UI and UX design: a guide for pros
What customers ask, how to win the job, and what to put on your profile.
Offering ui and ux design
You design user experiences and interfaces for apps and sites, so clients judge you on clarity, test results and handoff quality. Research and testing are what separate a design that looks good from one that works.
What customers ask
- Will users understand it?
- How do you test the design?
- What do I get at the end?
- Can my developer build it from your files?
- How long will the design take?
How to win the job
- On the first call, ask the product, the users, the goal and what is not working now
- Set the research and testing plan in writing before you start
- Build the flows first, then the screens, and test the flows early
- Show the client the test results and the changes you made because of them
- Deliver the screens with states, notes and the design system pieces the developer needs
- Offer a walk through of the handoff with the developer
What to put on your profile
- Case studies with the problem, the research, the changes and the result
- The tools and research methods you use
- Your testing process in plain words
- Your contract terms for files and assets
Follow-up that helps the customer
- Offer a review of the product after a few months of use
- Suggest testing a new feature before it is built
- Send a note on updating the design system as the product grows
Licenses and permits
UI and UX design is usually not licensed. Check state and local rules for business registration and contract terms, and confirm that any fonts, icons or images used are licensed for the client.
Questions
How do I handle a client who wants the design approved without testing?
Explain the risk, offer a small test, and write the client's decision in the scope.
What do I do when the developer changes the design during the build?
Review the change with the developer and the client, and update the design files so they match what was built.
Pro reviewers
Pros who offer ui and ux design remotely can improve this guide, like Wikipedia. We check every edit before it goes live. Every approved edit is credited in the edit history and on the pro's profile.
Edit history
- Oct 29, 2026: Drafted by infinibell to our content guidelines.
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