Thania GutiérrezSenior Product Designer
Open to work

T-Mobile · Post-support experience · 2025–26

Case Details

One shared view of case progress, so customers don’t call back to ask.

Role
Senior product designer, discovery to implementation
Timeline
2025 – 2026
Partners
Product, engineering, support operations
Platform
Customer web, authenticated

Work under NDA. Visuals are recreations; details are available in conversation.

1 view
shared by customers and support teams
Repeats
fewer repeat contacts: the goal it was built for
HTML
screen share prototype built with Claude

The problem

After the call, customers were left guessing.

Once a support contact ended, customers couldn’t see what happened next, so they contacted support again.

The decision

Honest status beats optimistic status.

A vague “in progress” is easy to build and invites another call.

I chose
Statuses that say what is happening and what comes next
I gave up
Generic system statuses
Why
If customers can see progress, they don’t have to ask for it

AI in the process

Prototyping in code with Claude.

For screen share, I built a clickable HTML prototype with Claude to test the login and authentication flow before engineering.

Reflection

Close the loop for the customer.

Prototype in code when behavior matters more than screens, and use AI to get there faster.