Tongai Zinaka



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.

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


Or Send Me a Message

Have a question or a project in mind? Fill out the form and I'll get back to you as soon as possible.