Ask HN: Should you have a full-time designer in a 3-4 person startup?

I'm a first time founder with a backend engineering background. We are looking to improve our UI/UX since everyone on the team has an infrastructure background. The options can think of are: 1) Hire a full time designer who only produces sketches. I think this is a bit too expensive for us at this stage (3-4 person startup) but I'm open to dissenting opinions. 2) Hire a UI/UX developer who can do design + code in our react stack. 3) Outsource design sketches to a contracting firm, and have a separate frontend developer. Which approach has worked best in your experiences? I prefer (2) but have no idea how hard it is to hire someone who can do both design + front end code. Open to anything right now and a little desperate, a clean UI is our main blocker to launch.