Tom is a consultant software engineer. His long-term professional interest centres around large-scale distributed storage and processing. He has been a software engineer for over 20 years, and for the last decade has worked exclusively in distributed systems, as a developer, committer and mentor on numerous projects in the Apache Hadoop big data ecosystem. Tom wrote “Hadoop: the Definitive Guide” published by O’Reilly. For the last four years he has focused entirely on large-scale storage and processing for genomics and single-cell data projects, including GATK and Scanpy. He lives in Wales with his family.