Tirusew Wube

About Tirusew Wube

Master’s degree in Data Science with a strong experience in multidisciplinary and…

Experience

1. Data Scientist Machine Learning Engineer

   Dell Technologies

   Mar 2021 — Present · MD, US

   Responsible for clarifying business objective, data collection, data wrangling, data preprocessing, exploratory data analysis, feature engineering, machine learning modeling, model tuning, deploying models.• Worked closely with internal stakeholders such as business teams, product managers, engineering teams, and partners.• Used Spark ML to leverage the computational power of spark to Machine Learning in improving the performance and optimization of the existing algorithms using Spark Context, Spark-SQL and Spark Data Frames.•Wrote PySpark queries to clean, impute and manipulate from large volume of records of customer data for EDA and modeling.• Involved in performing text analytics with customer feedback in emails and call transcripts, built a text classifier and Sentiment Analyzer using Recurrent Neural Network LSTM and a huge word cloud in python.• Used AWS transcribe to obtain call transcripts, and perform text processing (cleaning, tokenization, lemmatization)• Leverage AWS Sage Maker to build, train, tune and deploy state of art Machine Learning and Deep Learning models.• Performed K-fold Cross Validation, Log loss function, ROC curves and AUC to evaluate the model performance.• Developed Spark ML Pipelines that drive data for the automation of training and testing the models.• Created Data Quality Scripts using SQL and Hive to validate successful data load and quality of the data.