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Data engineer
NHS•  August 2021 - November 2021
Health data transformation (PySpark, SQL, Palantir Foundry): - Modifying dataframes in PySpark (filtering, conditional column operations, user defined functions, joins) - Converting previously created SQL pipeline into PySpark code - Code reviews and integration testing - Improving PySpark performance (caching, cluster configuration, broadcasting) - Managing code repositories - Creating visual reports
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