Available for opportunities

Tongai Zinaka

I'm a data analyst with a passion for transforming complex data into actionable business intelligence — from cleaning and structuring raw data to building insightful dashboards that drive strategic decision-making.

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Who I am

About Me

My passion lies in bridging the gap between raw data and strategic business decisions. I am a detail-oriented Data Analyst with a strong foundation in the complete data lifecycle, from cleaning and modeling to creating intuitive Power BI dashboards. I thrive on uncovering the hidden stories within data to help organizations solve complex problems and achieve their goals.

Data Modeling & SQL

Designing robust Star Schemas and writing efficient SQL queries to structure and retrieve data for analysis.

ETL & Data Cleaning

Utilizing Power Query to perform critical data cleaning, transformation, and quality assurance for reliable reporting.

BI & Visualization

Developing interactive and insightful dashboards in Power BI with complex DAX measures to track KPIs.

Advanced Excel

Leveraging advanced functions, Pivot Tables, and data validation to support ad-hoc analysis and reporting.

LMS Analytics
LMS Engagement Patterns
Sample Performance Dashboard
Product Performance Review
Preorder Performance
Executive Financial Summary
Monthly Financial Deep Dive
Account Deep Dive
Some of my work

Project Showcase: BI & LMS Analytics

As the BI Analyst on a four-person team, I developed a Power BI solution to analyze Learning Management System (LMS) data, focusing on compliance, user engagement, and performance outcomes for a community housing group. The visuals here showcase a range of my dashboard design capabilities.

Technologies: Power BI, DAX, ETL
Skills: Dashboard Design, Data Storytelling, Team Collaboration

View Project on GitHub

Want to see a live product?

Zinaka Analytics is a free ledger app I built and shipped for small businesses — installable on Web, iOS, and Android.

Explore Zinaka Analytics