The designer you work with largely determines the fate of a digital product. Choosing the right UI/UX design agency directly affects the return of your budget to the project. So what should you choose based on?
The first thing you should look at is the portfolio; but look at the problems that are solved, not the 'beautiful-looking screens'. A good designer can tell you what he does in each project. The variety of sectors (mobile application, e-commerce, SaaS, corporate web) shows that the designer can adapt to different problems.
The second criterion is the process. A professional designer does not start the job by choosing color directly in Figma; it first clarifies the target, user, and scope. If the discovery can clearly describe the wireframe, UI, and prototype stages, you are on the right track.
The third is communication. Design is a long-term collaboration; the speed of return to messages, the revision approach and transparency are almost more important than the result. Pricing the fourth: the cheapest offer often costs the most. Ask what the price covers (screen count, revision, file delivery, developer documentation).
A suitable designer seeks to understand product goals, users and technical constraints before committing to deliverables. Clarify their role in portfolio projects and the files they will hand over.