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Jessika Mahan is a Senior Data Developer at TaxAct since September 2016, specializing in Hadoop development for data ingestion and ETL workflows. Prior experience includes serving as a Sr ETL Developer at Highmark Inc., where responsibilities involved establishing connections between systems for data transfer and creating logic for delta processing. At Boyd Group Services Inc., Jessika held the position of Sr. Hadoop Developer, focusing on scalable distributed data solutions and project management through tools such as JIRA and GIT. Earlier in career as a Programming Analyst at Signify, Jessika contributed to software implementation and upgrade processes in Oracle Applications.