VBA automation that produces monthly QA reports for a major client by processing hundreds of source files with complex transformations. Rolling 3-month, 6-month, and yearly aggregations.
Stack
VBA · Excel
Status
Production
Impact
Multi-language
Scope
Client Delivery
The problem
What it replaced.
Monthly QA reports for a major client required processing hundreds of files across different Excel workbooks with extensive transformations. Required senior leadership verification.
before · the manual waymanual
›time 2-6 hours/month
›accuracy Required verification
›process Manual
The work this took off the team’s plate.
The approach
How it works.
Mapped exact process and created VBA script. Store source files, run script, get monthly QA report in single click. 100% accuracy eliminated verification step.
What it does
+Multi-file processing
+Rolling aggregations
+Client-ready output
+100% accuracy
How a run flows
Before / after
Time per month
Proven, not trusted
Verified before it ships.
The rules that produce these numbers are written as tests and run on every change — and every run, success or failure, writes to the record.
vitest run
✓ output matches the verified reference, every run