The skills and qualifications necessary to be a successful UI UX designer are constantly evolving, but there are a few that are essential. Firstly, a UI UX designer must have a strong understanding of both user interface and user experience design. They must be able to create designs that are both user-friendly and aesthetically pleasing. Secondly, they must have strong problem-solving skills and be able to think outside the box to come up with innovative solutions to design challenges. Thirdly, they must be excellent communicators, both written and verbal, as they will often be required to present their designs to clients and team members. Finally, they must be proficient in using design software such as Adobe Photoshop and Sketch.

While not essential, it can also be helpful for a UI UX designer to have a background in web development, as this can give them a better understanding of how their designs will be implemented. Additionally, having experience working in a team environment is also beneficial, as UI UX design is often a collaborative process.