Chibuzor Ezeamaku Case Study
Data APIs · Client Project

Business Intelligence APIs

A suite of secure, performant APIs that expose client data for analytics — engineered for data integrity and client-data safety from the first endpoint, and shipped with ready-to-use Power BI templates and DAX queries.

Discuss this work → ← All work Private · Client project
What it is

A set of well-designed APIs that surface client business data for downstream analytics and reporting. The endpoints are secure and performant — built so the data can be consumed confidently, without compromising integrity or exposing more than intended.

The work didn’t stop at the API boundary. It shipped with sample Power BI templates and DAX queries so consumers could pull and model the data correctly from day one — closing the gap between “the endpoint exists” and “the dashboard works.”

Built for a client, so specifics stay private — what follows is the shape of the system and the engineering behind it.

What makes it interesting

Secure by design

Data integrity and client-data safety were first-class concerns from the first endpoint — scoped access and careful data exposure, not an afterthought bolted on later.

Built for BI loads

Endpoints and queries were shaped for the aggregate-heavy, large-read patterns analytics actually generates, so reporting stays fast under real-world use.

Power BI-ready

Sample Power BI templates ship alongside the APIs, giving consumers a working starting point instead of a blank canvas and a schema to reverse-engineer.

Correct DAX out of the box

Provided DAX queries model the data the right way, steering consumers away from the subtle measure-and-relationship mistakes that quietly corrupt dashboards.

Engineering focus
  • Security first: access scoped and data exposed deliberately, protecting client data at every endpoint.
  • Performance: efficient queries and response shapes tuned for analytical, report-driven access.
  • A consistent surface: predictable, well-designed endpoints meant to be consumed, not fought.
  • The last mile: Power BI templates and DAX shipped with the APIs so downstream teams succeed immediately.
Tech & approach
API.NETWell-designed, secure, performant services.
StyleRESTConsistent, predictable endpoints.
DataSQL ServerTuned for analytical, aggregate-heavy reads.
BI layerPower BI + DAXSample templates and DAX queries shipped alongside.
PostureSecurity-firstData integrity and client-data safety by design.