Karthik A

Experience

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  DXC Technology

  Mar 2018 - Jun 2019

  Technical Solutions Rep

  • Applied Excel functions and formulas (VLOOKUP, Pivot Tables, IF statements) to analyze large datasets, improving data processing efficiency by 30%.• Wrote optimized SQL queries to extract, transform, and load (ETL) data from relational databases, ensuring 99% data accuracy and reducing query execution time.• Built interactive dashboards and reports using Power BI and Tableau, automating weekly and monthly reporting, leading to 40% faster business decision-making.

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  Ericsson

  Aug 2019 - Feb 2022

  Associate Engineer

  • Developed Python scripts using Pandas, NumPy, and SQLAlchemy to automate data cleaning and transformation, reducing manual effort by 60%.• Preprocessed and analyzed large datasets using Pandas, NumPy, and Scikit-learn, improving data quality and reducing errors by 25%.• Created interactive visualizations with Seaborn and Matplotlib, uncovering hidden trends in customer behavior, leading to 15% improved targeting in marketing campaigns.

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  Tata Consultancy Services

  Mar 2022 - Aug 2023

  System Engineer

  • Identified key features and engineered new variables using feature selection techniques (SHAP, PCA), improving model performance by 20%.• Designed and implemented machine learning models using Scikit-learn, TensorFlow, and XGBoost, increasing predictive accuracy by 18% for business-critical decisions.• Collaborated with cross-functional teams (marketing, finance, operations) to develop data-driven solutions, leading to a 25% increase in process efficiency.