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Arun Jacob M. is an experienced Database Administrator and Subject Matter Expert with a comprehensive background in various database technologies, including Oracle, MongoDB, and Cloudera Hadoop. Currently serving as a Database Administrator SME at Nationwide Building Society since July 2020, Arun has previously held senior positions at Sainsbury's Argos, IG, Paysafe Group, TalkTalk, and the National Grid, showcasing expertise in database administration, data backup and recovery, and system engineering. Academic credentials include a Bachelor's Degree in Computer Science & Engineering and numerous certifications from MongoDB University, Pearson, and Oracle University, demonstrating a commitment to continuous professional development in database operations and performance tuning.