across countries. The role is a strong fit for engineers who enjoy scalability challenges and large-volume data architecture, with growing exposure to the companys Data Science and AI initiatives — the product already uses Generative AI for natural-language customer segmentation, with more AI-driven analytics planned. This hire expands the team, adds delivery capacity, and enables further AI/Data Science innovation. Responsibilities * Design, develop and maintain scalable batch and real-time data pipelines.



* Build and optimize data solutions for very large volumes of customer and transaction data. * Develop and maintain the Marketing Data Layer used by marketers across countries. * Transform analytical data into operational datasets for segmentation and campaign execution. * Ensure data quality, performance, governance and reliability. * Collaborate with Data Engineers, Software Engineers, Product Owners and business stakeholders; support other squads as needed. * Contribute to AI-powered marketing products, advanced analytics, and ML solutions where relevant. * Identify actionable insights from customer behavior and purchasing patterns. Must have * Strong experience as a Data Engineer with large-scale datasets. * Advanced Python and SQL. * Experience with Databricks and Airflow * Big Data frameworks: Spark, Kafka, Kubernetes, Hive. * Relational (e.g., SQL Server) and non-relational databases (e.g., MongoDB, ELK, Cassandra). * Experience designi

📌 Data Engineer (Barcelona)
🏢 Q-Tech
📍 Barcelona