Power BI Developer - BI & Analytics Specialist

DAVID HAYNES

Torrance, CA • 310-***-**** • *******@*******.*** • linkedin.com/in/david-l-haynes

Power BI Developer

Power BI Developer / Business Intelligence Developer with 5+ years of experience delivering operational, financial, and business performance insights that drive revenue growth and cost optimization. Experienced in building scalable reporting solutions using Power BI, SQL, and Power Query, including data modeling, ETL automation, and dashboard development. Skilled at translating complex data into clear, actionable insights for cross-functional stakeholders and leadership teams. WORK EXPERIENCE

LA County of Parks and Recreation • Alhambra, CA • 01/2025 - 01/2026 Power BI Developer • Contractor

• Collaborated with IT to design and build a SQL/Azure data warehouse, creating optimized views and functions to support scalable reporting and analytics with Power BI.

• Partnered with cross-functional stakeholders to gather business requirements and design automated reporting solutions using Power BI and Power Query, reducing manual reporting dependency.

• Streamlined HR tracking of part-time employee benefit eligibility across a 3-month period, improving reporting completeness from 70% to 100% compliance.

• Developed staffing-hours dashboards by project, contributing to a 10% increase in budget funding sources through improved visibility and justification.

• Automated ad-hoc budget reports in collaboration with finance teams, achieving 100% reporting accuracy and faster turnaround times.

• Created geospatial heat maps linking enrollee home locations to park sites, resulting in a 15% increase in program attendance. Bright Event Rentals • Torrance, CA • 01/2022 - 04/2024 Power BI Developer • Full-time

• Drove data-driven decision-making with stakeholders to improve asset ROI, reduce overtime, increase bookings, optimize driver performance, with Power BI for reporting and Power Query to automate cleaning and ETL and implement SQL data warehouse with a 3rd party company.

• Initiated conversations with Alert staff to understand codes in Cyberquery to replicate 20+ reports used by staff to create queries and views in SQL to transition reports to Power BI and Excel, which allowed a 0% loss in reporting frequency.

• Automated monthly Excel commission report to clean and merge 5 data sources, compressing a 2-month manual process into one day, eliminating 30 overtime hours per month and reducing incorrect commission payouts by 12%.

• Designed KPI dashboards to monitor seasonal spending patterns, contributing to a 15% increase in first-time customer engagements.

• Built inventory-threshold reporting using Power Query to direct queries for real-time results for event planners, reducing event cancellations due to unavailable assets by 12%.

• Implemented row level security allowing only managers within their location to view their rental assets.

• Assigned 10+ DAX measures for various reports to ensure timely and accurate stakeholder's adhoc request. Business Intelligence Developer (Consultant):Emerald, AIG, The Capital Group, SoCal Gas, SoCal Edison, Hyundai •

Los Angeles, CA • 02/2018 - 10/2021

BI / Reporting Developer • Contractor

• Automated complex Excel workflows using Power Query, significantly reducing manual processing time for reporting teams.

• Delivered analytics and reporting solutions across healthcare, utilities, finance, and manufacturing sectors.

• Developed recruitment performance reports for healthcare staffing teams, increasing nurse recruitment by 12%.

• Created performance tables that improved call center efficiency by reducing SLA outliers by 20%.

• Supported stakeholders with weekly dashboards tracking vendor spend and contract completion, improving payment accuracy and investment retention.

• Designed correlation analysis reports linking service desk staffing levels to call volume, reducing excess staffing by 80 hours per week.

Toyota • TORRANCE CA • 07/2011 - 12/2017

Budget Analyst • Full-time

EDUCATION

B.S. Degree in Business Administration in Option in Finance CALIFORNIA STATE UNIVERSITY LOS ANGELES

CERTIFICATIONS

Post Graduate Program in Data Analytics

PURDUE UNIVERSITY

SKILLS

Applications/Coding

• Power-Query(M-Code)

• Power Bi(DAX)

• SQL

• Alert(Cyberquery)

• Advanced Excel

• Python (Pandas)

• Azure

• Power Automate

BI Tools

• Power BI

• Tableau

• Microstrategies

Analytics/Developer Tools

• Statistical Analysis

• KPI Development

• Star Schema Data

Modeling

• ETL

Soft Skills

• Able to meet project

deadlines

• Prioritize automation and

time-saving procedures

• Able to bridge the

communication needs

between IT and business

units

Contact this candidate