We're looking for a Freelance Software Engineer on behalf of our client, to help design and build scalable data models and pipelines. This will support analytical queries for internal applications used by multiple departments.Key focus areas:Build and maintain real-time and batch data pipelines (Kafka, Spark)Model data for fast analytical queriesEnsure data quality, performance, and scalabilityData architecture and data modelingCollaborate with cross-functional teams to deliver high-impact data solutionsRequirements:Strong Java and Spark SQL skillsExperience with Kafka and SparkUnderstanding of OLAP engines and data modelingFamiliarity with columnar databases is a plusA minimum of 3 years experience working in similar projectsLocation: Germany (Remote)Start: July 2025 (earliest June)Initial Contract: 6 MonthsPlease note that due to the nature of this projects, freelancers should be readily based in Germany. Possibility to be onsite in Berlin is preferred.Darwin Recruitment is acting as an Employment Business in relation to this vacancy.Lucy Leverett #J-18808-Ljbffr