Key takeaways
- Define the job-to-be-done before wireframes
- Every critical screen needs five states, not one happy path
- Prototype decisions that block engineering before high-fidelity polish
Projects slip when design and engineering optimize for different finish lines. Design chases visual polish while engineering waits on answers about empty states, permissions, and error recovery. The fix is not more meetings - it is sequencing UX work so the risky decisions land first.
Start with the job, not the screen
Write one sentence for what the user is trying to accomplish and what success looks like. If you cannot describe the job without naming UI elements, you are still guessing. Flows become obvious when the outcome is clear.
- Job: complete checkout without re-entering saved address
- Job: dispatch a trip without exposing admin-only data
- Job: create an event and control who can see it
“Wireframes are cheap. Rebuilding the wrong flow is expensive.”
Specify states, not just screens
- 01
Happy path
The default success journey - but only after you know it is the right journey.
- 02
Loading and empty
What users see while data fetches or when there is nothing yet - these are real screens, not afterthoughts.
- 03
Error and denied
Failed payments, offline sync, missing permissions - design them or engineers will improvise under pressure.
5
States to spec per critical screen
1
Shared source of truth for flows
30m
Walkthrough that prevents days of rework
Make design part of the critical path
When UX is treated as a prelude to “real work,” schedules break. Treat flow decisions like API contracts: version them, review them with engineering, and do not start heavy build until the risky paths are agreed. That is how UI/UX design keeps velocity instead of stealing it.
