Data Analyst Power Bi

GAYATHRI NARAYANAN TORONTO, ON

Contact: ***************@*****.***, +1-437-***-****

Professional Summary

Detail-oriented Data Analyst with expertise in transforming complex data into actionable insights. Proven track record in data collection, cleaning, analysis, and visualization across industries like Life Science, Technology, Retail. Adept at using data to drive business strategies, solve problems, and optimize processes. Proficient in Excel, SQL, Power BI, Python, and Tableau, with excellent communication and presentation skills. Recognized for process optimization and cross-functional collaboration. Skills:

● Technical Skills: Proficient in SQL, Power BI, Tableau, Python (Pandas, Numpy, Matplotlib, Scikit-learn), Excel (Pivot chart, pivot table, VBA, Vlookup), IBM Cognos, Visual Studio Code, Trello, JIRA, Google Collab, Google sheets, Google slides, Microoft Excel Office, GIT.

● Data Analysis: Data cleaning, data manipulation, exploratory data analysis, data visualization, and dashboarding.

● Business Intelligence: Experience in creating KPI dashboards, trend analysis, and strategic reporting.

● Communication: Strong presentation and reporting skills, translating data insights into actionable recommendations.

● Problem-Solving: Skilled in identifying data patterns, resolving data issues, and optimizing data processes.

● Collaboration: Experienced in working cross-functionally with business and technical teams using Agile methodologies

Professional Experience

Data Analyst, Npower Canada (Volunteer) Dec 2024 – Apr 2025 Toronto, Canada

● Conducted comprehensive analysis of 50K+ customer transaction records, identifying financial risk patterns and optimizing processing efficiency by 20%.

● Leveraged SQL for data extraction, transformation, and analysis, providing data-driven insights to support strategic decision-making.

● Performed exploratory data analysis (EDA) and developed advanced visualizations using Power BI and Excel for stakeholder reporting.

Product Analyst (Data), Cognizant Technology Solutions Dec 2021 – Mar 2024 Chennai, India

● Led data analysis initiatives on a life science data to identify patients trends and optimize retention strategies, enhancing reporting efficiency by 25%

● Architected and maintained dynamic Power BI dashboards, presenting KPIs and performance metrics to senior stakeholders

● Designed, implemented, and analyzed A/B tests, ensuring statistical validity and actionable insights.

● Performed statistical techniques when encountered inconsistent entries across different patient sub groups.

● Collected data from clinical trials, including patient responses to therapies, adverse events, and survival rates, compared outcomes across different patient subgroups (e.g., based on age, cancer stage).

● Created survival curves to illustrate patient outcomes over time and designed dashboards to track key clinical trial metrics.

● Leveraged SQL for data extraction, transformation, and analysis, providing data-driven insights to support strategic decision-making.

● Collaborated with cross-functional teams – Data Scientists, Clinicians, Stakeholder and Management

● Communicated findings to stakeholders to support clinical trial design and interpretation.

● Recognized for leading high-priority tasks and process validation, ensuring consistent performance improvements.

Device Associate, Amazon Development Center Pvt Ltd Jun 2020 – Dec 2021 Chennai, India

● Designed and implemented a comprehensive test plan for a new software release, leading to a 30% reduction in software defects and a 20% increase in customer satisfaction.

● Conducted regression testing, web application testing, performance testing, and cross-platform testing on GAYATHRI NARAYANAN TORONTO, ON

Contact: ***************@*****.***, +1-437-***-**** Windows and Mac to ensure build quality.

● Tested connectivity components, including Wi-Fi, Bluetooth troubleshooting, and audio/video functionality in meetings.

● Gained extensive experience in API projects, including regression, manual, and automation testing.

● Performed testing on AWS Management Console and Single Sign-On (SSO) systems.

● Awarded Best Device Associate in Quality for exceptional performance and quality standards. Digital Associate, Amazon Development Center Pvt Ltd Aug 2018 – Apr 2020 Chennai, India

● Conducted high-quality data annotation (image and video) for machine learning projects, ensuring data accuracy.

● Experienced in data Annotation – Image & video.

● Awarded Worked collaboratively with multiple set of stakeholders- Data team, Analytical resources to deliver on project deliverables and tasks.

Education & Certifications

IT Related Certification

IBM Data Analyst Apr 2025

Coursera

Microsoft Azure Fundamentals Feb 2025

Microsoft

Cloud computing & big data Dec 2024

Seneca Polytechnic College

Education

Bachelor of Engineering May 2018

Anna University

Project

Machine Learning Seneca College Oct 2024 – Jan 2025

● Developed and evaluated predictive models for diverse datasets to solve real-world problems.

● Regression Model: Trained and evaluated a Linear Regression model on a [mention hypothetical dataset type, e.g., "housing price dataset" or "sales data"] using NumPy, Pandas, and Matplotlib for data preprocessing, feature engineering, and performance visualization. Analyzed model coefficients and residuals to understand key drivers and model fit.

● Classification Model: Implemented and evaluated a classification model for MNIST handwritten digit recognition using Python libraries like NumPy, Pandas, and Matplotlib. Performed data scaling, feature extraction, and assessed model performance using metrics such as accuracy, precision, and recall.

● Leveraged Scikit-learn for model implementation, cross-validation, and hyperparameter tuning to optimize predictive accuracy and generalization.

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