Power Bi Data Analyst

Marlon M. Westby

Phone: 310-***-**** Email: *********@*****.*** LinkedIn Profile

Professional Summary

Analytical and detail-oriented Data Analyst with over 15 years of experience leveraging data to drive business outcomes in the telecommunications and technology sectors. Proven track record of transforming large, complex datasets into strategic insights using tools like SQL, Snowflake, Power BI, and Python. Skilled in data visualization, predictive modeling, A/B testing, and automation. Strong collaborator with the ability to communicate technical results to non-technical stakeholders and executive leadership to influence key business decisions.

Core Competencies

●Data Analytics: SQL, Snowflake, Teradata, Oracle, Ad Hoc Reporting

●Data Visualization: Power BI, Tableau, Dashboard Development, Data Storytelling

●Programming & Tools: Python, Databricks, SAS Enterprise, SQL Developer

●Statistical Methods: A/B Testing, Regression, Forecasting, Predictive Modeling, Segmentation

●Business Intelligence: Product & Marketing Analytics, KPI Development, Campaign Optimization

●Finance & Operations: Budgeting, Cost Analysis, GAAP Compliance, Financial Forecasting

●Office Tools: Excel (Advanced), Word, PowerPoint, Access, Visio

Professional Experience

AT&T – El Segundo, CA

Senior Data and Financial Systems Analyst

2006 – Present

●Built and maintained Power BI dashboards and automated reporting tools to track product performance, customer engagement, and conversion metrics.

●Wrote and optimized complex SQL queries across Snowflake, Teradata, and Oracle databases to provide business-critical insights.

●Performed in-depth marketing and campaign performance analysis to guide budget decisions and improve ROI.

●Collaborated with cross-functional teams and executive leadership to deliver data-driven reports supporting strategic business initiatives.

●Applied predictive analytics and segmentation models to enhance credit scoring systems and fraud detection processes.

●Analyzed unstructured data sources such as call transcripts to uncover behavioral patterns and support retention strategies.

●Streamlined month-end close reporting processes and ensured compliance with internal audit standards.

●Spearheaded automation projects to improve reporting efficiency and reduce time to insight.

Comcast Cable – El Segundo, CA

Cable Service Auditor

2005 – 2006

●Conducted field audits to identify unauthorized service usage and improve compliance.

●Documented inspections and contributed to legal enforcement efforts to recover lost revenue.

Staples – Los Angeles, CA

Technology Sales Specialist

2004 – 2009

●Consistently exceeded sales goals by delivering customized technology solutions to customers.

●Provided guidance on computing devices, peripherals, and network equipment to support business and personal needs.

Education and Certifications

●CompTIA A+ Certification – Southern California Regional Occupational Center

●Certificate in Medical Billing – California State University, Dominguez Hills

●Completed Associate Degree Coursework – El Camino College

●High School Diploma – Fremont High School

Key Achievements

●Designed real-time Power BI dashboards used in executive business reviews, enhancing strategic decision-making.

●Contributed to the development of credit scoring models that improved approval accuracy and reduced financial risk.

●Delivered high-impact data insights that led to optimized pricing strategies and improved customer product adoption.

●Recognized for producing ad hoc analyses that directly supported C-suite initiatives and business transformation efforts.

Technical Proficiency

SQL, Snowflake, Power BI, Python, Tableau, Teradata, Oracle Cloud, PCMCS, SmartView, Databricks

Contact this candidate