CASE STUDY / 04•Operational analytics•2022

Turn Around Time

Lead Time Monitoring System

A lead-time monitoring system that turns process milestones into a clear, actionable picture of where work is accumulating.

PHPLaravelSQL optimizationFigma

27%

shorter average lead time

9

critical milestones tracked

3x

faster root-cause review

SYSTEM PREVIEW / 04
ops.dio.systems/turn-around-time

01 / The Problem

Operational friction before the fix

Teams knew their turnaround target but could not isolate which stage created the variance. Review meetings became opinion-led and retrospective.

02 / The Solution

Clear boundaries & status visibility

I designed milestone-level tracking with variance context, giving owners a way to move from 'we missed' to 'this stage needs attention today'.

Key Operational Highlights

  • Modeled event timestamps for honest stage-level comparisons.
  • Made filters and drilldowns serve a weekly operations ritual.
  • Optimized query paths for a high-volume historical dataset.

03 / Code & System Architecture

How a business operates and how software responds.

The interesting part is rarely the syntax alone. It is the contract between the domain model, the UI, and the people who maintain the system.

File Tree Architecture

src/
domain/
readiness.ts
policies.ts
application/
overview-query.ts
ui/
OverviewScreen.tsx
Representative snippetPHP
return TurnaroundEvent::query()
  ->selectRaw('stage, AVG(duration_minutes) as average')
  ->whereBetween('created_at', [$from, $to])
  ->groupBy('stage')
  ->orderByDesc('average')
  ->get();

The detail is intentional: readable boundaries make reliable collaboration possible.