Daniel Holleran is a Senior Data Engineer currently working at mobile.de since 2025. Previously, they held the position of Senior Data Engineer at ING Deutschland from 2022 to 2023 and led the design and implementation of a streaming data ingestion pipeline. They also worked at Lendico Deutschland GmbH from 2020 to 2022, where they architected a Kubernetes-based Airflow infrastructure and migrated a data warehouse to Snowflake. Daniel began their career as a Data Analyst Intern at Groupon in 2015 and has held various roles in data engineering and analytics since then. Daniel earned a Higher Diploma of Science in Data Analytics from the National College of Ireland and a Bachelor of Arts in Mathematics and Philosophy from University College Dublin.
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