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Boxed OnlineGary Kellett · Architect · CTO · AI, home

Case study

A 5.5-week refactor, 89% done in a morning

A whole-repository audit and refactor plan for a personal finance app, executed by agents the same morning.

KashPots (my own product)Personal finance
QuotedDelivered
Estimated 5.5 weeks, delivered in 4 hours
Quoted versus deliveredRefactor plan and branch commits, 7 September 2026

The problem

A growing codebase had collected inconsistencies that slowed every new feature.

How I approached it

  1. An audit produced a 64-task plan, estimated at 5.5 engineer-weeks
  2. Agents executed the plan in parallel lanes, with the test suite as the safety net

What was built

  • 57 of 64 refactor tasks
  • A test suite repaired to 607 of 607 passing

Stack

  • Angular
  • .NET 8
  • SQL Server
  • Azure Container Apps

Outcomes

  • Faster feature delivery afterwards
  • No regressions: every test green

Next step

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