Open to opportunities

Michael Effiom

@meffiom

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Results-oriented Data Visualization Leader with 9+ years of experience.

United States

Message

What I'm looking for

I am seeking a role that offers opportunities for innovation, collaboration, and impactful data-driven decision-making.

I am a results-oriented Data Visualization Leader with over 9 years of experience in transforming fragmented datasets into actionable insights. My expertise lies in building scalable Business Intelligence systems and optimizing reporting workflows, particularly in the healthcare, manufacturing, and automotive industries. I have a proven track record of delivering executive-level insights that drive strategic decision-making.

In my current role as a Senior Data Visualization Engineer at UnitedHealthcare, I lead the design and deployment of advanced dashboards using Tableau and ThoughtSpot, integrating complex data sources to enable unified analytics. My previous experiences include optimizing Power BI dashboards at NSI Industries and leading architectural strategies at Toyota Motors North America, where I successfully migrated over 100 dashboards to Power BI, standardizing reporting across business units.

My technical skills encompass a wide range of tools and technologies, including SQL, Python, and various BI platforms. I am passionate about leveraging data to enhance organizational performance and am committed to maintaining high data quality standards in all my projects.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Visualization Engineer

Current

UnitedHealthcare

Aug 2024 - Present (10 months)

Led the design and deployment of advanced Tableau and ThoughtSpot dashboards, providing real-time visibility into member engagement, cost trends, and operational KPIs. Integrated healthcare claims, financial, and membership data using Snowflake, SQL, and Python, enabling unified analytics across the enterprise.

Tableau ThoughtSpot Snowflake SQL Python Power Automate HIPAA

Lead Power BI Developer

NSI Industries

Feb 2024 - Aug 2024 (6 months)

Led end-to-end development and optimization of Power BI dashboards supporting manufacturing, supply chain, and operations teams. Created scalable, performance-optimized data models using DAX and Power Query, improving report load times by 30%.

Power BI DAX Power Query Data Modeling Supply Chain Analytics

BI Solutions Architect

Toyota Motors North America

Apr 2022 - Feb 2024 (1 year 10 months)

Led the architectural strategy to migrate over 100 dashboards from Tableau and Looker to Power BI, standardizing reporting across all North American business units. Designed scalable semantic models and dataflows using Power BI and DAX, reducing dashboard redundancy and improving performance.

Power BI DAX Tableau Looker Data Governance

Senior BI Developer

Altium

Mar 2019 - Apr 2022 (3 years 1 month)

Led development of enterprise Tableau and ThoughtSpot dashboards for global business units, increasing data adoption across Sales, Product, and Finance teams. Designed data models and SQL views to support visual analytics across CRM, product usage, and financial data.

Tableau ThoughtSpot SQL Snowflake Databricks Data Governance CRM

Junior BI Developer

DXC Technology

Feb 2017 - Mar 2019 (2 years 1 month)

Developed SQL queries and Power BI dashboards for Medicare/Medicaid reporting based on the FISS database. Transformed healthcare claims data into structured datasets using Snowflake and Alteryx.