I build every product following UX processes, UI principles, and prototyping for testing. Each product may have a different process depending on available resources, stakeholder requirements, and user needs.
I use the Bootstrap framework and enhance it with a custom stylesheet based on the SASS preprocessor. The design is then structured according to the UI Design System.
This is my first career in design. I have been working in this role for many years. My design fundamentals are Contrast, Balance, Composition, and Concept.