Case study 03 · 2021–23
Customer Data
Platform.
Validating the API responses, data pipelines and records that help customer information stay consistent.
- Organisation
- NatWest Group · Accenture
- Role
- Application Development Associate
- Focus
- API, ETL & database testing
The work
Reliable data, end to end.
Customer data moves through many systems. My role was to validate that API responses, database records and pipeline outputs remained accurate and consistent throughout the journey.
What I did
- Executed REST API testing with Postman and validated API responses against MongoDB records.
- Performed ETL and database validation across SQL and MongoDB, comparing source and target data to identify discrepancies.
- Supported onboarding for more than 100 employees through access setup and environment configuration.
How I worked
Looking for the detail that does not match.
Data testing required tracing information carefully across requests, responses and databases. The work combined technical validation with a practical focus: identifying discrepancies early so the information people rely on remains trustworthy.