Internship

Goldman Sachs is an American Multinational Investment Bank and Financial Services Company and I was blessed with the opportunity to intern at Goldman Sachs as a Summer Analyst. I aimed at the art of machine learning programming and undertook the empirical adventure of building frameworks to control rebill rates and identify bogus claims in disputed transactions data, closely working with transactions, fraud capabilities, disputes strategy, investigation specialists and modelling teams. I devised metrics for driver and target population analysis and queried transactions and disputes data to compute metrics using SQL and PySpark in databricks. I examined these metrics for rationality using their graphical representation. I ideated two hypothesis, pertaining to the problem statement and investigated their validity using data, where one hypothesis was substantiated and one was rejected after laborious consideration of statistical inferences. I deployed a decision tree classifier with XG-boost to train a machine learning model using the evaluated metrics, identified top features and certified model performance on out-of-time data using the modular program developed. I deliberated with my ingenious managers and field experts over the efficacy of results from the model developed, model integration into real-time pipeline execution, correlated business outcomes and long-term impact of the project. I got the opportunity to articulate and present my models to the leadership, including the motivation of my problem statement, analysis framework, modelling framework, observations, results from the synchronised implementation of the model in ongoing disputes and business outcomes. I am not supposed to disclose the details of my problem statements, workflow, results and business outcomes from my project due to compliance issues and confidentiality of the data. However, I cannot emphasize how steep my learning curve had been during the 6 weeks of this internship, where I got to work with extremely cheerful and knowledgeable managers and a wonderful team with years of experience in this field.